Mastermind vs Callisto Facts
Creator
Jack Kirby, Stan Lee
Chris Claremont, Paul Smith
Universe
Earth-616
Earth-616
In Comics
The X-Men #4 - The Brotherhood of Evil Mutants
The Uncanny X-Men #169 - Catacombs
Citizenship
American
American
Marital Status
Single
Single
Occupation
Not Available
-
Base
Not Available
The Xavier Institute, Salem Center, Westchester County, New York State, (former) The Alley (beneath Manhattans surface), X-Factor Is sentient starship
Relatives
Not Available
Not Available