Source: comicvine.gamespot.com

4. Madcap

Madcap is a goofy old Captain America villain who dresses funny. He has the power to make people act crazy, along with a healing factor.

Or, at least, that’s what I WOULD say if I’d written this list a couple months ago. Thanks Gerry Duggan, for making this entry WAY more interesting.

Madcap resurfaced as part of a major retcon in the recent Deadpool Annual. The issue explained (and thankfully got rid of) the dual voices in Deadpool’s head that were introduced in Daniel Way’s long run on the character. Turns out, Deadpool and Madcap bumped into each other and got turned to ash by one of Thor’s lightning bolts. When Deadpool healed up, he absorbed Madcap into him and just never really noticed, because Deadpool is Deadpool and Deadpool is a jerk.

Eventually, they were separated and Madcap decided to work with Wade on his new “Mercs of Money” venture. Except…it turned out that (spoilers) Madcap was actually just in it to disgrace and murder Deadpool. You see, after all that time as a voice in Wade’s head, Madcap was driven violently insane.

Deadpool is kind of a terrible person, that’s the appeal of the character, but if you spent four years trapped in his head seeing everything he did, you would probably also realize the logic in removing him from this planet for good.