Publication information Publisher Marvel Comics First appearance X-Men #1 (Sep. 1963) Created by Stan Lee Jack Kirby In-story information Alter ego Charles Francis Xavier Species Human Mutant Team affiliations X-Men Illuminati Genoshan Excalibur Cadre K Brotherhood of Mutants Shi'ar Imperium Starjammers The Twelve Defenders Notable aliases Onslaught, Consort-Royal, Founder, X, Warlord, Entity Abilities Genius-level intellect Telepathy Empathy Mind reading and control Memory alteration & erasure Mental bolts Psionic blasts Induced paralysis Illusion casting Great tactician and strategist Astral projection Eidetic memory