Giant-Size X-Men #1, 1975. Art by Gil Kane & Dave Cockrum.]] Publisher Marvel Comics First appearance The X-Men #1 (September 1963) Created by Stan Lee Jack Kirby Base(s) of operations Xavier Institute for Higher Learning Roster See: List of X-Men teams The X-Men are a team of fictional comic book superheroes in the Marvel Comics universe. Created by Stan Lee and Jack Kirby, they debuted in The X-Men #1, published in September 1963. The X-Men are fictitious mut
[source http://en.wikipedia.org/wiki/X-Men]