9. Ant-Man (Eric O'Grady)
Just because you wear the suit, doesn't make you a hero.
Eric O'Grady is not a good person and the writers knew this when they created him. They wanted to play around with the idea of what would happen if someone with questionable morals had superpowers and that's when they came up with The Irredeemable Ant-Man series.
Eric was a low-level S.H.I.E.L.D. agent with a habit of lying, cheating and pretty much doing anything to get ahead. So, when the opportunity arose to steal a new prototype of the Ant-Man suit, he took it. Does he use his new powers to, at the very least, do some good?
Nope, he instead he uses it to mostly flaunt his status as a "superhero" as much as he can. He commits a bunch of thefts and also watches women while they shower and undress. You'd think that he would have some level of conscious that tells him his actions are wrong but you'd be wrong again. He also has an unnatural need to be liked.
When doing downright despicable things, he constantly worries if other people and heroes will still accept him as a hero. He does eventually vow to become a hero after a long arc but that doesn't excuse trying to sleep with your recently deceased best friend's girlfriend on top of his grave. Oh yeah, he did that.