[Protoclown]

MarioRPG, Kingpin was originally a villain of Spider-Man's, but he was best put to use by Frank Miller during his Daredevil run.

And the Iron Man as a supervillain thing was a joke based on how much of a raging dick he's been since Civil War. He's basically done the kind of shit that supervillains would do but totally gets a free pass on that shit.