Definitely Deadpool, he's the only Marvel character to consistantly break down the fourth wall (talk to/ interact with the reader). Also because of his insane healing factor (like Wolverine), he survived getting his head cut off. And because he's a total ninja, like Batman with a different costume. (and a split personality)
Well. Since I'm a girl I'd probably choose-Wonder Woman, Storm (from x-men), Elektra, and other female superhumans like Aurora. It doesn't really matter. Just that they good in the end or some part in their life.
I am stuck between Iron Man and Deadpool.. Both are egotistical smart***es with great sense of humor. Oh and the high tech suit and advanced weaponry and teleportation and regeneration and etc of course