X-Men: First Class

In 1944, at the Auschwitz concentration camp, Nazi officer Klaus Schmidt witnesses a young Erik Lehnsherr bending a metal gate with his mind upon being separated from his parents. Schmidt brings Lehnsherr into his office and tells him to move a coin on his desk. When Lehnsherr cannot do it, Schmidt kills his mother. Distraught, Lehnsherr's magnetic power manifests, destroying the room. Meanwhile, at a mansion in Westchester County, New York, young telepath Charles Xavier meets Raven, a scaly blue-skinned shapeshifter. He invites her to live with him as his sister.

In 1962, Lehnsherr tracks Schmidt while Xavier earns his doctorate from the University of Oxford. In Las Vegas, CIA officer Moira MacTaggert follows US Army Colonel Hendry into the Hellfire Club, where Hendry meets with Schmidt (now called Sebastian Shaw), mutant telepath Emma Frost, cyclone-producing Riptide, and teleporter Azazel. Threatened by Shaw and teleported to the Joint War Room, Hendry advocates deploying nuclear missiles in Turkey. Shaw, an energy-absorbing mutant whose powers have kept him young, later kills Hendry.

MacTaggert, seeking Xavier's advice on mutation, takes him and Raven to the CIA, where they convince Director McCone that mutants exist and that Shaw is a threat. Another CIA officer sponsors the mutants and invites them to the secret "Division X" facility. MacTaggert and Xavier find Shaw as Lehnsherr attacks him, and Xavier rescues Lehnsherr from drowning before Shaw escapes. Xavier brings Lehnsherr to Division X, where they meet Hank McCoy, a mutant scientist with prehensile feet. Xavier uses McCoy's mutant-locating device, Cerebro, to seek and recruit other mutants; Angel Salvadore, Armando Muñoz, Alex Summers, and Sean Cassidy.

Xavier, Lehnsherr, and MacTaggert lead a CIA mission to the Soviet Union to capture Frost and discover Shaw intends to start World War III, triggering mutant ascendency. Azazel, Riptide, and Shaw attack Division X, killing everyone but the mutants whom Shaw invites to join him. Angel accepts, but when Alex and Armando retaliate, Shaw kills Armando. In Moscow, Shaw compels the generals to have the USSR install missiles in Cuba. Wearing a helmet that blocks telepathy, Shaw follows the Soviet fleet in a submarine to ensure the missiles break a U.S. blockade. In the meantime, Xavier takes the remaining recruits back to his mansion, where they focus on harnessing their abilities. McCoy believes Raven's DNA may provide a "cure" for their appearance and manages to get a cure ready, but Raven, after being persuaded by Lehnsherr, decides she does not want to hide her identity and refuses the cure. McCoy uses the cure on himself, but it backfires, giving him blue fur and a leonine appearance.

With McCoy piloting, the mutants and MacTaggert fly to the blockade line. Xavier uses telepathy to make a Soviet sailor destroy the missile ship, while Lehnsherr uses his magnetic powers to lift Shaw's submarine onto land. Lehnsherr grabs Shaw's helmet in battle, allowing Xavier to immobilize him. However, Lehnsherr reveals that he shares Shaw's exclusivist view of mutants but wants revenge for his mother's death. Lehnsherr pushes a Nazi coin through Shaw's brain, killing him. Forced to witness this, Xavier endures Shaw's death.

Both fleets fire at the mutants in fear, but Lehnsherr intercepts the barrage. As he redirects their fire, MacTaggert shoots him, but Lehnsherr deflects them, with one bullet hitting Xavier's spine when he tries to intervene. Distracted by Xavier's injury, Lehnsherr lets the artillery fall into the ocean. Xavier and Lehnsherr part ways over their differing views on mutants and humans, and Lehnsherr leaves with Angel, Azazel, Riptide, and Raven. Later, a wheelchair-bound Xavier returns to the mansion with his mutants to open a school. MacTaggert promises to keep Xavier's location secret, but he wipes her memories to ensure it. Meanwhile, Lehnsherr, now Magneto, and the Hellfire Club free Frost from prison.

==Cast==

File:James-mcavoy-michael-fassbender-x-men-junket-interview-300x300.jpg and James McAvoy at a press junket|alt=Michael Fassbender and James McAvoy sit in front of the "X" logo for Xavier's school.]]

• James McAvoy as Charles Xavier: The mutant leader and founder of the X-Men. He is a close friend of Erik Lehnsherr until their differing views of mutantkind's place in humanity create a schism between them. McAvoy was Vaughn's top choice for Xavier, and, after being cast, auditioned with every actor considered for Magneto to test the duo's chemistry.{{cite web |last=Leader |first=Michael |date=May 25, 2011 |title=Matthew Vaughn interview: X-Men: First Class, Thor, Hollywood, James Bond, Take That and more |url=https://www.denofgeek.com/movies/james-bond/17507/matthew-vaughn-interview-x-men-first-class-thor-hollywood-james-bond-take-that-and-more |url-status=live |archive-url=https://web.archive.org/web/20130828043153/http://www.denofgeek.com/movies/james-bond/17507/matthew-vaughn-interview-x-men-first-class-thor-hollywood-james-bond-take-that-and-more |archive-date=August 28, 2013 |access-date=June 10, 2012 |publisher=Den of Geek (Dennis Publishing) |location=UK}} McAvoy said he did not read comic books as a child, but added that he was a fan of the X-Men animated series from age ten. While he describes the older Charles Xavier as "a monk ... a selfless, egoless almost sexless force for the betterment of humanity and mortality", he says that the younger Xavier is a very different person: "It's quite fun because the complete opposite of that is an ego-fueled, sexed up self-serving dude. And not going too far with it, but he's definitely got an ego and he's definitely got a sex drive as well."{{cite web |last=Tilly |first=Chris |date=March 30, 2011 |title=X-Men: First Class: James McAvoy Interview |url=https://www.ign.com/articles/2011/03/30/x-men-first-class-james-mcavoy-interview?page=1 |publisher=IGN |access-date=May 13, 2011|archive-date=April 21, 2020|archive-url= https://web.archive.org/web/20200421113916/https://www.ign.com/articles/2011/03/30/x-men-first-class-james-mcavoy-interview?page=1|url-status=live }} McAvoy admitted to feeling similarities between Xavier/Magneto and Martin Luther King Jr./Malcolm X, stating that the film was "sort of like meeting them at a point where they are still finding out who they are and you are still seeing some of the events that shaped them."{{cite web | url=https://www.ign.com/articles/2011/03/30/x-men-first-class-james-mcavoy-interview?page=2 | title=X-Men: First Class: James McAvoy Interview page 2 | publisher=IGN| date=March 30, 2011 | access-date=June 5, 2012 | last=Tilly | first=Chris | archive-date=November 7, 2012 | archive-url=https://web.archive.org/web/20121107163244/http://www.ign.com/articles/2011/03/30/x-men-first-class-james-mcavoy-interview?page=2 | url-status=live }} McAvoy avoided doing any callbacks to Patrick Stewart's performance as Xavier as Vaughn told him and Michael Fassbender to only take the allusion to Xavier and Magneto's old friendship in the other films as inspiration. Vaughn stated that since he considered Professor X "a bit of a pious, sanctimonious boring character, and he's got too much fucking power", the script would make young Xavier more interesting by "making him more of a rogue" who would become more responsible as his mission of finding more mutants went on.
• Laurence Belcher as young Charles Xavier{{cite web |author=BrentJS |url=http://www.reelz.com/movie-news/7669/laurence-belcher-joins-x-men-first-class-as-young-charles-xavier/ |title=Laurence Belcher Joins X-Men: First Class as Young Charles Xavier |publisher=ReelzChannel |date=September 7, 2010 |access-date=September 11, 2010 |url-status=dead |archive-url=https://web.archive.org/web/20160409223356/http://www.reelz.com/movie-news/7669/laurence-belcher-joins-x-men-first-class-as-young-charles-xavier/ |archive-date=April 9, 2016 |df=mdy-all }}

• Michael Fassbender as Erik Lehnsherr:The onscreen credits spell the character's name as "Lensherr". However, previous X-Men films, the film's official website and [http://marvel.com/universe/Magneto_(Magnus) the Marvel Comics web page for the character] {{Webarchive|url=https://web.archive.org/web/20101217102611/http://marvel.com/universe/Magneto_(Magnus) |date=December 17, 2010 }} spell the name "Lehnsherr". A Nazi hunter and mutant capable of manipulating and generating electromagnetic fields. He becomes Xavier's friend and ally until their philosophical differences create a schism between them. Fassbender had auditioned for an earlier Matthew Vaughn project, and the director had remembered him and sent Fassbender the X-Men script. Though Fassbender knew little of the superhero team, he became interested in the part after reading the script and familiarizing himself with Magneto in the comics. Fassbender, who considered Lehnsherr as a Machiavellian character who is neither good nor evil, watched Ian McKellen's performances to get the flavor of Magneto, but ultimately chose to "paint a new canvas" with the character, "just going my own way and working with whatever is in the comic books and the script."{{cite web |last=Tilly |first=Chris |title=X-Men: First Class – Michael Fassbender Interview |url=http://movies.ign.com/articles/116/1161582p1.html |publisher=IGN |access-date=May 13, 2011 | archive-url= https://web.archive.org/web/20120604185727/http://movies.ign.com/articles/116/1161582p1.html |archive-date= June 4, 2012 | url-status=live}} Looking back at the role in 2023, Fassbender admitted to Vanity Fair that what drew him to the role was the idea of Magneto being an outsider who feels that he doesn't belong, interesting him the prospect of looking justifications for his character's monumental actions, the lengths he would be willing to go and what his motivations were, feeling that at his core, all Magneto needs is "a hug".{{Cite AV media |url=https://www.youtube.com/watch?v=yfc5K9ZM6h0 |author=Vanity Fair |author-link=Vanity Fair (magazine) |title=Michael Fassbender Breaks Down His Career, from 'Inglorious Basterds' to 'X-Men' | Vanity Fair |date=December 12, 2023 |access-date=December 14, 2023 |via=YouTube}} Vaughn said Lehnsherr "is straight up cool; he's Han Solo while Professor X is Obi-Wan Kenobi".{{Cite video|title=Extraordinary Abilities|publisher=20th Century Fox Home Entertainment|location=X-Men: First Class DVD|date=2011}}
• Bill Milner plays young Erik, although archived footage of Brett Morris, who previously played the same character at the same age, was reused for the beginning.
• Kevin Bacon as Sebastian Shaw: A mutant former Nazi scientist and the leader of the Hellfire Club, a secret society bent on taking over the world. He has the power of absorbing and redirecting kinetic and radiated energy. Vaughn first offered the part to Mark Strong, who turned it down.{{Cite web |url=https://www.comingsoon.net/movies/news/1055869-exclusive-mark-strong-was-almost-the-villain-in-x-men-first-class |title=Exclusive: Mark Strong Was Almost the Villain in X-Men: First Class |last=Evry |first=Max |date=3 April 2019 |website=comingsoon.net |access-date=26 November 2024 |quote=}} Producer Lauren Shuler Donner said Bacon was considered for Shaw for being an actor who could convey a villain "with different shades, that's not always clear that he's the bad guy".{{cite video|title="Children of the Atom: Filming X-Men First Class"|type=Featurette|publisher=20th Century Fox Home Entertainment|location=X-Men: First Class Blu-Ray|trans-title=Band of Brothers}} Vaughn added that Bacon "had that bravado that Shaw needed", while stating that the actor was his top choice along with Colin Firth, who would later work with Vaughn on the Kingsman film series. Bacon accepted the role as he was a fan of Vaughn's Kick-Ass (2010), and liked both the character of Shaw and the script, which he described as "a fresh look at the franchise, but also the comic book movies in general".{{cite news| url = http://blog.moviefone.com/2011/01/19/interview-kevin-bacon-x-men-first-class/ | title = Kevin Bacon on 'X-Men: First Class' and Whether He'll See the 'Footloose' Remake|first=Sharon|last=Knolle | publisher=MovieFone (AOL) | date = January 19, 2011| access-date =December 21, 2011 | archive-url = https://web.archive.org/web/20120604212807/http://blog.moviefone.com/2011/01/19/interview-kevin-bacon-x-men-first-class/ | archive-date = June 4, 2012 | url-status =live}} The actor considered that Shaw was a sociopath to whom "the morality of the world did not apply", with producer Simon Kinberg adding that Bacon portrayed him as "somebody, who in his mind, is the hero of the movie". Bacon also said that "aside from the kind of evil side, I portrayed him as kind of a Hugh Hefner type". Vaughn discarded Shaw's look from the comics as he felt he would "look like an Austin Powers villain".{{cite web| work=HitFix | url= http://www.hitfix.com/blogs/motion-captured/posts/interview-director-matthew-vaughn-on-making-x-men-first-class-feel-fresh |title= Interview: Director Matthew Vaughn on making 'X-Men First Class' feel fresh | first=Drew |last=McWeeny |date= May 24, 2011 | access-date= May 14, 2012 | archive-date = June 29, 2013|archive-url= https://archive.today/20130629020958/http://www.hitfix.com/blogs/motion-captured/posts/interview-director-matthew-vaughn-on-making-x-men-first-class-feel-fresh|url-status=live}}
  • Rose Byrne as Moira MacTaggert: A CIA agent who befriends Xavier and Lehnsherr. Byrne said she was unfamiliar with both the comics and the film series, except for "what a juggernaut of a film it was". The actress was cast late into production,{{cite web|url=http://www.instyle.co.uk/news/exclusive-interview-with-rose-byrne-20-05-11|title=Exclusive Interview with Rose Byrne!|work=InStyle UK|date=May 20, 2011 |access-date=November 3, 2011 | archive-url = https://web.archive.org/web/20120604193319/http://www.instyle.co.uk/news/exclusive-interview-with-rose-byrne-20-05-11 | archive-date = June 4, 2012 | url-status=live}} which had already begun by the time she was picked for the role. MacTaggert was described by Byrne as "a woman in a man's world, she's very feisty and ambitious—you know, she's got a toughness about her which I liked".{{cite news|url=http://movieline.com/2011/05/13/rose-byrne-on-bridesmaids-and-her-romantic-future-in-the-x-men-first-class-sequels/ |title=Rose Byrne on Bridesmaids, X-Men: First Class Sequels, and the Films That Made Her Career|author=Yamato, Jen|newspaper=Movieline |publisher=Movieline (PMC) |date= May 13, 2011 |access-date=October 1, 2011 | archive-date= May 14, 2012 | archive-url =https://web.archive.org/web/20120514175814/http://movieline.com/2011/05/13/rose-byrne-on-bridesmaids-and-her-romantic-future-in-the-x-men-first-class-sequels/ | url-status =live}}
  • Jennifer Lawrence as Raven / Mystique: A shape-shifting mutant who is Xavier's childhood friend and adoptive sister who joins Lehnsherr's Brotherhood of Mutants and Hank's love interest. After the dramatic Winter's Bone (2010), Lawrence sought First Class to do "something a little lighter".{{cite web |last=Tilly |first=Chris |date=May 11, 2011 |title=X-Men: First Class - Mystique Interview |url=http://movies.ign.com/articles/116/1166813p1.html |publisher=IGN |access-date=December 21, 2011 | archive-url = https://web.archive.org/web/20120801001626/http://movies.ign.com/articles/116/1166813p1.html | archive-date = August 1, 2012 | url-status=live}} Despite having not seen any of the X-Men films, the actress watched them and became a fan, which led her to accept the role as well, as did the prospect of working with Vaughn, McAvoy and Fassbender.{{cite web|url= http://www.mtv.com/news/articles/1664359/jennifer-lawrence-x-men-first-class.jhtml | title='X-Men' Star Jennifer Lawrence Was Intimidated By 'Gorgeous' Rebecca Romijn | first = Eric | last = Ditzian | date=May 20, 2011 | publisher=MTV| access-date = December 25, 2011 | archive-url = https://web.archive.org/web/20110624083602/http://www.mtv.com/news/articles/1664359/jennifer-lawrence-x-men-first-class.jhtml | archive-date= June 24, 2011 | url-status = dead}} Vaughn said Lawrence was picked because "she could pull off the challenging dichotomy that Raven faces as she transforms into Mystique; that vulnerability that shields a powerful inner strength."{{cite news |last=Dehn|first=Georgia |date=May 23, 2011 |title=X-Men: Jennifer Lawrence interview|url=https://www.telegraph.co.uk/culture/film/starsandstories/8526466/X-Men-Jennifer-Lawrence-interview.html|work=The Daily Telegraph | location = UK | access-date=December 21, 2011 | archive-date= June 4, 2012 | archive-url = https://web.archive.org/web/20120604220517/http://www.telegraph.co.uk/culture/film/starsandstories/8526466/X-Men-Jennifer-Lawrence-interview.html | url-status=live }} Lawrence had some reservations about her performance due to Mystique's previous portrayal by Rebecca Romijn, as she considered Romijn to be "the most gorgeous person in the world", and felt their portrayals were very contrasting, feeling hers was "sweet and naive" while Romijn was "sultry and mean". The actress went on a diet and had to work out for two hours daily to keep in shape,{{cite web|url=https://www.hollywoodreporter.com/blogs/heat-vision/jennifer-lawrence-painted-naked-daily-73534|date=January 19, 2011|title=Jennifer Lawrence on Being Painted Naked Daily for 'X-Men: First Class'|work=The Hollywood Reporter | access-date=December 25, 2011 | archive-date=July 3, 2011 | url-status = live | archive-url = https://web.archive.org/web/20110703200950/http://www.hollywoodreporter.com/blogs/heat-vision/jennifer-lawrence-painted-naked-daily-73534}} and for Mystique's blue form, Lawrence had to undergo an eight-hour make-up process similar to that of Romijn in the other films. The first day with make-up caused blisters to appear on Lawrence's upper body.
  • Morgan Lily as young Raven (10 years): with the actress wearing a slip-on bodysuit and facial appliances which only took one hour and a half to apply, as subjecting a child actor to the extensive make-up was impractical.
  • Rebecca Romijn as older Raven: a brief uncredited cameo, which Vaughn added as an in-joke—the script has Raven "becom[ing] Brigitte Bardot or Marilyn Monroe, like an older sex icon of those times".{{cite web|url=https://www.slashfilm.com/film-interview-part-2-matthew-vaughn-talks-major-xmen-class-spoiler/|title=Film Interview Part 2: Matthew Vaughn Talks Major 'X-Men: First Class' Spoiler|publisher=/Film|date=June 6, 2011|first=Germain|last=Lussier|access-date=December 25, 2011 | archive-date= June 5, 2012 | archive-url = https://web.archive.org/web/20120605012135/http://www.slashfilm.com/film-interview-part-2-matthew-vaughn-talks-major-xmen-class-spoiler/ | url-status =live}}
  • Oliver Platt as Man In Black Suit: A CIA agent and head of Division X, a government agency working with the X-Men.{{cite news | last=Fleming | first=Mike | title=Oliver Platt Joins 'X-Men: First Class' | website=Deadline | date=August 16, 2010 | url=https://deadline.com/2010/08/oliver-platt-joins-x-men-first-class-61592/ | access-date=August 16, 2010 | archive-date=August 18, 2010 | archive-url=https://web.archive.org/web/20100818032642/http://www.deadline.com/2010/08/oliver-platt-joins-x-men-first-class/ | url-status=live }} Vaughn had considered his friend Dexter Fletcher for the part, but the studio felt the cast had too many British actors, and Fletcher himself declined, to direct Wild Bill (2011).{{cite web|url=http://metro.co.uk/2012/03/29/dexter-fletcher-i-turned-down-a-part-in-x-men-first-class-to-direct-wild-bill-369824/|title=Dexter Fletcher: I turned down a part in X-Men: First Class in order to direct Wild Bill|work=Metro|date=29 March 2012|access-date=15 February 2014|author=Williams, Andrew|archive-date=October 26, 2013|archive-url=https://web.archive.org/web/20131026110826/http://metro.co.uk/2012/03/29/dexter-fletcher-i-turned-down-a-part-in-x-men-first-class-to-direct-wild-bill-369824/|url-status=live}}
  • Álex González as Janos Quested / Riptide: a silent mutant member of the Hellfire Club, with the ability to create powerful whirlwinds from his hands and body. First Class marks the first English-language film for González, who auditioned while taking English classes in London. He enjoyed playing a villain as most of his film roles in Spain were for "good guys", and compared Riptide's respectable and polite personality, which can suddenly be dropped to perform fierce attacks, to a hurricane; in a translation of a Portuguese-language interview, he is quoted as saying, "When I see a hurricane from far, it is calm. The only thing I can see is a kind of tube. But from inside, up close, it is really dangerous."{{cite web|url=http://entretenimento.r7.com/cinema/noticias/ator-de-novo-x-men-fala-sobre-vilao-do-filme-20110601.html?question=0|title=Ator de novo X-Men fala sobre vilão do filme|date=June 1, 2011|publisher=R7.com|language=pt|access-date=December 21, 2011|archive-date=June 11, 2012|archive-url=https://web.archive.org/web/20120611094624/http://entretenimento.r7.com/cinema/noticias/ator-de-novo-x-men-fala-sobre-vilao-do-filme-20110601.html?question=0|url-status=live}}
  • Jason Flemyng as Azazel: A mutant who has the ability to teleport, and is also a member of the Hellfire Club. Flemyng, who had previously been considered for Beast in The Last Stand, said he did not want more make-up-heavy roles after playing Calibos in Clash of the Titans, but made an exception for Azazel as he liked working with Vaughn. Due to the Cold War setting, Flemyng tried to imply that Azazel is Russian to partly explain his pleasure in killing CIA agents.{{cite web|url=http://blogs.coventrytelegraph.net/thegeekfiles/2011/05/jason-flemyng-on-x-men-first-c.html|title=Jason Flemyng on X-Men: First Class and nearly playing Beast in X-Men: The Last Stand|first=David|last=Bentley|publisher=The Geek Files|work=Coventry Telegraph|location=Coventry, UK|date=May 23, 2011|access-date=October 29, 2011|url-status=dead|archive-url=https://web.archive.org/web/20130704164240/http://blogs.coventrytelegraph.net/thegeekfiles/2011/05/jason-flemyng-on-x-men-first-c.html|archive-date=July 4, 2013|df=mdy-all}} The actor spent eight weeks with fight training, particularly with swords, and had to undergo a four-hour make-up process, which like Mystique was designed by Spectral Motion—but did not include Azazel's tail, which was computer-generated. Shuler Donner considered that the problems with the shade of red on Azazel's skin—"some looked like the Devil, some like a man wearing red paint"—was overcome by adding scars that made him more human, eyes brighter than Flemyng's own, and "a black mane of hair that seemed to tie everything in".
  • Zoë Kravitz as Angel Salvadore: a mutant with dragonfly wings which are tattooed on her body and who possesses acidic saliva. The make-up team took four hours to apply Angel's wing tattoo on Kravitz, and the visual effects team had to erase the tattoo in case the scene required Angel with the computer-generated wings. To depict flight, Kravitz stood on elevated platforms and was dangled on wires, at times from a helicopter to allow for varied camera angles.
  • January Jones as Emma Frost: An extremely strong mutant telepath who can also change her entire body into hard diamond form, which grants her superhuman strength, stamina, psionic immunity, and durability, at the cost of using her telepathic abilities. She is a member of the Hellfire Club. Prior to Jones' casting, Alice Eve was the subject of what Variety called "widespread Internet reports" that Eve "was set to play Emma Frost, although no deal was in place."{{cite news | last=McClintock | first=Pamela | title=January Jones joins 'X-Men' |work=Variety | date=August 17, 2010 | url=https://variety.com/2010/film/markets-festivals/january-jones-joins-x-men-1118023030/ | access-date=August 18, 2010 | archive-url=https://web.archive.org/web/20110805141818/http://www.variety.com/article/VR1118023030 | archive-date= August 5, 2011 | url-status=live}} Jones accepted the role to get something different from her job in the TV series Mad Men. Upon discovering that, like the show, First Class is set in the 1960s, the actress considered, "[Frost]'s so, so far from Betty and from Mad Men, and it takes place in that time but it doesn't feel like a period movie." The actress described the revealing costumes of the character as "insane," saying, "She's got quite the bod, which is very intimidating". The actress stated that she did only a limited exercise routine to keep in shape, as "I'm a petite person, so I didn't want to go into a strict workout and eating regime."{{cite web|url=http://herocomplex.latimes.com/2011/01/04/x-men-first-class-january-jones-copes-with-sexed-up-insane-costumes/|title='X-Men: First Class': January Jones copes with sexed-up, 'insane' costumes|first=Rebecca|last=Keegan|date=January 5, 2011|access-date=October 29, 2011|work=Los Angeles Times | archive-url = https://web.archive.org/web/20110606143509/http://herocomplex.latimes.com/2011/01/04/x-men-first-class-january-jones-copes-with-sexed-up-insane-costumes/ | archive-date=June 6, 2011 | url-status=live}}
  • Nicholas Hoult as Hank / Beast: A genius scientist who has mutant abilities similar to those of the great apes. He attempts to cure himself of what he believes to be physically debilitating aspects of his mutation only to be transformed into a frightening-looking blue-furred entity based on a werewolf with leonine attributes. Despite his new appearance, he is kind and caring at heart. Broadway actor Benjamin Walker was previously cast as Beast, but eventually turned down the role to star in the Broadway musical Bloody Bloody Andrew Jackson.{{cite news | title = Benjamin Walker to Star in Broadway Transfer of Bloody Bloody Andrew Jackson | publisher=Broadway.com | date = July 15, 2010 | url = http://www.broadway.com/buzz/153013/benjamin-walker-to-star-in-broadway-transfer-of-bloody-bloody-andrew-jackson/| access-date=October 6, 2010 | archive-date= June 4, 2012 | archive-url = https://web.archive.org/web/20120604222258/http://www.broadway.com/buzz/153013/benjamin-walker-to-star-in-broadway-transfer-of-bloody-bloody-andrew-jackson/ | url-status =live}} Hoult was chosen for being "gentle with a capability of being fierce", and admitted to being both an X-Men fan and enthusiastic on both returning to the action genre after 2010's Clash of the Titans (2010) and working with the film's cast.{{cite web|url=https://variety.com/2010/film/news/nicholas-hoult-from-boy-to-man-1118025956/|title=Nicholas Hoult: From 'Boy' to 'Man'|work=Variety|date=2010-10-22|access-date=2014-02-15|archive-date=November 6, 2018|archive-url=https://web.archive.org/web/20181106213231/https://variety.com/2010/film/news/nicholas-hoult-from-boy-to-man-1118025956/|url-status=live}} The actor had to use makeup that took four hours to apply when Hank becomes the Beast, which include a mask, contact lenses, a furry muscle suit and fake teeth. As Vaughn wanted Beast to look more feral than the version Kelsey Grammer played in X-Men: The Last Stand (2006), the redesign went through various tests, which tried to make Beast not resemble any particular animal but still look like Hoult, as well as with a furry body,{{cite video|title="Children of the Atom: Filming X-Men First Class"|type=Featurette|publisher=20th Century Fox Home Entertainment|location=X-Men: First Class Blu-Ray|trans-title=Transformation}} which makeup artist Alec Gillis of Amalgamated Dynamics (ADI) likened to "something akin to a wolf's pelt on his face, his arms—everywhere". The suits employed actual dyed fur from fox pelts.
  • Caleb Landry Jones as Cassidy / Banshee: an American mutant capable of emitting incredibly strong ultrasonic screams, sonic blasts, sonic bursts, and sonic waves used in various ways including as a means of flight. Jones auditioned without knowing what X-Men character he was up for, saying he auditioned because it was a superhero that fit his biotype: "I've got red hair and freckles, I'm not gonna be Batman, Robin or Spider-Man". The actor also stated that the script defined the character more than the comics, as Banshee went through various reinventions in print. Given Banshee gets involved with MacTaggert in the comics, Jones also tried to "look at her just a little bit differently, you know, when I can."{{cite web |last=Tilly |first=Chris |date=May 13, 2011 |title=X-Men: First Class - Banshee Interview |url=http://movies.ign.com/articles/116/1167782p1.html |publisher=IGN |access-date=December 21, 2011 |archive-date=December 17, 2011 |archive-url=https://web.archive.org/web/20111217032351/http://movies.ign.com/articles/116/1167782p1.html |url-status=live }} As Jones suffers from acrophobia, using the rig that was to depict Banshee's flight required much preparation time with the stunt team.
  • Edi Gathegi as Darwin / Armando Muñoz: A mutant with the ability of "reactive evolution." Gathegi became interested in a role in the X-Men films after seeing X2 (2003), and had previously auditioned for Agent Zero in X-Men Origins: Wolverine (2009). He read for Banshee while auditioning for First Class, and only learned he was playing Darwin a few days prior to the shoot. Gathegi worked out and entered an eating regime to get in shape, and also researched the comics about his character.{{cite web|url=http://www.blackfilm.com/read/2011/05/x-men-first-class-exclusive-edi-gathegi-interview/|title=X-Men: First Class / Exclusive Edi Gathegi|date=May 27, 2011 | publisher=Blackfilm.com | first = Wilson | last = Morales | access-date=December 12, 2011 | archive-date= June 4, 2012 | archive-url = https://web.archive.org/web/20120604222727/http://www.blackfilm.com/read/2011/05/x-men-first-class-exclusive-edi-gathegi-interview/ | url-status = live }} All of Darwin's transformations—getting gills, turning his skin into concrete—were done through computer graphics, with a computer-generated version of Gathegi that could seamlessly blend in and out of the human form.
  • Lucas Till as Alex Summers / Havok: A mutant who has the ability to absorb energy and discharge it as blasts. The producers told Till his audition served for both Havok and Beast, and the actor replied that despite his lifelong dream of playing a superhero, "I know you'll kill me, but if I get Beast, I'm not in the movie. I'm not going through that makeup {{Sic|everyd|ay}}."{{cite news | last=Eggertsen | first=Chris | title=Lucas Till talks playing Havok in "X-Men: First Class" | work=HitFix | date=September 7, 2011 | url=http://www.hitfix.com/articles/lucas-till-reveals-hopes-for-havok-in-potential-x-men-firstclass-sequel | access-date=August 16, 2010 | archive-date=November 11, 2021 | archive-url=https://web.archive.org/web/20211111004305/https://uproxx.com/entertainment/ | url-status=live }}

  Additionally, co-stars include Glenn Morshower as Colonel Hendry, a US Army officer coerced by the Hellfire Club; Matt Craven as CIA Director McCone; Rade Šerbedžija as Russian General. Annabelle Wallis appears as Amy, a young woman with heterochromia; Don Creech as William Stryker, father of Major William Stryker (a character who appears in X2, X-Men Origins: Wolverine, X-Men: Days of Future Past, and X-Men: Apocalypse);{{cite web|url=http://splashpage.mtv.com/2011/06/03/x-men-first-class-easter-eggs/|title='X-Men: First Class' Easter Eggs: Five Things To Look For This Weekend!|author=Marshall, Rick|publisher=MTV|date=June 3, 2011|access-date=June 26, 2011|archive-date=June 23, 2011|archive-url=https://web.archive.org/web/20110623225812/http://splashpage.mtv.com/2011/06/03/x-men-first-class-easter-eggs|url-status=dead}} Michael Ironside; Ray Wise;{{cite news | last = Goldman | first = Eric | title = Wise Casting for X-Men: First Class | publisher=IGN | date = November 30, 2010 | url = https://www.ign.com/articles/2010/11/30/wise-casting-for-x-men-first-class | access-date = December 1, 2010 | archive-date = November 7, 2012 | archive-url = https://web.archive.org/web/20121107163347/http://www.ign.com/articles/2010/11/30/wise-casting-for-x-men-first-class | url-status = live }} James Remar; Brendan Fehr; Demetri Goritsas; Ludger Pistor; Aleksander Krupa; Tony Curran; and Sasha Pieterse also portrayed small roles in this film. Beth Goddard appears as Mrs. Xavier. Hugh Jackman reprises his role as Wolverine in an uncredited cameo in a bar, telling Xavier and Lehnsherr to "go fuck yourself" after they approach him for recruitment. Jackman said he accepted the offer to appear because "it sounded perfect to me", particularly for Wolverine being the only character with a swear word.{{cite web| url=http://news.moviefone.com/2011/09/26/hugh-jackman-x-men-first-class-cameo-interview/| title=Hugh Jackman on How His 'X-Men: First Class' Cameo Almost Didn't Happen| first=Mike| last=Ryan| publisher=Moviefone| date=September 26, 2011| access-date=December 25, 2011| archive-date=July 27, 2013| archive-url=https://web.archive.org/web/20130727131606/http://news.moviefone.com/2011/09/26/hugh-jackman-x-men-first-class-cameo-interview| url-status=dead}} X-Men creator Stan Lee, who appeared in the first and third movie and regularly made cameos in other Marvel-based movies, explained that he was unable to participate in First Class because "they shot it too far away".{{cite web |url=https://www.latimes.com/opinion/opinion-la/la-oe-morrison-stan-lee-061111-column.html |title=Patt Morrison Asks: Comics genius Stan Lee |last=Morrison |first=Patt |work=Los Angeles Times |date=2011-06-11 |access-date=2014-02-15 |archive-date=December 1, 2020 |archive-url=https://web.archive.org/web/20201201033453/https://www.latimes.com/opinion/opinion-la/la-oe-morrison-stan-lee-061111-column.html |url-status=live }}

During the production of X2 (2003), producer Lauren Shuler Donner had discussed the idea of a film focusing on the young X-Men with the crew, which was met with approval; the concept was revived during the production of X-Men: The Last Stand (2006). Zak Penn, one of The Last Stand{{'}}s writers, was hired to write and direct this X-Men spin-off,{{cite news | author = Douglas, Edward | url = http://www.superherohype.com/features/90651-zak-penn-on-his-potential-x-men-spin-off | title = Zak Penn on His Potential X-Men Spin-off | publisher = SuperheroHype.com | date = April 11, 2006 | access-date = December 18, 2010 | archive-date = November 24, 2015 | archive-url = https://web.archive.org/web/20151124204648/http://www.superherohype.com/features/90651-zak-penn-on-his-potential-x-men-spin-off | url-status = live }} but this idea later fell through.{{cite news | author=Davis, Erik | title=Zak Penn Talks X-Men Spin-Off, Incredible Hulk Casting | publisher="Cinematical" (column) Moviefone (AOL) | date=May 1, 2007 | url=http://blog.moviefone.com/2007/05/01/zak-penn-talks-x-men-spin-off-incredible-hulk-casting-with-cine/ | access-date=February 9, 2008 | archive-date=June 4, 2012 | archive-url=https://web.archive.org/web/20120604214156/http://blog.moviefone.com/2007/05/01/zak-penn-talks-x-men-spin-off-incredible-hulk-casting-with-cine/ | url-status=dead }} Penn explained in 2007 that "the original idea was to have me do a young X-Men spin-off, a spin-off of the young X-Men characters. But someone came up with a pretty interesting idea ... it was this guy who worked with me named Mike Chamoy, he worked a lot with me on X3. He came up with how to do a young X-Men movie which is not what you'd expect."

Around the same time, in December 2004, 20th Century Fox hired screenwriter Sheldon Turner to draft a spin-off X-Men film, and he chose to write Magneto, pitching it as "The Pianist (2002) meets X-Men".{{cite news | author=Michael Fleming | author2=Claude Brodesser | url=https://variety.com/2004/film/markets-festivals/fox-pages-turner-to-pen-magneto-spinoff-pic-1117914863/ | title=Fox pages Turner to pen Magneto spinoff pic | publisher=Variety | date=December 12, 2004 | access-date=April 7, 2007 | archive-date=November 7, 2006 | archive-url=https://web.archive.org/web/20061107140707/http://www.variety.com/article/VR1117914863.html?categoryid=1238&cs=1 | url-status=live }}{{Cite web |last=Fleming |first=Mike Jr. |date=2010-08-18 |title=January Jones Set For 'X-Men: First Class' |url=https://deadline.com/2010/08/january-jones-heads-x-men-first-class-mutant-roster-61898/ |access-date=2023-03-19 |website=Deadline|language=en-US}} According to Turner, the script he penned was set from 1939 to 1955,{{cite news | author=Michelle Kung | url=https://www.ew.com/ew/article/0,,1008429,00.html | title=Checking in with ... 'Magneto' | publisher=Entertainment Weekly | date=December 20, 2004 | access-date=April 7, 2007 | archive-date=December 21, 2007 | archive-url=https://web.archive.org/web/20071221182037/https://www.ew.com/ew/article/0,,1008429,00.html | url-status=dead }} following Magneto trying to survive in Auschwitz. He meets Xavier, a young soldier, during the liberation of the camp. He hunts down the Nazi war criminals who tortured him, and this lust for vengeance turns him and Xavier into enemies. In April 2007, David S. Goyer was hired to direct. The film would take place mostly in flashbacks with actors in their twenties, with Ian McKellen's older Magneto as a framing device,{{cite news | author=Michael Fleming | url=https://variety.com/2007/film/markets-festivals/fox-marvel-move-on-magneto-2-1117963871/ | title=Fox, Marvel move on 'garrett' | publisher=Variety | date=April 26, 2007 | access-date=April 26, 2007 | archive-date=April 29, 2007 | archive-url=https://web.archive.org/web/20070429013042/http://www.variety.com/article/VR1117963871.html?categoryid=13&cs=1 | url-status=live }} and some usage of the computer-generated facelift applied to him in the prologue of The Last Stand,{{cite news | author=Stax | url=http://movies.ign.com/articles/704/704451p1.html | title=McKellen Talks Magneto Movie | publisher=IGN | date=May 2, 2006 | access-date=April 6, 2007 | archive-date=May 14, 2007 | archive-url=https://web.archive.org/web/20070514205748/http://movies.ign.com/articles/704/704451p1.html | url-status=live }} McKellen reiterated his hope to open and close the film.{{cite news|title=McKellen keen for X-Men spin-off|work=BBC News Online|date=July 11, 2008|url=http://news.bbc.co.uk/2/hi/entertainment/7501846.stm|access-date=July 11, 2008|first=Genevieve|last=Hassan|archive-date=October 1, 2008|archive-url=https://web.archive.org/web/20081001155154/http://news.bbc.co.uk/2/hi/entertainment/7501846.stm|url-status=live}} The Magneto film was planned to shoot in Australia for a 2009 release,{{cite news | author = Shawn Adler | title = 'X-Men' Spin-Off 'Magneto' To Reveal Anti-Hero Origin Story | publisher = MTV | date = May 15, 2007 | url = http://moviesblog.mtv.com/2007/05/15/x-men-spin-off-magneto-to-reveal-anti-hero-origin-story/ | access-date = May 15, 2007 | archive-date = October 21, 2007 | archive-url = https://web.archive.org/web/20071021202359/http://moviesblog.mtv.com/2007/05/15/x-men-spin-off-magneto-to-reveal-anti-hero-origin-story/ | url-status = dead }}{{cite news | title = More superhero movies head for Australia | publisher = NineMSN | date = July 24, 2007 | url = http://news.ninemsn.com.au/article.aspx?id=280586 | access-date = August 4, 2007|archive-url=https://web.archive.org/web/20070615195514/http://www.news.ninemsn.com.au/article.aspx?id=280586|archive-date=June 15, 2007 }} but factors including the 2007–08 Writers Guild of America strike caused the producers to cancel plans for the movie.{{cite news|url=https://www.animatedtimes.com/cancelled-superhero-movies/|title=Cancelled Superhero Movies: 9 Doomed Projects Fans Still Crave For|first=Bibhu Prasad|last=Panda| date=August 26, 2020|access-date=January 13, 2020|publisher=AnimatedTimes.com|archive-date=September 24, 2020| archive-url=https://web.archive.org/web/20200924214746/https://www.animatedtimes.com/cancelled-superhero-movies/| url-status=live}}

As producer Simon Kinberg read the comic series X-Men: First Class (2006–2009), he suggested studio 20th Century Fox to adapt it. Kinberg, however, did not want to follow the comic too much, as he felt "it was not fresh enough in terms of storytelling", considering them too similar to Twilight (2005) and John Hughes movies, and also because the producers wanted an adaptation that would introduce new characters.{{cite video|title="Children of the Atom: Filming X-Men First Class"|type=Featurette|publisher=20th Century Fox Home Entertainment|location=X-Men: First Class Blu-Ray|trans-title=Second Genesis}} Both Kinberg and Shuler Donner said that they wanted characters with visuals and powers that had not been seen and that worked well as an ensemble, even if they did not work together in the comics. Shuler Donner later said that the original idea was to green-light First Class depending on the success of X-Men Origins: Magneto.{{cite news | last = Spelling | first = Ian | url = http://blastr.com/2009/04/magneto-prequel-still-pos.php | title = Magneto prequel still possible, depending on Wolverine | publisher = Sci Fi Wire / blastr | date = April 22, 2009 | access-date = July 10, 2009 | archive-date = August 14, 2012 | archive-url = https://web.archive.org/web/20120814225137/http://blastr.com/2009/04/magneto-prequel-still-pos.php | url-status = dead }} That project was seeking approval to film in Washington, D.C.,{{cite news | author = Jeffrey Ressner | title = Klieg Lights, Big City | publisher=Politico | date = June 4, 2008 | url = http://www.politico.com/news/stories/0608/10807.html | access-date = June 9, 2008 | archive-date = June 7, 2008 | archive-url = https://web.archive.org/web/20080607044555/http://www.politico.com/news/stories/0608/10807.html | url-status = live }} and by December 2008, Goyer said filming would begin if X-Men Origins: Wolverine was successful. The story was moved forward to 1962 and involves Xavier and Magneto battling a villain.{{cite news|author=Steve Weintraub|title=David Goyer reveals Magneto and Invisible Man Info|work=Collider|date=December 11, 2008|url=https://www.collider.com/entertainment/interviews/article.asp/aid/10120/tcid/1|access-date=December 15, 2008|archive-date=December 14, 2008|archive-url=https://web.archive.org/web/20081214224147/http://www.collider.com/entertainment/interviews/article.asp/aid/10120/tcid/1|url-status=live}}

In 2008, Josh Schwartz was hired to write the screenplay, while declining the possibility of directing X-Men: First Class.{{cite news | author = Siegel, Tatiana and Marc Graser | url = https://variety.com/2008/film/news/fox-josh-schwartz-mutate-x-men-1117996099/ | title = Fox, Josh Schwartz mutate 'X-Men' | work=Variety | date = November 18, 2008 | access-date = November 19, 2008 | archive-date = August 10, 2019 | archive-url = https://web.archive.org/web/20190810183219/https://variety.com/2008/film/news/fox-josh-schwartz-mutate-x-men-1117996099/ | url-status = live }} Fox later approached Bryan Singer, director of X-Men (2000) and X2, in October 2009.{{cite news | url=https://variety.com/2009/film/news/bryan-singer-to-direct-x-men-first-class-1118012931/ | work=Variety | title=Bryan Singer to direct 'X-Men: First Class' | first=Michael | last=Fleming | date=December 17, 2009 | access-date=June 5, 2012 | archive-date=November 8, 2012 | archive-url=https://web.archive.org/web/20121108104936/http://www.variety.com/article/VR1118012931 | url-status=live }} Schwartz later said that Singer dismissed his work as "he wanted to make a very different kind of movie",{{cite web |url=http://splashpage.mtv.com/2010/03/02/former-x-men-first-class-writer-josh-schwartz-explains-his-exit/ |title=Former 'X-Men: First Class' Writer Josh Schwartz Explains His Exit |publisher=MTV |date=March 2, 2010 |first=Rick |last=Marshall |access-date=January 31, 2012 |archive-date=October 15, 2011 |archive-url=https://web.archive.org/web/20111015091804/http://splashpage.mtv.com/2010/03/02/former-x-men-first-class-writer-josh-schwartz-explains-his-exit/ |url-status=dead }} with the director instead writing his own treatment which was then developed into a new script by Jamie Moss.

In 2009, Ian McKellen confirmed that he would not be reprising his role as Magneto in the Origins movie citing his age,{{cite news |title=Ian McKellen won't make X-Men return |work=Lifestyle from Yahoo |date=October 15, 2009 |url=http://splashpage.mtv.com/2009/10/13/ian-mckellen-assumes-he-wont-be-involved-in-x-men-origins-magneto |access-date=October 11, 2009 |archive-date=October 16, 2009 |archive-url=https://web.archive.org/web/20091016025155/http://splashpage.mtv.com/2009/10/13/ian-mckellen-assumes-he-wont-be-involved-in-x-men-origins-magneto |url-status=dead }} and Shuler Donner stated that the movie might never be made,{{cite news|title='X-Men Origins: Magneto' Producer Says Film Might Never Be Made|work=Lifestyle from Yahoo|date=October 16, 2009|url=http://splashpage.mtv.com/2009/10/16/x-men-origins-magneto-producer-says-film-might-never-be-made|access-date=October 16, 2009|archive-date=October 19, 2009|archive-url=https://web.archive.org/web/20091019082731/http://splashpage.mtv.com/2009/10/16/x-men-origins-magneto-producer-says-film-might-never-be-made/|url-status=dead}} stating it was "at the back of the queue" in the studio's priorities.{{cite web|url=https://www.empireonline.com/features/future-of-x-men-franchise/4.asp|title=The Future the X-Men Franchise: Magneto|work=Empire|last=De Semlyen|first=Nick|date=October 16, 2009|access-date=October 23, 2010|archive-date=October 20, 2012|archive-url=https://web.archive.org/web/20121020183642/http://www.empireonline.com/features/future-of-x-men-franchise/4.asp|url-status=dead}} Both Donner and Bryan Singer have stated that Magneto would not be produced as the plot of X-Men: First Class "superseded" the story of the planned film.{{cite news | author = Kit, Borys | url = http://reporter.blogs.com/heat_vision_development/2009/12/heat-vision-qa-bryan-singer-on-x-men-first-class-avatar-and-more.html | title = Heat Vision Q&A: Bryan Singer on 'X-Men: First Class,' 'Avatar' and more | work=Heat Vision | date = December 21, 2009 | access-date = April 26, 2010 | archive-date = September 14, 2018 | archive-url = https://web.archive.org/web/20180914094307/http://reporter.blogs.com/heat_vision_development/2009/12/heat-vision-qa-bryan-singer-on-x-men-first-class-avatar-and-more.html | url-status = live }}{{cite web|url=http://www.craveonline.com/film/interviews/135386-lauren-shuler-donner-on-x-men-first-class|title=Lauren Shuler Donner on X-Men: First Class|date=August 23, 2010|publisher=CraveOnline|first=Fred|last=Topel|access-date=September 2, 2010|archive-date=October 19, 2014|archive-url=https://web.archive.org/web/20141019112757/http://www.craveonline.com/film/interviews/135386-lauren-shuler-donner-on-x-men-first-class|url-status=live}} Singer denied using Sheldon Turner's script for Magneto as inspiration to write his draft of First Class,{{cite web|url=https://www.hollywoodreporter.com/heat-vision/bryan-singer-why-i-challenged-183781|title=Bryan Singer: Why I Challenged 'X-Men: First Class' Writing Credits (Exclusive)|work=The Hollywood Reporter|date=April 29, 2011|first=Borys|last=Kit|access-date=May 6, 2012|archive-date=May 1, 2012|archive-url=https://web.archive.org/web/20120501064447/http://www.hollywoodreporter.com/heat-vision/bryan-singer-why-i-challenged-183781|url-status=live}} but the Writers Guild of America arbitration still credited Turner for the film's story, while Moss and Schwartz's collaborations ended up uncredited.{{cite web|url=https://www.hollywoodreporter.com/heat-vision/complex-x-men-first-class-182356|title=Complex 'X-Men: First Class' Screenplay Credit Dispute Resolved (Exclusive)|work=The Hollywood Reporter|date=April 27, 2011|last1=Fernandez|first1=Jay A.|last2=Kit|first2=Borys|access-date=May 6, 2012|archive-date=April 26, 2012|archive-url=https://web.archive.org/web/20120426091742/http://www.hollywoodreporter.com/heat-vision/complex-x-men-first-class-182356|url-status=live}}{{cite news | last = Kit | first = Boris | title = 'X-Men: First Class' Writing Credits Appeal Denied |work=The Hollywood Reporter | date = April 29, 2011 | url = https://www.hollywoodreporter.com/heat-vision/x-men-first-class-writing-183768 | access-date=May 11, 2011| archive-date= June 7, 2011| archive-url= https://web.archive.org/web/20110607235609/http://www.hollywoodreporter.com/heat-vision/x-men-first-class-writing-183768 | url-status=live}} Singer set the film in a period where Xavier and Magneto were in their twenties, and seeing that it was during the 1960s, added the Cuban Missile Crisis as a backdrop, considering it would be interesting to "discuss this contemporary concept in a historical context". Shuler Donner suggested the Hellfire Club as the villains.

In addition to Moss, Ashley Edward Miller and Zack Stentz were hired to rewrite the script. Miller compared it tonally to Singer's work on the first two X-Men films.{{cite news | author=Pirrello, Phil | url=https://www.ign.com/articles/2010/05/06/inside-x-men-first-class | title=Inside X-Men: First Class | publisher=IGN | date=May 6, 2010 | access-date=December 18, 2010 | archive-date=November 6, 2018 | archive-url=https://web.archive.org/web/20181106202924/https://www.ign.com/articles/2010/05/06/inside-x-men-first-class | url-status=live }} The pair centered the film on Xavier and Magneto's relationship, and wrote the other characters and storylines in terms of "how they fit in the tension between Erik and Charles". Singer dropped out of the director's position in March 2010 due to his commitment to a Jack the Giant Killer (2013) adaptation. He formalized his duties from director to producer.{{cite news | last1=Fleming | first1=Mike | title=Bryan Singer Producing 'X-Men: First Class' | website=Deadline | date=March 26, 2010 | url=https://deadline.com/2010/03/singer-to-producex-men-first-class-29669/ | access-date=July 9, 2010 | archive-date=August 14, 2013 | archive-url=https://web.archive.org/web/20130814082823/http://www.deadline.com/2010/03/singer-to-producex-men-first-class/ | url-status=live }}

The producers listed various possible directors, but at first did not consider Matthew Vaughn because he started working on The Last Stand before backing out. After seeing Vaughn's satirical superhero film Kick-Ass (2010), Kinberg decided to contact Vaughn to see if he would be interested in First Class. When Fox offered Vaughn the "chance to reboot X-Men and put your stamp all over it", he first thought the studio was joking, but accepted after discovering that it was to be set in the 1960s.{{cite web|last=Douglas|first=Edward|title=Exclusive Interview with X-Men: First Class Director Matthew Vaughn|url=http://www.superherohype.com/features/167401-exclusive-interview-with-x-men-first-class-director-matthew-vaughn|publisher=Superhero Hype|access-date=June 5, 2012|date=May 27, 2011|archive-date=February 2, 2015|archive-url=https://web.archive.org/web/20150202034803/http://www.superherohype.com/features/167401-exclusive-interview-with-x-men-first-class-director-matthew-vaughn|url-status=live}} The director stated that First Class would become the opportunity to combine many of his dream projects: "I got my cake and ate it, managed to do an X-Men movie, and a Bond thing, and a Frankenheimer political thriller at the same time". Vaughn signed on as Singer's replacement in May 2010, and Fox subsequently announced a June 3, 2011 release date.{{cite news | author = McClintock, Pamela | url = https://variety.com/2010/film/news/x-men-prequel-to-open-june-3-2011-1118018752/2 | title = 'X-Men' prequel to open June 04, 2011 | work=Variety | date = May 5, 2010 | access-date = December 10, 2010 | archive-date = March 28, 2016 | archive-url = https://web.archive.org/web/20160328073044/http://variety.com/2010/film/news/x-men-prequel-to-open-june-3-2011-1118018752/2/ | url-status = live }} Vaughn also rewrote the script with his screenwriting partner Jane Goldman, adding new characters and changing existing character arcs and dynamics—for instance, the idea of a love triangle between Xavier, Magneto and Moira MacTaggert was cut. The character of Sunspot was also cut, as the director felt that "we didn't have enough time or money" to make the character work. Vaughn and Goldman considered including mentions to the civil rights movement, but ultimately the director felt that "I had enough political subplot in this movie". Vaughn stated that his biggest concern was to both make Erik and Charles' friendship believable given the short timespan of the film, and on how the character of Magneto was built—"Shaw was the villain, but now you're seeing all those elements of Shaw going into Magneto." An action scene that was to have been set in a dream sequence with revolving rooms was scrapped after the release of Inception (2010).{{cite web |url=http://herocomplex.latimes.com/movies/inception-wakeup-call-xmen-first-class-forced-to-jettison-dream-scenes/ |title='Inception' wake-up call – 'X-Men: First Class' director jettisons similar dream-time scenes |date=September 2, 2010 |first=Geoff |last=Boucher |work=Los Angeles Times |access-date=September 2, 2010 |archive-date=December 6, 2013 |archive-url=https://web.archive.org/web/20131206155918/http://herocomplex.latimes.com/movies/inception-wakeup-call-xmen-first-class-forced-to-jettison-dream-scenes/ |url-status=dead }}

Describing his thought process towards the material, Vaughn said he was motivated by "unfinished business" with Marvel, having been previously involved with the production of both X-Men: The Last Stand and Thor (2011). Vaughn declared that he was more enthusiastic about First Class than The Last Stand due to not being constrained by the previous installments, and having the opportunity to "start fresh", while "nodding towards" the successful elements from those films. Vaughn compared First Class to both Batman Begins (2005), which restarted a franchise with an unseen approach,{{cite web|last=Tilly|first=Chris|title=X-Men: First Class Set Visit|url=https://www.ign.com/articles/2011/03/09/x-men-first-class-set-visit|publisher=IGN|date=March 9, 2011|access-date=May 11, 2012|archive-date=October 18, 2012|archive-url=https://web.archive.org/web/20121018201026/http://www.ign.com/articles/2011/03/09/x-men-first-class-set-visit|url-status=live}} and the 2009 Star Trek film, which paid homage to the original source material while taking it in a new direction with a fresh, young cast.{{cite news | last = White | first = Cindy | title = X-Men Following Star Trek's Lead | publisher = IGN | date = August 2, 2010 | url = https://www.ign.com/articles/2010/08/02/x-men-following-star-treks-lead | access-date = August 3, 2010 | archive-date = October 7, 2013 | archive-url = https://web.archive.org/web/20131007063615/http://www.ign.com/articles/2010/08/02/x-men-following-star-treks-lead | url-status = live }} Regarding continuity, Vaughn said his intention was "to make as good a film that could stand on its own two feet regardless of all the other films" and also that could "reboot and start a whole new X-Men franchise".{{cite web|url=https://www.slashfilm.com/film-interview-xmen-class-director-matthew-vaughn/|title=/Film Interview: 'X-Men: First Class' Director Matthew Vaughn|publisher=/Film|date=May 25, 2011|first=Germain|last=Lussier|access-date=December 25, 2011|archive-date=October 26, 2020|archive-url= https://web.archive.org/web/20201026015908/https://www.slashfilm.com/film-interview-xmen-class-director-matthew-vaughn/|url-status=live}} Goldman added the film was kind of an "alternate history" for the X-Men, saying that while rebooting, the writers did not want to go fully "against the canon of the X-Men trilogy", comparing to the various approaches the comic had in over fifty years of publication.{{cite web|url=https://www.empireonline.com/interviews/interview.asp?IID=1283|title=X-Men: First Class Interviews|first=Helen|last=O'Hara|work=Empire|access-date=December 25, 2011|url-status=dead|archive-url=https://web.archive.org/web/20130614124620/http://www.empireonline.com/interviews/interview.asp?IID=1283|archive-date=June 14, 2013}}

The film also resurrects a central concept in the comics, the fact that radiation is one of the causes of genetic mutation in the X-Men fictional universe, and incorporates it into the story line. The concept went unused in previous years because writers in the comics more often attributed the phenomenon of mutation mostly to evolution and natural selection.

File:Englefield House.jpg, which served as the X-Mansion|alt=A mansion surrounded by trees and hedges.]]

Principal photography began on August 31, 2010, in Oxford, England, which included St Aldate's street and some of the University of Oxford's buildings, and lasted for two days.{{cite news | last=Hearn | first=Dan | title=X-Men stars film prequel in city | work=The Oxford Student | date=October 1, 2010 | url=http://www.oxfordmail.co.uk/news/yourtown/oxford/8425499.X_Men_stars_film_prequel_in_city/ | access-date=October 7, 2010 | archive-date=November 11, 2021 | archive-url=https://web.archive.org/web/20211111004310/https://www.oxfordmail.co.uk/news/8425499.x-men-stars-film-prequel-city/ | url-status=live }} Production then moved to Pinewood Studios in Iver,{{cite news | author = Dawtrey, Adam | url = https://variety.com/2010/film/news/snaring-the-big-hollywood-pictures-1118027580/ | title = Snaring the big Hollywood pictures | work=Variety | date = November 27, 2010 | access-date = December 10, 2010 | archive-date = November 7, 2018 | archive-url = https://web.archive.org/web/20181107000750/https://variety.com/2010/film/news/snaring-the-big-hollywood-pictures-1118027580/ | url-status = live }} and to Georgia in October, including Tybee Island, Thunderbolt, and Savannah,{{cite news | author = Conn, Lesley | url = http://savannahnow.com/latest-news/2010-09-09/x-men-may-be-landing-savannah | title = X-Men may be landing in Savannah | work=Savannah Morning News | date = September 9, 2010 | access-date = December 11, 2010 | archive-date = September 17, 2012 | archive-url = https://web.archive.org/web/20120917004733/http://savannahnow.com/latest-news/2010-09-09/x-men-may-be-landing-savannah | url-status = live }} after sites in Louisiana, North Carolina{{cite news | author = Conn, Lesley | url = http://savannahnow.com/news/2010-10-21/x-men-pick-jekyll-island-over-tybee-island | title = X-Men pick Jekyll Island over Tybee Island | work=Savannah Morning News | date = October 20, 2010 | access-date = December 11, 2010 | archive-date = October 24, 2010 | archive-url = https://web.archive.org/web/20101024065001/http://savannahnow.com/news/2010-10-21/x-men-pick-jekyll-island-over-tybee-island | url-status = live }} and West Michigan were considered.{{cite news | title = X-Men: First Class Scouting Locations in Michigan | publisher = SuperheroHype.com | date = June 7, 2010 | url = http://www.superherohype.com/news/102188-x-men-first-class-scouting-locations-in-michigan | access-date = September 10, 2010 | archive-date = September 24, 2015 | archive-url = https://web.archive.org/web/20150924172025/http://www.superherohype.com/news/102188-x-men-first-class-scouting-locations-in-michigan | url-status = live }} Jekyll Island was chosen over Tybee Island after a producer reviewed the locations on Google Earth and thought the water near Jekyll looked bluer. Palm trees were planted into the island's sand so that it would look more like a tropical beach, but the cold weather caused many of the palm trees to become brown or die only days into the shoot, necessitating significant digital color correction from the visual effects team. Additional location shooting took place in Russia. A section of the plot is set in the Argentine coastal city of Villa Gesell, but was filmed in another province of the country with no beach but with mountains instead.{{cite web|url= http://www.clarin.com/espectaculos/cine/Villa-Gesell_0_488951187.html|title= ¿Villa Gesell?|first= Pablo|last= Scholz|date= May 28, 2011|work= Clarín|location= Buenos Aires|language= es|access-date= June 5, 2012|archive-date= October 12, 2012|archive-url= https://web.archive.org/web/20121012002224/http://www.clarin.com/espectaculos/cine/Villa-Gesell_0_488951187.html|url-status= live}}: "A alguien ... se le ocurrió que el villano que interpreta Kevin Bacon en la Segunda Guerra Mundial, se refugiaba en los '60 en la Argentina. 'Villa Gesell', dicen, y en el plano siguiente se lee que están en 'Villa Gesell'. Pero se ve un lago con montañas de fondo. Y la música tiene ritmo español. Y el cantinero dice, 'cabrón'. ¿O será como el París, Texas, de Wenders? Muchachos, paremos la mano. Haber entrado en Google Maps ..." Translation: "Somebody thought that the villain played by Kevin Bacon during WWII takes refuge at 1960s Argentina. 'Villa Gesell', they say, and on the next screen it is read that they are in 'Villa Gesell'. But a lake with mountains in the background can be seen. And the music has a Spanish rhythm. And the barman says, 'cabrón'. Or is it like [Wim] Wenders' Paris, Texas (1984)? Hold on a little, people. If you just checked with Google maps ..." Washington, D.C., the Mojave Desert and Fox's soundstages in Los Angeles also served as locations. The Englefield House in Berkshire served as the X-Mansion, and had its interior decoration adapted to resemble the way the mansion looked in the previous films. Both the submarine and the X-Jet were built on hydraulic sets so that they could be rotated for the vehicles' movements.

Principal photography ended in December, although just half of the climax had actually been filmed because producers realized the originally planned one was not going to work.{{cite web|title="We Were Wrong": Behind Fox's 'Dark Phoenix' Debacle|publisher=The Hollywood Reporter|author=Borys Kit|date=June 10, 2019|url=https://www.hollywoodreporter.com/movies/movie-news/we-were-wrong-behind-dark-phoenix-foxs-dismal-x-men-franchise-finale-plans-1216859|access-date=June 10, 2019|archive-date=June 10, 2019|archive-url=https://web.archive.org/web/20190610142809/https://www.hollywoodreporter.com/amp/heat-vision/we-were-wrong-behind-dark-phoenix-foxs-dismal-x-men-franchise-finale-plans-1216859|url-status=live}} Additional filming, primarily in California at Los Angeles and Long Beach soundstages,{{cite web|url=https://variety.com/2011/film/news/rain-can-t-dampen-production-in-l-a-1118032725/|title=Rain can't dampen production in L.A.|date=February 23, 2011|author=McNary, Dave|work=Variety|access-date=February 15, 2014|archive-date=March 4, 2016|archive-url=https://web.archive.org/web/20160304074926/http://variety.com/2011/film/news/rain-can-t-dampen-production-in-l-a-1118032725/|url-status=live}} continued into April 2011, leaving only three-to-four weeks for post-production before the film's scheduled premiere in June.{{cite web|url=https://www.hollywoodreporter.com/news/fox-exec-at-ves-panel-242957|title=Fox Exec at VES Panel: We Thought James Franco's Character Should Die in 'Apes'|work=The Hollywood Reporter|date=October 2, 2011|access-date=May 6, 2012|first=Carolyn|last=Giardina|archive-date=January 4, 2012|archive-url=https://web.archive.org/web/20120104200336/http://www.hollywoodreporter.com/news/fox-exec-at-ves-panel-242957|url-status=live}} The tight schedule to meet the release date led Vaughn to declare that he had "never worked under such time pressure".{{cite web|url=http://herocomplex.latimes.com/movies/x-menfirst-class-three-exclusive-photos-and-a-report-from-the-stressed-out-set/|title='X-Men:First Class': Three exclusive photos and a report from the stressed-out set|work=Los Angeles Times|author=Boucher, Geoff|date=January 19, 2011|access-date=May 6, 2012|archive-date=June 1, 2013|archive-url=https://web.archive.org/web/20130601204407/http://herocomplex.latimes.com/movies/x-menfirst-class-three-exclusive-photos-and-a-report-from-the-stressed-out-set/|url-status=live}} The film cost approximately $160 million to produce without tax breaks,{{cite web | url=https://www.latimes.com/business/la-xpm-2011-jun-04-la-fi-ct-xmen-20110604-story.html | title=With 'X-Men: First Class' Fox tries a new mutation | work=Los Angeles Times | date=June 4, 2011 | access-date=June 5, 2012 | author=Zeitchik, Steven | archive-date=January 30, 2012 | archive-url=https://web.archive.org/web/20120130160121/http://articles.latimes.com/2011/jun/04/business/la-fi-ct-xmen-20110604 | url-status=live }} with the eventual cost around $140 million.{{Cite news |last=McClintock |first=Pamela |title=Box Office Preview: 'X-Men: First Class' Expected to Bump 'Hangover II' From Top Spot |date=June 2, 2011 |work=The Hollywood Reporter |url=https://www.hollywoodreporter.com/news/box-office-preview-x-men-194414 |access-date=June 10, 2011 | archive-url = https://web.archive.org/web/20121102070536/http://www.hollywoodreporter.com/news/box-office-preview-x-men-194414 | archive-date=November 2, 2012 | url-status=live}}

File:X-MEN First Class.JPG

The 1960s setting of X-Men: First Class, technologically inspired by the James Bond films of that era, also added to the international feel of the characters.{{cite news | author-link = Harry Knowles | last = Knowles | first = Harry | url = https://aintitcool.com/node/46217 | title = So Bryan Singer just called regarding Matthew Vaughn's X-Men: First Class ... I'm quite excited now | publisher = Ain't It Cool News | date = August 20, 2010 | access-date = December 18, 2010 | archive-date = August 24, 2010 | archive-url = https://web.archive.org/web/20100824102626/http://www.aintitcool.com/node/46217 | url-status = live }} Kinberg said the series was a major influence for the way they "did a cool job representing the period, in a way it still felt muscular and action-oriented", and Vaughn added that Magneto was his attempt to recreate Sean Connery's Bond in both style and the "badass, charming, ruthless and sweet" personality.{{cite video|title="Children of the Atom: Filming X-Men First Class"|type=Featurette|publisher=20th Century Fox Home Entertainment|location=X-Men: First Class Blu-Ray|trans-title=New Frontier: A Dose of Style}} The director said his goal was to "feel like a '60s Bond film, but with a little bit of reality it could be grounded in. I wanted there to be just a hint of this world of the mutants coming through. A mutant in this world having powers needed to be the equivalent of you or I sneezing, as normal as possible, at least until the humans start seeing it for the first time." At the same time, Vaughn tried to do the "bloody hard balancing" of modern and antique to recreate the 1960s in way it was "not so alien to the kids that it looked like a period piece." The director also tried to depict the era still in a realistic way, particularly "that '60s misogynist vibe" with women in skimpy suits, and MacTaggert's reliability as a CIA agent being questioned. There is also a nod to the 1950s and 60s in the scenes set in "Oxford University", starting with the "heterochromia scene". These are set in a pub called "the Eagle", next to the famous "Bridge of Sighs" in Oxford, but there is no such pub. This seems to be a reference to the Eagle pub in Cambridge, where Crick and Watson infamously announced their solution to the structure of DNA (in 1953), very relevant to the themes of the film.

Vaughn said he shot the film in a way which resembled the productions of the 1960s, with "very traditional framing, and camera movement when it needs to move, not just throwing it around and whizz-bang", and using the anamorphic format "to create a widescreen experience, which is emblematic of '60s movies, such as the James Bond films". The director had to hire five cinematographers – with sole credit being given to John Mathieson, who came halfway through the shoot and did "forty-five percent, fifty-five percent" of the film—and four assistant directors to successfully convey the look he wanted for the film. Visual effects supervisor Matt Johnson added that for the lighting of the digital interior of Cerebro, "keeping with the '60s vibe, we put in some old school elements such as lens flare and chromatic aberration and edge fringing."{{cite journal|url=http://www.digital.cinefex.com/nxtbooks/cinefex/126/#/96|title=First Class Effects|first=Jody|last=Duncan|journal=Cinefex|issue=126|date=July 2011|pages=96–120|access-date=June 5, 2012|archive-date=June 30, 2016|archive-url=https://web.archive.org/web/20160630203434/http://www.digital.cinefex.com/nxtbooks/cinefex/126/#/96|url-status=live}}{{subscription required}} The aesthetics of the decade were also invoked by designers Simon Clowes and Kyle Cooper of Prologue Films, who were responsible for the end credits and tried to do something that "could be done with traditional optical". The credits animation depicts DNA strands through simple geometric shapes, drawing inspiration from both Saul Bass and Maurice Binder's work in the Bond films.{{cite video|title=Retro Cool|publisher=20th Century Fox Home Entertainment|location=X-Men: First Class DVD|date=2011}}

The origin story made the X-Men costumes resemble the ones in the original comics, while still being functional, with the yellow parts resembling Kevlar and the blue looking like ballistic nylon, and resembling 1962 apparel in both the fabrics and the "Space Age fashion". The costumes tried to convey the characters' personalities — for instance, Xavier wore loose clothes, and Emma Frost's costumes were white and shimmery. Magneto's costume at the film's ending also closely resembled the original version from the comics, and three versions of his helmet were made, two to fit Fassbender's head and one for Bacon's.{{cite video|title="Children of the Atom: Filming X-Men First Class"|type=Featurette|publisher=20th Century Fox Home Entertainment|location=X-Men: First Class Blu-Ray|trans-title=Suiting Up}}

First Class employed 1,150 visual effects shots,{{cite web|url=http://www.awn.com/vfxworld/going-deeper-x-mens-origins|title=Going Deeper into X-Men's Origins|date=June 11, 2011 |first=Bill|last=Desowitz|publisher=Animation World Network|access-date=October 29, 2011 | page=[http://www.awn.com/articles/going-deeper-x-mens-origins/page/2%2C1 2] |archive-url=https://web.archive.org/web/20120604184051/http://www.awn.com/articles/going-deeper-x-mens-origins | archive-date= June 4, 2012 | url-status=live}} which was done by six companies: Rhythm & Hues Studios (R&H) was responsible for Emma Frost, Mystique and Angel, as well as set extensions; Cinesite handled Azazel, the visuals for Cerebro and environment effects; Luma Pictures did Banshee, Havok and Darwin; Moving Picture Company (MPC) did Beast, Riptide, and the scene where Shaw's yacht is destroyed and he escapes in a submarine; Digital Domain created Sebastian Shaw's powers, and Weta Digital was responsible for the climactic battle in Cuba. The overall coordination was provided by visual effects designer John Dykstra, who said the biggest difficulty was the tight schedule: "It was slightly less than a year and I've never done anything like that before (Spider-Man (2002) was frequently two years)." British company 4dMax employed special 3D scanners to digitize data of the sets and actors which would be used by the visual effects companies. This allowed for computer-generated sets such as the mirrored nuclear reactor where Magneto battles Shaw—for which the effects team used the mirror maze fight in Enter the Dragon (1973) as a reference—and the domed walls of Cerebro. Digital models of Washington and Moscow were also created based on photographs of the actual cities, with the Russian one in particular having vehicles and military hardware based on videos of a 1962 Red Square, and a digital army doing an actual Soviet-style march. With the exception of scenes featuring the actors on ships (shot on a small bridge set) and the X-Jet (done on a set replicating the front two-thirds of the aircraft, which was mounted atop a roller wheel so it could be spun) the naval battle was entirely digital, featuring a simulated water and high-resolution 3D models of the X-Jet, Shaw's submarine and 16 warships. The designs were mostly based on real vehicles, with the jet being a modified SR-71 Blackbird, the submarine a combination of various models from the 1940s and 1950s, and replicas of the actual US and USSR fleets in the 1960s—though a few were not in service in 1962. A particular Soviet cruiser was a larger version of the Kresta I and II, leading Weta to dub it the Kresta III. Practical effects were still used whenever possible, such as having on location most of the objects young Erik throws after his mother's death, actors and stuntmen dangled from wires, and real explosions and light effects as reference for Havok's beams.

While in the comics Shaw's absorption power was depicted by having him grow up to ten times his original size, First Class instead does what company Digital Domain called a "kinetic echo", where a digital Kevin Bacon would be rippled, deformed and at times multiplied in repeated "iterations" that appear in a short period, to "see [Shaw] displace and deform in a kinetic and organic way". According to Dykstra, the biggest problem with Frost's diamond body was depicting it "without looking like she was made of Jell-O or the polygon model of a human being". The morphed Frost, which the visual effects tried to make look more like a faceted crystal than glass, was rotomated into Jones in the live-action plates while still retaining the actress' eyes and lips. As the character kept on going in and out of her diamond form, a motion-capture tracking suit could not be employed, so instead the effects team used both gray and chrome balls and a jumpsuit covered in mirrors—which also served as a lighting reference.{{cite web|url=http://www.fxguide.com/featured/making-mutants-for-x-men-first-class/|title=Making Mutants for X-Men: First Class | first = Ian | last = Failes|date=June 16, 2011 | access-date=October 29, 2011 | publisher=fxguide.com | archive-url= https://web.archive.org/web/20111129171103/http://www.fxguide.com/featured/making-mutants-for-x-men-first-class/ |archive-date=November 29, 2011|url-status=live}} For Angel's digital wings, the animators studied slow-motion footage of dragonflies to create the wing pattern in a realistic way, and the designers added iridescence to "make the wings prettier".{{cite video|title="Children of the Atom: Filming X-Men First Class"|type=Featurette|publisher=20th Century Fox Home Entertainment|location=X-Men: First Class Blu-Ray|trans-title=Pulling Off the Impossible}} The visual of Banshee's screams was done through a digital ring-like structure based on renderings of sound waves such as Schlieren photography. The visual for Havok's blasts employed similar rings, concentrated in beams or rings of light which were then match moved into Till's mimed throwing. For Banshee's flight, the visual effects team used digital doubles only for distant shots, with closer ones employing Jones shot in a special flight rig. Azazel's teleporting was made to resemble the "inky smoky effects" used with Nightcrawler, who appeared in X2 and is Azazel's son in the comics. However, while Nightcrawler only left a smoke trail, the visual effects team had Azazel accompanied by digital fire and smoke "because he was more closely aligned with the devil". The fire was also used "as a mask to hide or reveal the body", according to effects supervisor Matt Johnson. Since the visible part of whirlwinds are the dust and dirt sucked up by them, the ones Riptide produces were made to resemble "a tornado of gas, made out of nothingness" by visual effects supervisor Nicolas Aithadi. The final product was mostly a practical effect made with dry ice, which was augmented by computer-generated imagery. The visual effects team portrayed Mystique's abilities slightly differently due to this being a younger version, with "the scales being slightly longer and the transformation being slightly showier than when she became the more mature Rebecca." For Beast, computer graphics depicted his simian-like feet, the transformation sequence, and a few facial replacements for when Beast opened his mouth wider than the mask on Hoult's face allowed.

{{Main|X-Men: First Class (soundtrack)}}

Henry Jackman, who had previously collaborated with Vaughn in Kick-Ass (2010), composed the pop-and-rock infused incidental music for First Class. He further drew inspiration from John Barry's musical themes, which had a "posh pop" musical style, and also produced a "Superman-style theme" in the final parts of the film. The theme was then stretched half-time and used in the remainder of the film, after Vaughn's directions who felt it as "triumphant" score for a team that is disjointed.{{cite video|title="Children of the Atom: Filming X-Men: First Class"|type=Featurette|publisher=20th Century Fox Home Entertainment|location=X-Men: First Class Blu-Ray|trans-title=Sound and Fury}}{{cite web|url=http://www.filmmusicmag.com/?p=8019|title=Audio: On The Score With Henry Jackman|first=Daniel|last=Schweiger|date=June 6, 2011|publisher=Film Music Magazine|access-date=December 22, 2011|archive-date=December 29, 2011|archive-url=https://web.archive.org/web/20111229042946/http://www.filmmusicmag.com/?p=8019|url-status=live}} Several pop tracks were also integrated in the film. The original score album was released digitally by Sony Classical Records on June 6, 2011, and was followed by a physical release on July 4, 2011.

The premiere for X-Men: First Class took place at the Ziegfeld Theatre in New York City, on May 25, 2011.{{cite news|url=https://www.upi.com/News_Photos/Entertainment/X-Men-First-Class-premiere-in-New-York/5161|title='X-Men: First Class' premiere in New York|work= United Press International|access-date=January 13, 2021|date= May 26, 2011|archive-date=January 13, 2021|archive-url=https://archive.today/20210113005509/https://www.upi.com/News_Photos/Entertainment/X-Men-First-Class-premiere-in-New-York/5161/|url-status=live}} The promotional campaign aimed for non-traditional partners, with Fox signing deals with Farmers Insurance Group, BlackBerry PlayBook and the U.S. Army.{{cite web|url=http://adage.com/article/media/farmers-insurance-a-seat-x-men-classroom/227959/|title=How, and Why, Farmers Insurance Got a Seat in 'X-Men' Classroom|work=Advertising Age|access-date=December 22, 2011|first=Andrew|last=Hampp|date=June 3, 2011|archive-date=May 19, 2018|archive-url=https://web.archive.org/web/20180519185039/http://adage.com/article/media/farmers-insurance-a-seat-x-men-classroom/227959/|url-status=live}} Wrigley Australia issued an X-Men-themed edition of their 5 chewing gum.{{cite press release|url=http://www.wrigley.com/aunz/press/news-details.aspx?id=3307|title=Discover your mutant power with 5X gum|publisher=Wrigley Australia|date=May 9, 2011|access-date=February 26, 2016|archive-date=November 11, 2021|archive-url=https://web.archive.org/web/20211111004546/https://www.mars.com/|url-status=live}}

X-Men: First Class was released on DVD and Blu-ray in the United States on September 27 and in the United Kingdom on October 31, 2011.{{cite web|url=https://www.ign.com/articles/2011/07/19/x-men-first-class-announced-for-dvdblu-ray|title=X-Men: First Class Announced for DVD/Blu-ray|date=July 7, 2011|first=David|last=McCutcheon|publisher=IGN|access-date=May 11, 2012|archive-date=November 6, 2018|archive-url=https://web.archive.org/web/20181106223137/https://www.ign.com/articles/2011/07/19/x-men-first-class-announced-for-dvdblu-ray|url-status=live}}{{cite web|url=http://blogs.coventrytelegraph.net/thegeekfiles/2011/08/uk-date-and-details-announced.html|title=UK date and details announced for X-Men: First Class on DVD and Blu-ray|first=David|last=Bentley|work=Coventry Telegraph|location=Coventry, UK|date=August 22, 2011|access-date=May 6, 2012|url-status=dead|archive-url=https://web.archive.org/web/20120330012229/http://blogs.coventrytelegraph.net/thegeekfiles/2011/08/uk-date-and-details-announced.html|archive-date=March 30, 2012}} The home release topped the sales charts in the United States{{cite journal | url = https://www.hollywoodreporter.com/news/x-men-first-class-leads-235648 | title = 'X-Men: First Class' Leads Wave of Summer Blockbusters to DVD | journal = The Hollywood Reporter | date = September 14, 2011 | first = Thomas K. | last = Arnold | access-date = April 17, 2020 | archive-date = November 6, 2018 | archive-url = https://web.archive.org/web/20181106212130/https://www.hollywoodreporter.com/news/x-men-first-class-leads-235648 | url-status = live }} with approximately 385,000 DVDs.{{cite web |url=https://www.the-numbers.com/dvd/charts/weekly/2011/20110911.php |access-date=June 6, 2012 |title=US DVD Sales Chart for Week Ending Sep 11, 2011 |publisher=The-Numbers |archive-date=November 3, 2012 |archive-url=https://web.archive.org/web/20121103150406/http://www.the-numbers.com/dvd/charts/weekly/2011/20110911.php |url-status=live }} Blu-ray accounted for 60 percent of first-week disc sales, amounting to about 575,000 discs.{{cite journal|url= http://www.homemediamagazine.com/top-sellers/top-20-sellers-week-ended-091111 |access-date=June 6, 2012 | title=Top 20 Sellers for the Week Ended 09/11/11 |journal=Home Media Magazine|publisher=Questex Media Group|archive-url=https://web.archive.org/web/20120207124745/http://www.homemediamagazine.com/top-sellers/top-20-sellers-week-ended-091111|archive-date=February 7, 2012|url-status=live}} In the UK it sold 150,000 units.{{cite web |url=http://www.officialcharts.com/chart-news/x-men-first-class-flies-the-top-of-the-charts/ |title=X-Men: First Class Flies the Top of the Charts |publisher=Official Charts Company |date=November 4, 2011 |access-date=May 7, 2012 |archive-date=June 28, 2012 |archive-url=https://web.archive.org/web/20120628120547/http://www.officialcharts.com/chart-news/x-men-first-class-flies-the-top-of-the-charts/ |url-status=live }} The film was later released on 4K UHD Blu-ray on October 4, 2016.{{Citation|title=X-Men: First Class 4K Blu-ray|url=http://www.blu-ray.com/movies/X-Men-First-Class-4K-Blu-ray/160898/|access-date=January 31, 2018|archive-date=February 15, 2018|archive-url=https://web.archive.org/web/20180215063756/http://www.blu-ray.com/movies/X-Men-First-Class-4K-Blu-ray/160898/|url-status=live}}

X-Men: First Class went on the general release on June 3, 2011. In North America, the film opened on approximately 6,900 screens at 3,641 locations, debuting atop the weekend box office with earnings of $55.1 million across the three days,{{cite news | url=http://today.msnbc.msn.com/id/43286389/ns/today-entertainment/ | title='X-Men' mutants weaken with prequel debut | agency=Associated Press |publisher = msnbc.com | date=June 5, 2011 | access-date=June 5, 2012 | author=Germain, David | archive-url=https://web.archive.org/web/20110608132118/http://today.msnbc.msn.com/id/43286389/ns/today-entertainment | url-status=dead | archive-date=June 8, 2011}}{{cite web |url=https://boxofficemojo.com/news/?id=3179&p=.htm |title=Weekend Report: 'First Class' Ranks Last Among 'X-Men' |publisher=Box Office Mojo |date=June 6, 2011 |access-date=June 5, 2012 |author=Gray, Brandon |archive-url=https://web.archive.org/web/20110608130347/http://www.boxofficemojo.com/news/?id=3179&p=.htm |archive-date=June 8, 2011 |url-status=dead }} including $3.4 million in its Friday midnight launch.{{cite web|url=https://www.hollywoodreporter.com/news/box-office-report-x-men-194741|title=Box Office Report: 'X-Men: First Class' Does Good Midnight Business|date=June 3, 2011|first=Pamela|last=McClintock|work=The Hollywood Reporter|access-date=June 4, 2012|archive-date=July 2, 2012|archive-url=https://web.archive.org/web/20120702181747/http://www.hollywoodreporter.com/news/box-office-report-x-men-194741|url-status=live}} This opening was much lower than the opening weekends of X-Men: The Last Stand ($102.7 million), X2 ($85.5 million), and X-Men Origins: Wolverine ($85.0 million), but slightly higher than the original film ($54.5 million). Executives at 20th Century Fox stated they had achieved their goal by opening with about the same numbers as the first X-Men film and that it was an excellent start to a new chapter of the franchise.

First Class also opened 8,900 locations in 74 overseas markets, which brought in $61 million during the weekend—standing third in the overseas ranking behind Pirates of the Caribbean: On Stranger Tides and The Hangover Part II. The film opened atop the box office in twenty countries, with the biggest grosses being in the United Kingdom ($9 million, including previews), France ($7.1 million), Mexico ($5 million), South Korea ($5.4 million) and Australia ($5.1 million).{{cite web | url=https://www.hollywoodreporter.com/news/x-men-first-class-draws-194977 | title='X-Men: First Class' Draws $61 Million at the Foreign Box Office | publisher=Nielsen Company | work=The Hollywood Reporter | date=June 5, 2011 | access-date=June 5, 2012 | last=Segers | first= Frank | archive-url = https://web.archive.org/web/20110608023630/http://www.hollywoodreporter.com/news/x-men-first-class-draws-194977 | archive-date=June 8, 2011 |url-status=live}} In its second weekend X-Men: First Class dropped 56.2 percent, the second-smallest second-weekend drop in the franchise behind X2: X-Men United (53.2 percent), and came in with $24.1 million, in second place to Super 8.{{cite web |last=Gray |first=Brandon |url=https://boxofficemojo.com/news/?id=3184&p=.htm |title=Weekend Report: 'Super 8' Checks In at Top Spot |publisher=Box Office Mojo |date=June 13, 2011 |access-date=June 5, 2012 |archive-date=July 3, 2012 |archive-url=https://web.archive.org/web/20120703211811/http://www.boxofficemojo.com/news/?id=3184&p=.htm |url-status=live }} Overseas, it rose to number two behind Kung Fu Panda 2, with $42.2 million.{{cite web | url=https://www.hollywoodreporter.com/news/box-office-report-kung-fu-197101 | title='Kung Fu Panda 2' Commands $56.5 Million Internationally | publisher=Nielsen Company | work=The Hollywood Reporter | date=June 12, 2011 | access-date=June 5, 2012 | last=Segers | first=Frank | archive-date=November 12, 2011 | archive-url=https://web.archive.org/web/20111112114308/http://www.hollywoodreporter.com/news/box-office-report-kung-fu-197101 | url-status=live }} The film grossed $146,408,305 in the United States and Canada and $207,215,819 in foreign markets, bringing its worldwide total to $353,624,124.

On review aggregation website Rotten Tomatoes X-Men: First Class holds an approval rating of {{RT data|score}} based on {{RT data|count}} reviews, with an average rating of {{RT data|average}}. The site's critical consensus reads, "With a strong script, stylish direction, and powerful performances from its well-rounded cast, X-Men: First Class is a welcome return to form for the franchise."{{Cite Rotten Tomatoes |id={{RT data|rtid|noprefix=y}} |type=m |title=X-Men: First Class |access-date={{RT data|access date}}}}{{RT data|edit}} On Metacritic, the film received a score of 65 out of 100, based on reviews from 38 critics, indicating "generally favorable reviews".{{cite Metacritic|id=x-men-first-class|type=movie|title=X-Men: First Class|access-date=January 14, 2021}} Audiences polled by CinemaScore gave the film an average grade of "B+" on an A+ to F scale.{{Cite web |url=https://deadline.com/2011/06/first-box-office-x-men-first-class-looking-like-23m-friday-including-3-3m-midnights-for-estimated-58m-weekend-137449/ |title=RISKY REBOOT? 'X-Men: First Class' $56M; Lowest Marvel Opening In A Long Time |first=Nikki |last=Finke |date=June 3, 2011 |access-date=May 10, 2022 |website=Deadline}}

Among the major trade publications, Todd McCarthy of The Hollywood Reporter described the film as "audacious, confident and fueled by youthful energy", and said that "director Vaughn impressively maintains a strong focus dedicated to clarity and dramatic power ... and orchestrates the mayhem with a laudable coherence, a task made easier by a charging, churning score by Henry Jackman ...".{{cite web | url=https://www.hollywoodreporter.com/review/x-men-first-class-movie-192965 |title=X-Men: First Class: Movie Review | publisher=Nielsen Company | work=The Hollywood Reporter | date=May 30, 2011 | access-date=June 5, 2012 | author=McCarthy, Tod|archive-url=https://web.archive.org/web/20110601213842/http://www.hollywoodreporter.com/review/x-men-first-class-movie-192965 | url-status=live |archive-date=June 1, 2011}} Justin Chang of Variety said the film "feels swift, sleek and remarkably coherent", and that "the visual effects designed by John Dykstra are smoothly and imaginatively integrated ..."{{cite web | url=https://variety.com/2011/film/reviews/x-men-first-class-1117945347/ | title=Review: X-Men: First Class | work=Variety | date=May 29, 2011 | access-date=May 31, 2011 | last=Chang | first=Justin | archive-date=April 6, 2013 | archive-url=https://web.archive.org/web/20130406123234/http://variety.com/2011/film/reviews/x-men-first-class-1117945347/ | url-status=live }} Frank Lovece of Film Journal International lauded "a wickedly smart script with a multilayered theme that ... never loses sight of its ultimate story, and makes each emotional motivation interlock, often shockingly playing for keeps with its characters."{{cite web | url=http://www.filmjournal.com/filmjournal/content_display/reviews/major-releases/e3ie161d52b7c6dfd0feaabf7fdce60fc03 | title=Film Review: X-Men: First Class | work=Film Journal International | date=June 2, 2011 | access-date=June 5, 2012 | author-link=Frank Lovece | last=Lovece | first=Frank | archive-date=August 3, 2011 | archive-url=https://web.archive.org/web/20110803100932/http://www.filmjournal.com/filmjournal/content_display/reviews/major-releases/e3ie161d52b7c6dfd0feaabf7fdce60fc03 | url-status=dead }}

In consumer publications, Lisa Schwarzbaum of Entertainment Weekly praised "the kind of youthful, Brit-knockabout pop energy director Matthew Vaughn absorbed from his previous collaborations as a producer of director Guy Ritchie's bloke-y larks", and found McAvoy and Fassbender "a casting triumph. These two have, yes, real star magnetism, both individually and together: They're both cool and intense, suave and unaffected, playful and dead serious about their grand comic-book work."{{cite magazine|url=https://ew.com/article/2011/06/15/x-men-first-class-review/|title=X-Men: First Class Review|last=Schwarzbaum|first=Lisa|author-link=Lisa Schwarzbaum|magazine=Entertainment Weekly|date=June 15, 2011|access-date=June 4, 2019|archive-date=November 28, 2020|archive-url= https://web.archive.org/web/20201128224936/https://ew.com/article/2011/06/15/x-men-first-class-review/|url-status= live}} Peter Howell of the Toronto Star called it "a blockbuster with brains" and said Vaughn "brings similar freshness to this comic creation as he did to Kick-Ass, and manages to do so while hewing to the saga's serious dramatic intent."{{cite web|url= https://www.thestar.com/entertainment/2011/06/01/xmen_first_class_brainy_blockbuster.html|title=X-Men: First Class: Brainy blockbuster|last=Howell|first=Peter|work=Toronto Star|location=Canada|date=June 1, 2011|access-date=June 5, 2012|archive-date=March 3, 2014|archive-url=https://archive.today/20140303100629/http://www.thestar.com/entertainment/2011/06/01/xmen_first_class_brainy_blockbuster.html|url-status=live}}

{{Anchor|Awards|Accolades}}

{{main|X-Men: Days of Future Past|X-Men: Apocalypse|Dark Phoenix (film)}}

The film's success led to the continuation of the film series. X-Men: Days of Future Past, which acts as a sequel to both First Class and The Last Stand, was released on May 23, 2014. A direct sequel, X-Men: Apocalypse, was released on May 27, 2016. A third and final sequel, X-Men: Dark Phoenix, was released on June 7, 2019.

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