Hero, neh? I think perhaps Yagami Light from Death Note, or someone along those lines. Though really, it's how you interpret that word. Light, Lelouch, etc. They have their own strong sense of "justice". It might not go through your head how justice is killing people "criminals" to bring peace or make the world a better place. But in my opinion, the world might be rotten -no offense meant- but it is what humanity is I suppose. Truthfully, I do admire such characters. After all, what is a story without villains?