The X-Men are a team of fictional mutant superheroes appearing in American comic books published by Marvel Comics. Created by artist/co-writer Jack Kirby and writer Stan Lee, the characters first appeared in The X-Men #1 and formed one of the most recognizable and successful franchises of Marvel Comics, appearing in numerous books, television shows, films, and video games.
Most of the X-Men are mutants, a subspecies of humans who are born with superhuman abilities activated by the "X-Gene". The X-Men fight for peace and equality between normal humans and mutants in a world where anti-mutant bigotry is fierce and widespread. They are led by Charles Xavier, also known as Professor X, a powerful mutant telepath who can control and read minds. Their archenemy is Magneto, a powerful mutant with the ability to manipulate and control magnetic fields who leads the Brotherhood of Mutants. Both have opposing views and philosophies regarding the relationship between mutants and humans. While the former works towards peace and understanding between mutants and humans, the latter views humans as a threat and believes in taking an aggressive approach against them, though he has found himself working alongside the X-Men from time to time.
Professor X is the founder of Xavier's School for Gifted Youngsters at a location commonly called the X-Mansion, which recruits mutants from around the world to teach them how to use their powers and coexist with humanity. Located in Salem Center in Westchester County, New York, the X-Mansion is the home and training site of the X-Men. The founding five members of the X-Men who appear in The X-Men #1 are Angel-Archangel, Beast, Cyclops, Iceman and Jean Grey ; Professor X and Magneto also made their first appearances in The X-Men #1 and later on new members such as Havok, Polaris, Mimic and Changeling joined though only the former two managed to become a regular recurring staple of the team lineup. Eventually, the X-Men roster expanded to include a wide variety of members from numerous origins, including Wolverine, Storm, Rogue, Gambit, Jubilee, Nightcrawler, Colossus, Kitty Pryde/Shadowcat, Psylocke, Forge, Longshot, and Bishop. Since then, dozens of mutants from various countries and diverse backgrounds, and even a number of non-mutants, have held membership as X-Men.
Background and creationIn 1963, with the success of Spider-Man, the Hulk, Thor, Iron Man, and the Fantastic Four, co-creator Stan Lee wanted to create another group of superheroes but did not want to have to explain how they got their powers. In 2004, Lee recalled, "I couldn't have everybody bitten by a radioactive spider or exposed to a gamma ray explosion. And I took the cowardly way out. I said to myself, 'Why don't I just say they're mutants? They were born that way.
In a 1987 interview, Kirby said:
The X-Men, I did the natural thing there. What would you do with mutants who were just plain boys and girls and certainly not dangerous? You school them. You develop their skills. So I gave them a teacher, Professor X. Of course, it was the natural thing to do, instead of disorienting or alienating people who were different from us, I made the X-Men part of the human race, which they were. Possibly, radiation, if it is beneficial, may create mutants that'll save us instead of doing us harm. I felt that if we train the mutants our way, they'll help us – and not only help us, but achieve a measure of growth in their own sense. And so, we could all live together.
Lee devised the series title after Marvel publisher Martin Goodman turned down the initial name, "The Mutants," stating that readers would not know what a "mutant" was.
Within the Marvel Universe, the X-Men are widely regarded to have been named after Professor Xavier himself. The original explanation for the name, as provided by Xavier in The X-Men #1, is that mutants "possess an extra power... one which ordinary humans do not!! That is why I call my students... X-Men, for EX-tra power!"
Original rosterEarly X-Men issues introduced the original team composed of Cyclops, Marvel Girl, Beast, Angel, and Iceman, along with their archenemy Magneto and his Brotherhood of Evil Mutants featuring Mastermind, Quicksilver, Scarlet Witch, and Toad. The comic focused on a common human theme of good versus evil and later included storylines and themes about prejudice and racism, all of which have persisted throughout the series in one form or another. The evil side in the fight was shown in human form and under some sympathetic beginnings via Magneto, a character who was later revealed to have survived Nazi concentration camps only to pursue a hatred for normal humanity. His key followers, Quicksilver and the Scarlet Witch, were Romani. Only one new member of the X-Men was added, Mimic/Calvin Rankin, but soon left due to his temporary loss of power.
The title lagged in sales behind Marvel's other comic franchises. In 1969, writer Roy Thomas and illustrator Neal Adams rejuvenated the comic book and gave regular roles to two recently introduced characters: Havok/Alex Summers and Lorna Dane, later called Polaris. However, these later X-Men issues failed to attract sales and Marvel stopped producing new stories with issue #66, later reprinting a number of the older comics as issues #67–93.
All-New, All-Different X-MenIn Giant-Size X-Men #1, writer Len Wein and artist Dave Cockrum introduced a new team that starred in a revival of The X-Men, beginning with issue #94. This new team replaced the previous members with the exception of Cyclops, who remained. This team differed greatly from the original. Unlike in the early issues of the original series, the new team was not made up of teenagers and they also had a more diverse background. Marvel's corporate owners, Cadence Industries, had suggested the new team should be international, feeling it needed characters with "foreign appeal". So each character was from a different country with varying cultural and philosophical beliefs, and all were already well-versed in using their mutant powers, several being experienced in combat. Another major difference is that unlike the original X-Men who were White Anglo-Saxon Protestants with the exception of the half-Irish/half-Jewish Iceman, the "All-New, All-Different" X-Men team was composed of a Soviet/Russian atheist, a German Catholic blue demon-like creature, a female African Kenyan-American woman, an Irish Catholic, an Apache Native American, a Japanese male and a Canadian agent as its members.
The "all-new, all-different X-Men" were led by Cyclops, from the original team, and consisted of the newly created Colossus, Nightcrawler, Storm, and Thunderbird, and three previously introduced characters: Banshee, Sunfire, and Wolverine. Wolverine eventually became the breakout character on the team and, in terms of comic sales and appearances, the most popular X-Men character even getting his own solo title. Sunfire would reject membership of the X-men shortly after their first mission. However, this team would not remain whole for long as Sunfire quit immediately and never really accepted the other members, and Thunderbird would die in the very next mission. Filling in the vacancy, a revamped Jean Grey soon rejoined the X-Men under her new persona of "Phoenix". Angel, Beast, Iceman, Havok, and Polaris also made significant guest appearances.
The revived series was illustrated by Cockrum, and later by John Byrne, and written by Chris Claremont. Claremont became the series' longest-running contributor. The run met with critical acclaim and produced such landmark storylines as the death of Thunderbird, the emergence of Phoenix, the saga of the Starjammers and the M'Kraan Crystal, the introduction of Alpha Flight and the Proteus saga. Other characters introduced during this time include Amanda Sefton, Mystique, and Moira MacTaggert, with her genetic research facility on Muir Island.
The 1980s began with the comic's best-known story arc, the Dark Phoenix Saga, which saw Phoenix manipulated by the illusionist Mastermind and becoming corrupted with an overwhelming lust for power and destruction as the evil Dark Phoenix. Other important storylines included Days of Future Past, the saga of Deathbird and the Brood, the discovery of the Morlocks, the invasion of the Dire Wraiths and The Trial of Magneto, as well as , the partial inspiration for the 2003 movie X2: X-Men United.
By the early 1980s, X-Men was Marvel's top-selling comic title. Its sales were such that distributors and retailers began using an "X-Men index", rating each comic book publication by how many orders it garnered compared to that month's issue of X-Men. The growing popularity of Uncanny X-Men and the rise of comic book specialty stores led to the introduction of a number of ongoing spin-off series nicknamed "X-Books." The first of these was The New Mutants, soon followed by Alpha Flight, X-Factor, Excalibur, and a solo Wolverine title. When Claremont conceived a story arc, the Mutant Massacre, which was too long to run in the monthly X-Men, editor Louise Simonson decided to have it overlap into several X-Books. The story was a major financial success, and when the later Fall of the Mutants was similarly successful, the marketing department declared that the X-Men lineup would hold such crossovers annually.
Throughout the decade, Uncanny X-Men was written solely by Chris Claremont, and illustrated for long runs by John Byrne, Dave Cockrum, Paul Smith, John Romita, Jr., and Marc Silvestri. Additions to the X-Men during this time were Kitty Pryde/Shadowcat, Rogue, Jean Grey/Phoenix, Psylocke, Dazzler, Longshot, Jubilee, Forge and Gambit. In a controversial move, Professor X relocated to outer space to be with Lilandra Neramani, Majestrix of the Shi'ar Empire, in 1986. Magneto then joined the X-Men in Xavier's place and became the director of the New Mutants. This period also included the emergence of the Hellfire Club, the arrival of the mysterious Madelyne Pryor, and the villains Apocalypse, Mister Sinister, Mojo, and Sabretooth.
Blue and Gold (1991–2001)In 1991, Marvel revised the entire lineup of X-Men comic book titles, centered on the launch of a second X-Men series, simply titled . With the return of Xavier and the original X-Men to the team, the roster was split into two strike forces: Cyclops's "Blue Team" and Storm's "Gold Team".
The first issues of the second X-Men series were written by Claremont and drawn and co-plotted by Jim Lee. Retailers pre-ordered over 8.1 million copies of issue #1, generating and selling nearly $7 million, making it, according to Guinness Book of World Records, the best-selling comic book of all-time. Guinness presented honors to Claremont at the 2010 San Diego Comic-Con.
Another new X-book released at the time was X-Force, featuring the characters from The New Mutants, led by Cable; it was written by Rob Liefeld and Fabian Nicieza. Internal friction soon split the X-books' creative teams. In a controversial move, X-Men editor Bob Harras sided with Lee over Claremont in a dispute over plotting. Claremont left after only three issues of X-Men, ending his 16-year run as X-Men writer. Marvel replaced Claremont briefly with John Byrne, who scripted both books for a few issues. Byrne was then replaced by Nicieza and Scott Lobdell, who would take over the majority of writing duties for the X-Men until Lee's own departure months later when he and several other popular artists would leave Marvel to form Image Comics. Jim Lee's X-Men designs would be the basis for much of the X-Men animated series and action figure line as well as several Capcom video games.
The 1990s saw an even greater number of X-books with numerous ongoing series and miniseries running concurrently. X-book crossovers continued to run annually, with "" in 1990, "The Muir Island Saga" in 1991, "X-Cutioner's Song" in 1992, "Fatal Attractions" in 1993, "Phalanx Covenant" in 1994, "Legion Quest"/"Age of Apocalypse" in 1995, "Onslaught" in 1996, and "" in 1997. Though the frequent crossovers were criticized by fans as well as editorial and creative staff for being artificially regular, disruptive to the direction of the individual series, and having far less lasting impact than promised, they continued to be financially successful.
There were many new popular additions to the X-Men in the 1990s, including Gambit, Cable, and Bishop. Gambit became one of the most popular X-Men, rivaling even Wolverine in size of fanbase after his debut in Uncanny X-Men #266. Many of the later additions to the team came and went, such as Joseph, Maggott, Marrow, Cecilia Reyes, and a new Thunderbird. Xavier's New Mutants grew up and became X-Force, and the next generation of students began with Generation X, featuring Jubilee and other teenage mutants led and schooled by Banshee and ex-villainess Emma Frost at her Massachusetts Academy. In 1998, Excalibur and X-Factor ended and the latter was replaced with Mutant X, starring Havok stranded in a parallel universe. Marvel launched a number of solo series, including Deadpool, Cable, Bishop, X-Man, and Gambit, but few of the series would survive the decade.
Morrison Era (2001–2004)In 2000, Claremont returned to Marvel and was put back on the primary X-Men titles during the Revolution revamp. He was later removed from the titles in 2001 and created his spin-off series, X-Treme X-Men. X-Men had its title changed to New X-Men and writer Grant Morrison took over. The book is often referred to as the Morrison-era, due to the drastic changes he made, beginning with "E Is For Extinction", where a new villain, Cassandra Nova, destroys Genosha, killing sixteen million mutants. Morrison also brought reformed ex-villain Emma Frost into the primary X-Men team, and opened the doors of the school by having Xavier "out" himself to the public about being a mutant. The bright spandex costumes that had become iconic over the previous decades were replaced by black leather street clothes reminiscent of the uniforms of the X-Men films. Morrison also introduced Xorn, who would figure prominently in the climax of his run. Ultimate X-Men set in Marvel's revised imprint was also launched, while Chuck Austen began his controversial run on Uncanny X-Men.
Several short-lived spin-offs and miniseries started featuring several X-Men in solo series, such as Emma Frost, Mystique and Nightcrawler. Another series, Exiles, started at the same time and concluded in December 2007 which led to New Exiles in January 2008 written by Claremont.
Notable additions to the X-Men have been Emma Frost, Danielle Moonstar, Husk and Northstar while former villain Juggernaut became member of the X-Men. Notable story arcs of this era are "E Is For Extinction", "Planet X" and "Here Comes Tomorrow".
- * New X-Men
- * Uncanny X-Men
- * X-Treme X-Men
- X-Men in Training
- * New Mutants vol 2
X-Men ReLoad (2004–2007)
Several short-lived spin-offs and miniseries started featuring several X-Men in solo series, such as Gambit and Rogue. Cable and Deadpool's books were merged into one book, Cable & Deadpool.
Notable additions to the X-Men have been Armor, Pixie and Warpath, while former villains such as Lady Mastermind, Mystique, and Sabretooth became members of the X-Men. Notable story arcs of this decade are "Gifted", "House of M", "" and "".
- * Astonishing X-Men
- * Uncanny X-Men
- * X-Men
- X-Men in Training
- * New X-Men
Messiah trilogy (2007–2011)
In 2009, Messiah War written by Craig Kyle and Chris Yost served as the second part in the trilogy was released. Utopia written by Matt Fraction, was a crossover of Dark Avengers and Uncanny X-Men that served as a part of the "Dark Reign" storyline. A new New Mutants volume written by Zeb Wells, which featured the more prominent members of the original team reunited, was launched. Magneto joined the X-Men during the Nation X storyline to the dismay of other members of the X-Men, such as Beast, who left the team. Magneto began to work with Namor to transform Utopia into a homeland for both mutants and Atlanteans. After the conclusion of Utopia, Rogue became the main character of X-Men: Legacy.
In 2010, "" concluded the plot threads on Messiah Complex and Messiah War.
Notable additions to the X-Men have been Pixie, Karma, Sunspot, Magma, Magik, Namor, Domino, Boom Boom, Fantomex and X-23. Other notable story arcs of this era are "", "", "X-Infernus", "Utopia", "Nation X" and "Necrosha". The X-Men were also involved in the "Secret Invasion" storyline
- * Uncanny X-Men
- * X-Men Legacy
- * Astonishing X-Men
- X-Men in Training
- * Young X-Men
- * Generation Hope
Schism through Regenesis
Notable additions to the X-Men have been Warbird and Blink. Notable story of this era was "Avengers vs. X-Men".
- Cyclops' X-Men
- *Uncanny X-Men, vol. 2
- *X-Men, vol. 3
- *New Mutants, vol. 3
- Wolverine's X-Men
- * Wolverine and the X-Men
- * X-Men Legacy
- * Astonishing X-Men
- X-Men in Training
- * Wolverine and the X-Men
Time displaced original X-Men
Notable additions to the X-Men have been Firestar and M. Notable story arcs of this era are "Battle of the Atom", "Death of Wolverine", "AXIS" and "The Black Vortex".
- Cyclops' X-Men
- *All-New X-Men
- *Uncanny X-Men, vol. 3
- Wolverine's X-Men
- *Amazing X-Men
- *X-Men, vol. 4
- X-Men in Training
- *Wolverine and the X-Men
Notable story arcs of this era are "Apocalypse Wars", "Death of X" and "Inhumans vs. X-Men".
- *Extraordinary X-Men
- * Uncanny X-Men, vol. 4
- * All-New X-Men, vol. 2
Mainly Charles Xavier, Cyclops, Wolverine and Jean were resurrected and time displaced X-Men returned to their original timeline during the Extermination event.
Notable additions to the X-Men have been Wolfsbane and Multiple Man. Notable story arcs of this decade are "Phoenix Resurrection: The Return of Jean Grey", "Extermination", "Hunt for Wolverine", "Return of Wolverine", "X-Men: Disassembled" and "Age of X-Man".
- *X-Men Gold
- * X-Men Red
- * Astonishing X-Men, vol 4
- * X-Men Blue
- X-Men in Training
- *Generation X, vol. 2
- X-Men – the flagship title of the X-titles starring a team led by Cyclops consisting of Summers family members Jean Grey, Cable, Rachel Summers, Havok, Corsair, Vulcan and frenemy Wolverine.
- Marauders – a rebranding of the supervillain team featuring Kitty Pryde, Storm, Iceman, Bishop, Pyro and Emma Frost as pirates who travel the world via ship to protect mutantkind.
- Excalibur – a title starring Betsy Braddock, who takes over the mantle of Captain Britain from her brother Brian Braddock, alongside Rogue, Gambit, Jubilee, Rictor and Apocalypse.
- New Mutants – spacefaring title featuring a team led by Magik with a roster including Sunspot, Wolfsbane, Mirage, Karma, Cypher, Mondo and Chamber. The comic will also co-star the Starjammers.
- Fallen Angels – a revival of the 1987 title, this incarnation stars Kwannon who recruits Cable and X-23 for a personal mission which could jeapordize all of mutantkind.
- X-Force – featuring the mutant black-ops team which will consist of Beast, Jean Grey, Sage, Domino, Wolverine, Colossus and Kid Omega.
- Wolverine – featuring the titular mutant of the same name.
- Hellions – featuring a team of mutant troublemakers with initial cast consisting of Empath, Havok, Mister Sinister, Nanny, Orphan-Maker, Psylocke, Scalphunter, and Wild Child.
- Cable – featuring the younger version of the titular character.
- X-Factor – a team investigating when a mutant dies and how to keep the rules of reincarnation which will consist of Polaris, Prestige, Northstar, Daken, Eye-Boy and Prodigy.
- Children of the Atom – a new generation of X-Men living in Krakoa.
- X-Men/Fantastic Four – focusing on Franklin Richards of the Fantastic Four being offered to join the X-Men nation of Krakoa.
- Giant-Size X-Men – a series of one-shots focusing on different X-Men members. Jean Grey, Emma Frost, and Magneto are featured in the series.
- X-Corp – TBA
- Untitled Moira MacTaggert series – featuring the titular character.
Time travelMany of the X-Men's stories delve into time travel either in the sense of the team traveling through time on a mission, villains traveling through time to alter history, or certain characters traveling from the past or future in order to join the present team. Story arcs and spin-offs that are notable for using this plot device include Days of Future Past, , All-New X-Men, Messiah War, and Battle of the Atom. Characters who are related to time travel include: Apocalypse, Bishop, Cable, Old Man Logan, Prestige, Hope Summers, Tempus, and Stryfe. A major notable period in the X-Men's history began in 2012s All-New X-Men when Beast used time-travel to bring the original five 1960s X-Men into the present. These time-displaced characters subsequently starred in their own title X-Men Blue before returning to their original timeline in 2018s Extermination event.
Death and resurrectionOne of the most recurring plot devices used in the X-Men franchise is death and resurrection, mostly in the sense of Jean Grey and her bond with the Phoenix. Though not as iconic as Jean and the Phoenix, many other X-Men characters have died and come back to life on occasion. Death and resurrection has become such a common occurrence in the X-books that the characters have mentioned on numerous occasions that they're not strangers to death or have made comments that death doesn't always have a lasting effect on them. X-Necrosha is a particular story arc that sees Selene temporarily reanimate many of the X-Men's dead allies and enemies in order for her to achieve godhood.
FateMany of the characters deal with the topic of fate. In particular, Destiny's abilities of precognition have affected certain plot points in the X-Men's history long after she was killed off due to both the X-Men and their enemies constantly searching for her missing diaries that foretell certain futures. The topic of fate takes center stage yet again in a story arc called "The Extremists" involving attacks against the Morlocks due to one of them seeing a dark future for their people. Some characters believe they already know their own fates, such as Apocalypse believing he is fated to rule the mutants or Magneto believing he is fated to lead the mutants to rise up against humans. Other characters such as Jean, Prestige, Evan Sabanur, Hope Summers, and Warren Worthington III have all been wary of their fates and have all taken measures to alter their futures.
Space travelhas been a common staple in the X-Men books beginning with the Phoenix and Dark Phoenix sagas. Since then space has been involved in many stories involving the X-Men's allies and occasional rivals the Shi'ar along with stories involving the Phoenix Force. Space has been the setting for many stories involving the likes of The Brood, such as the story arc where the villainous species was first introduced. Through space noteworthy characters like The Starjammers and Vulcan were introduced. Space Travel played a major role in Joss Whedon's run on Astonishing X-Men via the introduction of S.W.O.R.D. and especially in one of the final story arcs under his authorship called "Unstoppable". Other notable story arcs involving space included "", "Rise and Fall of the Shi'ar Empire", "", "War of Kings", and "The Black Vortex".
SanityThe topic of sanity has been addressed in many of the major heroes and villains of X-Men. Most famously this is addressed in Jean Grey when she gains near omnipotence through the Phoenix and Professor Xavier after he violently uses his powers against Magneto, unintentionally creating Onslaught. Mystique's sanity wavers throughout the franchise as her constant transformations causes more and more of her mind to fracture. Ever since swapping bodies with Revanche, Psylocke has occasionally struggled to maintain her sanity due to her more aggressive nature and new powers. The character Deadpool is famous for his blatant lack of sanity. After Magneto stripped Wolverine of his metal bones, Wolverine began to become increasingly feral throughout most of the mid to late 1990s X-Men comics. The nature of Rogue's powers affecting her sanity due to her retaining the memories of others has been a central plot device on many occasions, most famously retaining Ms. Marvel's psyche throughout most of the 1980s. Most recently Emma Frost's sanity has become fractured ever since Cyclops died in her arms, causing her to declare war against Inhumans. Other characters who have had issues with sanity include Cyclops, Sabretooth, Magik, Quentin Quire, X-23, and Prestige.
Political warfareIn the Marvel Universe, mutant rights is one of the hot controversial political topics and is something that is addressed numerous times in the X-books as a plot device. While some politicians like Valerie Cooper have legitimately tried to help the X-Men, most have made it their mission to discredit the X-Men in order to eliminate mutants once and for all. Senator Robert Kelly began his platform on a strong outspoken anti-mutant sentiment until he changed his mind after being rescued by mutants later on in his career. When Sabretooth's human son Graydon Creed ran for office, the X-Men sent in Cannonball and Iceman to discreetly join his campaign team and find anything on his anti-mutant agenda. This continued until it boiled to a head when his assassination led to "." Some of the issues presented in the comics serve as allegory to modern issues in the real world, such as Lydia Nance suggesting mass mutant deportation.
World of the X-MenThe X-Men exist in the Marvel Universe along with other characters featured in Marvel Comics series and often interact with them. The X-Men/mutant corner of the Marvel Universe has been informally called "X-Universe". For instance, Wolverine was originally an antagonist to the Hulk before joining the X-Men and has ties to other heroes such as Captain America, Black Widow, the Thing, Captain Marvel, Elektra and Spider-Man. Quicksilver and Scarlet Witch are former Brotherhood of Mutants members who joined the Avengers, as have other X-Men characters such as Beast. Rogue got her powers via absorbing Captain Marvel and the latter has also interacted with the X-Men. Kitty Pryde/Shadowcat has been part of the Guardians of the Galaxy and dated Star-Lord, she also served as a mentor to Franklin Richards the mutant son of Mister Fantastic and Invisible Woman of the Fantastic Four. Storm was once the Queen of Wakanda and the wife of Black Panther, as well as a temporary member of the Fantastic Four. Rachel Summers was the girlfriend of Franklin Richards. Iceman and Angel have also joined the original Champions alongside Black Widow, Ghost Rider and Hercules as well as having frequent partnerships with Firestar and Spider-Man as "The Amazing Friends". Sabretooth was originally a villain of Iron Fist before becoming Wolverine's archenemesis. And both the X-Men and the Avengers formed a team called Uncanny Avengers after a conflict over the Phoenix Force. The global nature of the mutant concept means the scale of stories can be highly varied. The X-Men's enemies range from mutant thieves to galactic threats.
Historically, the X-Men have been based in the Xavier Institute of Gifted Youngsters/X-Mansion located in Salem Center, Westchester County, New York, and are often portrayed as a family. The Xavier's School for Gifted Youngsters/X-Mansion is often depicted with three floors and two underground levels. To the outside world, it acted as a higher learning institute until the 2000s, when Xavier was publicly exposed as a mutant at which point it became a known mutant boarding school. Xavier funds a corporation aimed at reaching mutants worldwide, though it ceased to exist following the 2005 "Decimation" storyline. The X-Men benefit from advanced technology such as Xavier tracking down mutants with a device called Cerebro which amplifies his powers; the X-Men train within the Danger Room, first depicted as a room full of weapons and booby traps, now as generating holographic simulations; and the X-Men travel in their Blackbird jet.
Fictional placesThe X-Men introduced several fictional locations which are regarded as important within the shared universe in which Marvel Comics characters exist:
- Asteroid M, an asteroid made by Magneto, a mutant utopia and training facility off of the Earth's surface.
- Avalon, Magneto's space station that served as the primary base for him and his Acolytes to create a mutants-only safe haven after Magneto drastically reverted to his villainous ways.
- Genosha, an island near Madagascar and a longtime apartheid regime against mutants. The U.N. gave control to Magneto until the E Is for Extinction story saw Genosha destroyed via mass genocide.
- Limbo, a hellish dimension heavily populated by demons. Whoever possesses the Soulsword bears control over and can draw power from Limbo. In Extraordinary X-Men, the X-Men made a sanctuary in Limbo called X-Haven their home after Terrigen started making earth uninhabitable for mutants.
- Madripoor, an island in South East Asia, near Singapore. Its location is shown to be in the southern portion of the Strait of Malacca, south west of Singapore.
- Mojoverse, an alternate dimension ruled by the tyrant Mojo focused on creating violent reality entertainment usually featuring captive mutants
- Murderworld, fictional twisted amusement park designed by the Marvel supervillain known as Arcade.
- Muir Island, a remote island off the coast of Scotland. This is primarily known in the X-Men universe as the home of Moira MacTaggert's laboratory.
- Mutant Town, an area in Alphabet City, Manhattan, populated largely by mutants and beset by poverty and crime.
- New Tien, a mutant-run region on the west coast of the United States where mutants outnumber humans. It was created after Hydra took over the United States. Emma Frost secretly leads New Tien by telepathically possessing New Tien's puppet ruler Xorn.
- Savage Land, a preserved location in Antarctica which is home to a number of extinct species, most notably dinosaurs, and strange tribes.
- Shi'ar throneworld Chandilar, the home world of the X-Men's occasional allies The Shi'ar.
- Utopia, Cyclops had Asteroid M raised from the Pacific Ocean off the coast of the San Francisco as a response to the rise of anti-mutant sentiment to form a mutant nation.
- Age of Apocalypse – In a world where Professor X is killed before he can form the X-Men, Magneto leads the X-Men in a dystopian world ruled by Apocalypse. Created and reverted via time travel.
- Age of X - a world in which anti-mutant sentiment became even worse due to a series of events and thus led to the United States government hunting down mutants with Sentinels and leading to "The Decimation" which severely reduced the mutant population and Magneto leads the mutants who are based in Fortress X.
- Days of Future Past – Sentinels have either killed or placed into concentration camps almost all mutants. Prevented by the time-traveling Kate Pryde/Widget.
- House of M – Reality is altered by Scarlet Witch, with her father Magneto as the ruler of Genosha and in which mutants are the dominant group with humans as second-class citizens. 2005's crossover event, it concludes with a reversion to the normal Marvel Universe, albeit with most mutants depowered.
- Marvel 1602 – Mutants are known as the "Witchbreed" in this alternate reality set during the time of The Inquisition. Carlos Javier creates a "school for the children of gentlefolk" to serve as a safe haven and training ground.
- Marvel 2099 – Set in a dystopian world with new characters looking to the original X-Men as history, becoming X-Men 2099 and X-Nation 2099.
- Marvel Noir - The X-Men of this reality are a group of delinquent teenagers led by Charles Xavier who believes that sociopathy is the next step in human evolution.
- Mutant X – Set in a world where Scott Summers was captured along with his parents by the Shi'ar and only Alex escaped, allowing him to be the eventual leader of this Universe's X-Men. The Mutant X universe reimagines Mr. Fantastic, Nick Fury, and Professor X as villains and Doctor Doom and Apocalypse as heroes.
- MC2 - In this alternate future, Jubilee forms the X-People in response to anti-mutant sentiment. Members include Angry Eagle, Simian, Spanner, Torque, Push, Bluestreak, J2, and Wild Thing.
- Time-displaced X-Men - The time-displaced team was introduced as such in All-New X-Men vol. 1 #1, by Brian Michael Bendis and Stuart Immonen, and brought to the present with time travel. They were kept as regular characters, as Bendis intended to explore their reactions to the fate of their adult selves. The team was the main focus of the Battle of the Atom crossover, some months later. Bendis also used them for crossovers with the Guardians of the Galaxy and Miles Morales, that he also wrote. This was one of the few crossovers between the Marvel Universe and the Ultimate Marvel universe; Bendis preferred to write them sparingly. All-New X-Men has a vol. 2 in 2015, by Dennis Hopeless and Mark Bagley. The comic was cancelled after the end of the Inhumans vs. X-Men crossover, and the team was now published in the X-Men Blue comic. The teenager Jean also got a solo series after the end of ResurrXion, by Hopeless and Victor Ibanez, that explored her relation with the Phoenix Force. The teenager Cyclops joins the Champions, a comic book focused on teenager heroes but unrelated to the X-Men mythos. They guest-starred in the Venom comic, in the "Poison-X" arc. The story took the villains from the Venomverse arc and led to the Venomized crossover. The team will be featured in the Extermination crossover.
- Ruins - Although the actual X-Men don't appear alternate versions of its members and villains are shown to have suffered under horrific circumstances. Charles Xavier is a tyrannical President of the United States, Jean Grey is a prostitute, Magneto and Mystique die, Wolverine suffers from poisoning from his adamantium skeleton, Emma Frost heads the Church of the Next Generation and forces children of her followers to undergo surgery, Cyclops as well as Nightcrawler and Kitty Pryde are imprisoned at a Texas jail and Sabretooth is part of a fascist cannibalistic militia based in Oklahoma alongside Bucky Barnes and Jack Monroe.
- Ultimate X-Men – Set in the reimagined Ultimate Marvel universe. The X-Men are younger, wear black and gold uniforms and supernatural/cosmic elements are downplayed. Additionally Colossus is gay unlike his main universe counterpart, Magneto is not a Holocaust survivor and is more villainous, mutants were created by the Super-Soldier Serum, Cable is Wolverine and Kitty Pryde/Shadowcat dated Spider-Man.
- X-Men Forever – An alternate continuity diverging from X-Men, vol. 2 #3, continuing as though writer Chris Claremont had never left writing the series.
- X-Men Noir – Set in the 1930s, with the X-Men as a mysterious criminal gang and the Brotherhood as a secret society of corrupt cops.
- – A possible ending to the X-Men's early 2005 status quo.
- X-Men '92 – Follows "Secret Wars", the X-Men of the 1992 TV Series, received their own comic book series.
Reflecting social issues
- Racism: Although this was not initially the case, Professor X has come to be compared to civil rights leader Martin Luther King, Jr. and Magneto to the more militant Malcolm X. The X-Men's purpose is sometimes referred to as achieving "Xavier's dream", perhaps a reference to King's historic "I Have a Dream" speech. X-Men comic books have often portrayed mutants as victims of mob violence, evoking images of the lynching of African Americans in the age before the civil rights movement. Sentinels and anti-mutant hate groups such as Friends of Humanity, Humanity's Last Stand, the Church of Humanity, and Stryker's Purifiers are thought to often represent oppressive forces like the Ku Klux Klan giving a form to denial of civil rights and amendments. In the 1980s, the comic featured a plot involving the fictional island nation of Genosha, where mutants are segregated and enslaved by an apartheid state. This is widely interpreted as a reference to the situation in South Africa at the time.
- Anti-Semitism: Explicitly referenced in recent decades is the comparison between antimutant sentiment and anti-Semitism. Magneto, a Holocaust survivor, sees the situation of mutants as similar to those of Jews in Nazi Germany. At one point he even utters the words "never again" in a 1992 episode of the X-Men animated series. The mutant slave labor camps on the island of Genosha, in which numbers were burned into mutant's foreheads, show much in common with Nazi concentration camps, as do the internment camps of the classic "Days of Future Past" storyline. In the third X-Men film, when asked by Callisto: "If you're so proud of being a mutant, then where's your mark?" Magneto shows his concentration camp tattoo, while mentioning that he will never let another needle touch his skin. In the prequel film ', a fourteen-year-old Magneto suffers Nazi human experimentation during his time in the camps and witnesses his mother's death by gunshot.
- Diversity: Characters within the X-Men mythos hail from a wide variety of nationalities. These characters also reflect religious, ethnic or sexual minorities. Examples include Kitty Pryde/Shadowcat, Magneto and Sabra who are of Jewish descent. Dust and M who are Muslim, Nightcrawler who is a devout Catholic. Neal Shaara/Thunderbird who is Hindu. Jubilee is Chinese American, Gambit is born to Cajun parents from New Orleans, Louisiana and Rogue is from Caledecott County, Mississippi both of whom are Southerners. Warpath along with his deceased brother the first Thunderbird are Native Americans of Apache descent. Storm represents two aspects of the African diaspora as her father was African American and her mother was Kenyan. Karma was portrayed as a devout Catholic from Vietnam, who regularly attended Mass and confession when she was introduced as a founding member of the New Mutants. This team also included Wolfsbane, Danielle Moonstar, Cannonball, and was later joined by Magma. Different nationalities included Wolverine, Aurora, Northstar, Deadpool and Transonic from Canada; Colossus and Magik from Russia; Banshee and Siryn from Ireland; Dust from Afghanistan; Psylocke, Wolfsbane and Chamber from the United Kingdom; Sunfire, Armor, Surge and Zero from Japan; Sunspot from Brazil; M from Monaco; Nightcrawler from Germany; Sabra from Israel; Omega Sentinel, Neal Shaara, Kavita Rao and Indra from India; Velocidad from Mexico; Oya from Nigeria; Primal from Ukraine; etc.
- LGBT themes: Some commentators have noted the similarities between the struggles of mutants and the LGBT community, noting the onset of special powers around puberty and the parallels between being closeted and the mutants' concealment of their powers. In the comics series, gay and bisexual characters include Anole, Bling!, Destiny, Karma, Mystique, Psylocke, Courier, Northstar, Graymalkin, Rictor, Shatterstar, Shade, the Ultimate version of Colossus and later Iceman after revealing that he is a mutant; the comics version of the character was then revealed to be gay in 2015. Transgender issues also come up with shapechangers like Mystique, Copycat, and Courier who can change gender at will. It has been said that the comic books and the X-Men animated series delved into the AIDS epidemic with a long-running plot line about the Legacy Virus, a seemingly incurable disease thought at first to attack only mutants. In the film , Hank McCoy is asked by his CIA boss why he never disclosed his mutant identity, and his response was "you didn't ask, I didn't tell".
- Communism and socialism: Occasionally, undercurrents of the real-life "Red Scare" are present or the events of the Red Scare in history are alluded to. Senator Robert Kelly's proposal of a Mutant Registration Act is similar to the efforts of United States Congress to try to ban communism in the United States. In the 2000 X-Men film, Kelly exclaims, "We must know who these mutants are and what they can do," even brandishing a "list" of known mutants.
- Religion: Religion is an integral part of several X-Men storylines. It is presented as both a positive and negative force, sometimes in the same story. The comics explore religious fundamentalism through the person of William Stryker and his Purifiers, an antimutant group that emerged in the 1982 graphic novel . The Purifiers believe that mutants are not human beings but children of the devil, and have attempted to exterminate them several times, most recently in the "Childhood's End" storyline. By contrast, religion is also central to the lives of several X-Men, such as Nightcrawler, a devout Catholic, and Dust, a devout Sunni Muslim who wears an Islamic niqāb.
- Subculture: In some cases, the mutants of the X-Men universe sought to create a subculture of the typical mutant society portrayed. The Morlocks, though mutants like those attending Xavier's school, hide away from society within the tunnels of New York. These Morlock tunnels serve as the backdrop for several X-Men stories, most notably The Mutant Massacre crossover. This band of mutants illustrates another dimension to the comic, that of a group that further needs to isolate itself because society won't accept it. In Grant Morrison's stories of the early 2000s, mutants are portrayed as a distinct subculture with "mutant bands," mutant use of code-names as their primary form of self-identity, and a popular mutant fashion designer who created outfits tailored to mutant physiology. The series District X takes place in an area of New York City called "Mutant Town." These instances can also serve as analogies for the way that minority groups establish subcultures and neighborhoods of their own that distinguish them from the broader general culture. Director Bryan Singer has remarked that the X-Men franchise has served as a metaphor for acceptance of all people for their special and unique gifts. The mutant condition that is often kept secret from the world can be analogous to feelings of difference and fear usually developed in everyone during adolescence.
- Genocide''': Genocide and its psychological after-effects, primarily survivor guilt, are recurring elements in some of the most significant X-Men story arcs. Magneto was a survivor of The Holocaust and witnessed the genocide of his people, severely scarring him emotionally and leaving him with a strong distrust of humanity. Because of this he constantly toes the line between ally and enemy of the X-Men. The iconic Days of Future Past story line saw an alternate future where Sentinels committed genocide on most of the world's mutants. In Rachel Summers' original timeline, she was captured by humans and turned into a 'hound' used to hunt down other mutants in order to capture and kill them, leaving her extremely traumatized by the experience and knowledge that she unwittingly assisted in the genocide of her own people. Bishop's childhood consisted of him being trapped in a mutant concentration camp, leaving him so emotionally scarred as an adult that upon returning to the past he was prepared to. When Cassandra Nova committed genocide on Genosha, the event left both Emma Frost and Polaris traumatized by survivors guilt as they were amongst the limited few survivors. While taking some time off in Germany, Nightcrawler witnessed the genocide of numerous mutants. The event left him as an emotional shell of who he used to be because of the trauma of what he witnessed until he had psychic therapy with Jean to help him cope. Other characters who have either committed or have survived genocide include Mystique, Callisto, Apocalypse, Onslaught, Bastion, Mister Sinister, Hope Summers, Cable, and the Phoenix Force.