Charles Francis Xavier was born in New York City to the wealthy Dr. Brian Xavier, a well-respected
nuclear scientist, and Sharon Xavier. The family lives in a grand mansion estate in
Westchester County because of the wealth his father's nuclear research has brought. With help from his superhuman powers and natural genius, Xavier becomes an excellent student and athlete, though he gives up the latter, believing his powers give him an unfair advantage. He enters
Bard College aged 16 and graduates with a bachelor's degree in biology in only two years. In graduate studies, he receives
Ph.D.s in
Genetics,
Biophysics,
Psychology, and
Anthropology with a two-year residence at
Pembroke College,
University of Oxford. He receives an
M.D. in
Psychiatry while spending several years in London. He is appointed
adjunct professor at
Columbia University. At
graduate school, Xavier meets
Moira Kinross, a fellow genetics student with whom he falls in love. They agree to get married, but soon, Xavier is drafted into the
Korean War. While Xavier is serving in the war, Moira breaks up with him. Saddened, Xavier begins traveling around the world. In a strange town near the Himalayas, Xavier encounters an alien called
Lucifer, the advance scout for an invasion by his race, and foils his plans. In retaliation, Lucifer drops a stone block on Xavier, paralyzing his legs. After Lucifer leaves,
Sage hears Xavier's telepathic cries for help and rescues him, beginning a long alliance between them. Xavier is brought to a hospital in India, where he is cared for by
Amelia Voght during his recovery. Xavier establishes his family mansion as Xavier's School for Gifted Youngsters, which provides a safe haven for mutants and teaches them to master their abilities. In addition, he seeks to foster mutant-human relations by providing his superhero team, the
X-Men, as an example of mutants acting in good faith. Xavier's first five students are
Cyclops,
Iceman,
Angel,
Beast, and
Marvel Girl who become the original X-Men. Xavier forms a psychic bond across galaxies with Princess
Lilandra Neramani of the
Shi'ar empire, with the two falling in love when they meet in person. When the X-Men fight the alien
Brood, Xavier is captured by them and implanted with a Brood egg, which places Xavier under the Brood's control. The X-Men and the
Starjammers are unable to remove the Brood from Xavier, forcing them to transfer his consciousness into a cloned body. This new body possesses functional legs, though the
psychosomatic pain Xavier experienced after living so long as a paraplegic takes some time to subside. A reformed Magneto is arrested and put on trial. Xavier attends the trial to defend his friend.
Andrea and Andreas Strucker, the children of presumed dead Baron von Strucker, crash the courtroom to attack Magneto and Xavier. Xavier is seriously injured and leaves Earth with the Shi'ar to be healed, leaving leadership of the X-Men to Magneto. While in space, Xavier jois the Starjammers and becomes Lilandra's consort. After escaping from
Skrull forces, Xavier returns to Earth and reunites with the X-Men. In a battle with the
Shadow King, in the "
Muir Island Saga", Xavier's spine is shattered, returning him to his former paraplegic state. In the "
Age of Apocalypse" series, Xavier is killed while saving Magneto from an attack by Legion. Xavier's death results in a dystopian alternate timeline where Magneto founded the X-Men and sought human/mutant co-existence in Xavier's name.
Apocalypse awakens decades before the world is ready for him, resulting in Apocalypse conquering most of Earth. Magneto's X-Men travel back in time and save Xavier, restoring the main universe. Professor X is for a time the unknowing host of the evil psionic entity
Onslaught, who was created from the combined repressed emotions of Professor X and Magneto. Xavier is left without his telepathy and, overcome with guilt, leaves the X-Men and is incarcerated for his actions. He later returns to the X-Men after the events of
Operation: Zero Tolerance. Xavier's twin
Cassandra Nova, whom Xavier attempted to kill while they were both in their mother's womb, orders a group of rogue
Sentinels to destroy the independent mutant nation of
Genosha. Magneto, Genosha's leader, appears to die along with the vast majority of the nation's inhabitants. Nova then takes over Xavier's body and attacks the Shi'ar empire. The X-Men restore Xavier, but Lilandra, believing that too much disaster has come from the Shi'ar's involvement with the X-Men, annuls her marriage to Xavier. During this period, a mutant named
Xorn joins the X-Men and uses his healing powers to heal Xavier's legs. After being publicly outed as a mutant by Nova, Xavier makes speeches to the public about mutant tolerance. He also founds the
X-Corporation, a worldwide organization, to watch over mutant rights and help mutants in need. After Xavier Institute student
Quentin Quire and members of his gang start a riot at the Xavier Institute during an open house at the school. As a result, Quire and two other students are killed. Uncertain about his dream's validity, Xavier announces that he will step down as headmaster and be succeeded by Jean Grey. After Jean Grey is killed by Xorn, Xavier leaves the school to Cyclops and
Emma Frost.
House of M In the storyline
House of M,
Scarlet Witch creates an alternate universe where mutants are dominant rather than humans, with Professor X having apparently been killed. After
Layla Miller restores the memories of the original universe for some of the X-Men and Avengers, they head to Genosha, where they discover that Magneto has erected a memorial garden for Xavier commemorating his death. Scarlet Witch uses her powers to restore reality and, as a slight against her father, causes most mutants to
lose their powers. With reality restored, Xavier is still missing and the X-Men are unable to detect him with
Cerebro.
Deadly Genesis Cyclops' and Havok's brother,
Vulcan, is revived by the energy released as a result of the "House of M" incident. Xavier, now depowered but able to walk in the wake of "House of M", reveals that he had gathered and trained another team of X-Men sometime between the original team and the new X-Men team introduced in
Giant-Size X-Men. Like the "Giant Size" X-Men team, McTaggert's former students were sent to rescue the original X-Men from
Krakoa. After rescuing Cyclops, McTaggert's former students were seemingly killed, with Vulcan surviving. In spite of Cyclops' feelings, Xavier forms a new team with
Havok and
Darwin. Xavier seeks to confront Vulcan before he can enact his vengeance against the Shi'ar empire, which killed Vulcan's mother. While en route to the Shi'ar homeworld, Xavier is abducted and is later thrown into the
M'Kraan Crystal by Vulcan, restoring his powers.
Messiah Complex During the
Messiah Complex storyline, Xavier detects a new mutant so powerful it fries Cerebra's system. He asks Cyclops to send out a team to find out about the mutant. Once the team has come back empty handed, he argues with Scott for not telling him about the team he deployed to find former Acolytes. Scott tells him outright that he does not need him to run the X-Men anymore. This upsets Xavier and annoys him later on when he overhears Cyclops briefing
X-Factor on the situation. He also approaches the
New X-Men in an attempt to help them figure out a non-violent way to help against the
Purifiers, but is quickly rebuked by
Surge, who questions where he was when they were getting attacked the first time, and that they did not need to learn from him. Charles questions Cyclops' decision to send X-Force to hunt down his own son,
Cable, in front of the students. Cyclops then tells Xavier that he is a distraction that will keep getting in the way and that he must leave the mansion. Xavier is contacted by Cable, who lost the mutant newborn to the traitorous actions of
Bishop, who in turn lost the child to the
Marauders, and tells him that he is the only one who can help Cable save the future. In the ensuing fight, Xavier is accidentally shot in the head by Bishop and rendered comatose.
Exodus, Magneto, and
Karima Shapandar manage to save Xavier's life, but he is left partly amnesiac. Xavier parts company with Magneto and Karima to try to regain his lost memories by visiting people from his past.
Dark Reign During the
Dark Reign storyline, Professor X convinces Exodus to disband the Acolytes. A
H.A.M.M.E.R. helicopter arrives and from inside appears
Norman Osborn, who wants to talk to him. During the
Dark Avengers' arrival in San Francisco,
Mystique poses as Xavier and denounces Cyclops' actions. The real Xavier is imprisoned on
Alcatraz and slowly being stripped of his powers. Xavier moves to
Asteroid M, rechristened Utopia, along with the rest of the X-Men, X-Club, and mutant refugees and is also allowed to join the Utopia lead council (Cyclops, Storm,
Namor, Iceman, Beast,
Wolverine and Emma Frost). While he no longer continues to openly question every move that Cyclops makes, he is still concerned about some of his leadership decisions. Xavier had wanted to return to the mainland to clear his name, but in the aftermath of Osborn declaring Utopia as a mutant detention area, Cyclops refused to let him leave, stating that it would be a tactical advantage to have him as an ace in the hole in case the need arose. To that end, he has kept Xavier out of the field and instead relied on Frost,
Psylocke and the
Stepford Cuckoos respectively for their own psionic talents. While attending the funeral of Yuriko Takiguchi, Magneto arrives at Utopia, apparently under peaceful motives. Xavier does not believe it, and attacks Magneto telepathically, causing Cyclops to force him to stand down. He later apologizes to Magneto for acting out of his old passions from their complicated relationship, which Magneto accepts.
Second Coming During the
Second Coming storyline, Professor Xavier is seen on Utopia delivering a eulogy at
Nightcrawler's funeral. Like the other X-Men, he is deeply saddened by Nightcrawler's death and anxious about the arrival of Cable and Hope. Xavier is seen using his powers to help his son Legion control his many personalities and battle the
Nimrods. At the conclusion of Second Coming, Professor X is seen surveying the aftermath of the battle from a helicopter. As Hope descends to the ground and cradles Cable's lifeless arm, Xavier reflects on everything that has transpired and states that, while he feels that Hope has indeed come to save mutant kind and revive his dream, she is still only a young woman and will have a long and difficult journey before she can truly achieve her potential.
Avengers vs. X-Men During the "
Avengers vs. X-Men" storyline, the Phoenix Force is split into five pieces and bonded with Cyclops, Emma Frost, Namor,
Colossus and
Magik (who become known as the Phoenix Five). Eventually, Cyclops and Frost come to possess the full Phoenix Force, and Professor X is instrumental in confronting them both, and dies in the ensuing battle with Cyclops. After confronting the Shadow King in the astral plane, Xavier is returned to the real world in the body of
Fantomex and later builds himself a new body.
Dawn of X X has since made his presence known to his former students and reveals his new plan for all mutantkind. Now clad in a Cerebro-like helmet and able to walk again, Xavier has apparently abandoned his dream for peaceful coexistence and made Krakoa into a sovereign nation state for mutants. He then leads the X-Men into planting in seeds in strategic locations around the world and Mars, which, overnight, grow into massive plantlike "Habitats" that act as extensions of Krakoa. Through the advancement of mutant technology combined with Krakoa's unique abilities as a living mutant island, Professor X and the X-Men have embassies around the world. Also through this combination of technology and mutant power, Xavier have developed three drugs that could change human life – a pill that extends human life by five years, an adaptable universal antibiotic, and a pill that cures mental disease. In exchange for recognizing the sovereignty of Krakoa, Professor X will give these drugs to mankind, with mutants living in peace on the island. Xavier is revealed to have upgraded Cerebro with the help of Forge, which is now able to copy and store the minds of mutants in a database. The Five, a group of mutants consisting of
Hope Summers,
Goldballs,
Elixir, Proteus, and
Tempus combine their abilities to resurrect deceased mutants. These resurrection protocols are used to revive Xavier after he is killed by
HALO attackers. ==Powers and abilities==