"If you think I've evolved beyond the joys of murder, you'd be wrong!" —M.O.D.O.K. M.O.D.O.K is a villain from Marvel Comics, often appearing as an enemy of Iron Man, Captain America, and the Avengers. His name stands for Mental Organism Designed Only for Killing. He made his first debut in Marvel vs. Capcom 3: Fate of Two Worlds in the Marvel vs. Capcom series.