He is often depicted as kind, empathetic and wise in his ability to relate to his mutant brethren, and believes in a future where his race is fully welcomed into society at large.

In the distant future, Xavier would end up accidentally killing a large number of mutants, including several X-Men, due to a telepathically-induced seizure, inadvertently putting his own race at risk of extinction, and leaving him to be cared for by a world-weary James "Logan" Howlett.

The Wolverine is in turn assisted by Xavier in escorting a young mutant named Laura across the Canadian border as they are being pursued by the Reavers, led by Donald Pierce and Zander Rice.

While settling down on their objective, Xavier is unceremoniously murdered by X-24, a genetically enhanced clone of Logan created by the Alkali Corporation and Transigen Project following Laura's escape.

Stewart held the Guinness World Record for "longest career as a live-action Marvel character" from 2017 until 2021 alongside co-star Hugh Jackman, and outright from 2022 until 2024.

[4][5] Professor Xavier's character development was also inspired by Martin Luther King Jr., as a contrast to the views of his longtime antagonist and friend, Erik Lehnsherr, whose approach is considered more comparable to that of Malcolm X.

The success of the Star Trek: The Next Generation TV and film franchises had typecast Stewart as his character, Jean-Luc Picard, and obtaining other roles became difficult.

[12] Stewart reprises his role in the Marvel Cinematic Universe (MCU) film Doctor Strange in the Multiverse of Madness (2022) as an alternate version of Xavier who is a member of the Illuminati.

He earns his doctorate after doing research on genetic mutation at Oxford, which brings him to the attention of CIA agent Moira MacTaggert (Rose Byrne).

Once the team is assembled, Shaw and the Hellfire Club attack the CIA facility, kill all the human personnel including one of Xavier's recruits, and persuade another to defect.

Xavier retreats with the survivors to his Westchester, New York mansion to train them as an independent team of operatives to prevent nuclear war between the US and USSR as a result of the Cuban Missile Crisis.

As an explanation, Xavier can be seen walking in X-Men: Days of Future Past, who clarifies that he can do it by creating an illusion that he is standing in various scenes, when in reality, the character is only present by telepathic projection.

[16][17] Xavier is first introduced in X-Men, portrayed by Patrick Stewart, when he sends Storm (Halle Berry) and Cyclops (James Marsden) to rescue Wolverine (Hugh Jackman) and Rogue (Anna Paquin) from Sabretooth (Tyler Mane).

Upon learning that the mutant Nightcrawler (Alan Cumming) attacked the President of the United States, Xavier sends Storm and Jean Grey (Famke Janssen) to bring him in for questioning.

He is left in the room with Jason Stryker (Michael Reid McKay), William's son and a powerful illusionist who had previously been a student at Professor X's school.

In X-Men: The Last Stand, Xavier first appears in a flashback, with Stewart digitally de-aged, when he and Magneto pick up a young Jean Grey as their first student.

When Jean is discovered alive, Xavier sedates her and tells Wolverine that he had kept her powers in check with mental barriers since she was a child, resulting in her developing a second personality known as "The Phoenix."

James McAvoy and Patrick Stewart reprise their roles as the younger and older Charles Xavier / Professor X respectively, in X-Men: Days of Future Past,[19] which was released on May 23, 2014.

[20][21] In the sequences set in 1973, Xavier is seen to be older and bitter, having given up on his dream of peaceful coexistence between humans and mutants after the failure of his school, and leading a reclusive life as a result.

[22] In addition, Xavier is living under the care of McCoy, is impolite to people, uses profane language, occasionally behaves violently, and drinks heavily to cope with his failures.

However, Kitty explains that the process of projecting someone's mind into the past would be too psychologically traumatic, even for Xavier to survive it, prompting Wolverine to volunteer to go back instead as his power would allow him to recover from the damage inflicted.

Although Magneto nearly triggers a mass slaughter when he takes control of the Sentinels during their demonstration in Washington, D.C., Mystique knocks him out in time, followed by Xavier appealing to her to not assassinate Trask.

He has started teaching the young Jean Grey (Sophie Turner), trying to help her develop more gradual control of her powers without the telepathic blocks of the original timeline.

At the end of the film, Xavier is bald and wearing his usual suit as he sits outside the Danger Room, watching the new X-Men prepare for training under Mystique as their new field leader.

When the film begins, Xavier adopts a young Jean Grey after her psychic powers cause a car accident that kills her mother and her resentful father abandons her.

The film then jumps to the early 1990s, the X-Men are enjoying a period of acceptance as public heroes, to the point that the President calls them for assistance in dealing with a shuttle accident, although Mystique expresses concern that Xavier is more focused on their current celebrity status than his original goal of coexistence between mutants and humans.

The situation becomes dangerous when Jean absorbs a mysterious space anomaly that almost destroys the shuttle, elevating her already-formidable powers and unlocks her suppressed memories.

After Wade Wilson / Deadpool is brought back to the X-Mansion after attempting suicide over his fiancee Vanessa's death, he loudly questions and remarks to Colossus where the other mutants are, as he always only sees him or Negasonic Teenage Warhead at the mansion.

Xavier senses the presence of another mutant in Texas named Laura (Dafne Keen) who has a lot in common with Logan, and the two decide to help keep her safe from Pierce (Boyd Holbrook) and the Reavers who are trying to capture her.

However, when the Reavers catch up to them and enter their hotel room, Xavier has another seizure, causing him to telepathically freeze everyone in the area until Logan gives him a suppressant.