History: Charles Xavier is the son of nuclear researcher Brian Xavier and his wife Sharon. After Brian Xavier's death, Sharon married his colleague Dr. Kurt Marko, whose son by a previous marriage, Cain, bullied the young Charles.

Charles' telepathic powers began emerging when he was still a boy, and as he grew older he learned to control them. A brilliant student, he entered graduate studies at England's Oxford University, where he met and fell in love with a young Scotswoman named Moira MacTaggert. They planned to be married, but after finishing his work at Oxford, Xavier was drafted and sent to Asia.

There Xavier and Cain Marko served in the same unit. Xavier witnessed how Marko found the mystical ruby in the temple of Cyttorak that transformed him into the superhuman Juggernaut.

Deeply depressed when Moira broke off their engagement without explanation, Xavier began traveling abroad after leaving the army. While in Cairo, Egypt he battled Amahl Farouk, the Shadow King, the first evil mutant he had ever met. This meeting led to Xavier's decision to devote his life to protecting humanity from evil mutants and safeguarding innocent mutants from human oppression.

Xavier next went to Israel, where he fell in love with Gabrielle Haller and became friends with a man calling himself Erik Magnus Lehnsherr. Lehnsherr would years later become his greatest enemy and rival, Magneto. Xavier was unaware when he left Israel that Haller was pregnant with his son, who would become the mutant known as Legion.

University and in London. He renewed his friendship with Moira MacTaggert, who was now a renowned geneticist, and they began discussing the idea of founding a school for mutants.

Xavier's first student was the 11 year-old Jean Grey, who had been traumatized when she telepathically experienced the emotions of a dying friend. Xavier helped Jean recover and taught her to use her telekinetic powers.

Xavier later met with Fred Duncan, an F.B.I. agent investigating the growing number of mutants. Xavier told Duncan of his plan to locate young mutants and enroll them in his "School for Gifted Youngsters" using his ancestral mansion home as a base to train them to use their powers for humanity's benefit. Over the following months Xavier assembled his original team of "X-Men:" Cyclops, Iceman, Angel, Beast, and Jean Grey, who took the name Marvel Girl.

Years later, when most of his original students were captured by the mutant Krakoa, Xavier recruited a new team of X-Men, including Banshee, Colossus, Nightcrawler, Storm, and Wolverine. In subsequent years he added more members to the X-Men, such as Rogue and Shadowcat.

Lilandra, princess of the alien Shi'ar race, came to Earth to ask Xavier for his help against her tyrannical brother D'ken. Xavier and Lilandra fell in love, and for a time he lived on Chandilar, the Shi'ar throneworld, as her consort.

After the apparent deaths of the second team of X-Men, Xavier, encouraged by MacTaggert, took on a new class of mutant students, whom he named the New Mutants.

The alien race called the Brood had secretly implanted an egg within Xavier's body. MacTaggert and the X-Men's spacefaring allies, the Starjammers, saved Xavier by transferring his mind into a newly cloned, somewhat younger body in which he could once again walk. But in subsequent months Xavier suffered physical injuries and psychic strains that left him on the brink of death. Lilandra and the Starjammers took him into outer space where they used Shi'ar technology to restore him to health.

After an extended sojourn in space with the Starjammers, Xavier finally returned to Earth. Both the original and second teams of X-Men reassembled under his leadership, along with new recruits like Gambit and Jubilee. Xavier led the X-Men against the Shadow King, only to have his spine broken in battle, leaving him crippled and confined to a wheelchair once more.

Since the X-Men were all now highly trained adults, Xavier renamed the school in his mansion The Xavier Institute for Higher Learning. He took control of a private school, the Massachusetts Academy, and made it the new School for Gifted Youngsters, where yet another new class of young mutants, Generation X, was taught.

In a major battle with Magneto, Xavier lost his temper and used his mental powers to shut down Magneto's conscious mind. In the process Xavier's mind was inadvertently infected by the evil within Magneto's psyche. The result was that the dark sides of Magneto's and Xavier's minds combined and physically manifested themselves as the nearly invincible entity called Onslaught, who usurped Xavier's psionic powers. America's greatest super heroes narrowly defeated Onslaught, who appeared to perish. However, to ensure that Xavier never again spawned a being like Onslaught, Dr. Valerie Cooper of the United States government took him into custody. Although Xavier was willing to serve as a prisoner of the United States government, he was appalled when it turned him over to the custody of Bastion, head of the anti-mutant Operation: Zero Tolerance.

After being liberated from the Hulkbuster base by the Brotherhood of Evil Mutants, he battled an out-of-control Cerebro, which had been manipulated by Bastion. After it was defeated, Xavier returned to the X-Men.

Xavier recently had another clash with Magneto, but it was not nearly as intense as the one before it. He could do nothing to prevent Magneto from taking over Genosha.

Current Status: Xavier has just returned from a trip to the past and is starting to have doubts about his dream's validity.