Comeback King!
Or Queen.
Which hero has come back from the lowest possible point. I'm not talking about who's channeled the power of heart the most mid-fight and beaten a Skyfather with a lighter, but rather what hero has managed to recover from a really, really low point?
I'll start off with Constantine. He recovered from some pretty hard times after he and his girl broke up the first time. Living on the streets, barely getting by and severing just about any relation with his past friends/family.