Love them or hate them, here are 10 Marvel heroes who became villains ... As she flailed her uncontrollable legs around, even Spidey felt bad for the villain. Turner D. Century.

Without a doubt, these 10 bad guys are the worst of the worst. Aldrich Killian (Guy Pearce) is madness personified. The main villain of Iron Man 3 founded Advanced Idea Mechanics and thought it ...