15 Most Insanely Overpowered Superheroes In The Marvel Universe

15. Deadpool

In the grand history of comic book makers ripping each off, no character has done so much as a second generation clone as Deadpool. Initially imagined as Marvel's barbed take on DC's Deathstroke, the Merch with a Mouth is a law unto himself, breaking the fourth wall and generally being as R-Rated as possible. Unfortunately, it all seems to have worked a little too well.

As interest in Deadpool peaked, Marvel decided his cool factor needed an injection of steroids, and that translated into making him essentially immortal. His healing factor is unprecedented: he is immune to most things, he doesn't age, and he can regrow entire limbs, including his head. Even the undead can't survive the removal of their heads.

Were it just a mater of his head being returned and grafted back to his body, it wouldn't be that much of an issue, but at one point he regrew an entirely new head and brain. Oh, and he's got a magical sack just to really piss anyone seeking a little realism off even more and to ensure any possible chance of defeating him evaporates entirely.