Mister Sinister

First Appearance: Uncanny X-Men #221 (September, 1987)
Base of Operations: Many bases throughout the world including his State Home for Foundlings and the Center for Homo Superior Medical Care.
Occupation: Geneticist, Criminal, biologist and mutant-supremacist
Group Affiliation:: Marauders (founder), Nasty Boys (founder); formerly Weapon X, Third Reich