10. Norman Osborn
Norman Osborn is yet to make an official entry into the Marvel Cinematic Universe. But he is a big name in the Marvel Comics. In a storyline called What If? Infinity – Dark Reign, Norman employs a group of super villains to steal the Infinity Stones. He then traps Spiderman in a time loop to relive Gwen Stacy’s death over and over again. When his resurrected father does not get impressed, Norman erases him (and accidentally himself) from existence.