Grizzly is the name of four unrelated fictional characters appearing in American comic books published by Marvel Comics. The first is a wild west villain, the second is an A.I.M. Agent, the third is a foe of Spider-Man, and the fourth is a mutant and member of Six Pack.

A.I.M. is a fictional criminal organization appearing in American comic books published by Marvel Comics. Created by Stan Lee and Jack Kirby, it first appeared in Strange Tales #146. A.I.M. is primarily depicted as a think tank of brilliant scientists dedicated to world domination through technological means.