You know why people hate you? It's not because you're Mutants. It's because you're all a bunch of *&!@£'s!
~ Spider-Man

Mutants are creatures or people born or created with unique genetic defects that result in highly abnormal traits, often superhuman abilities. Villains who fit this description can be listed here.

Not to be confused with genetically or mechanically altered villains, who start life normal, but are changed later.