Because you like Aiden Pearce in Watch Dogs
Ethan Hunt's mission, should he chose to accept it, is to save the world from impossible threats. See them in Mission: Impossible.
Jack Bauer is a terrorist fighter who is scared of nothing and no one. The clock is ticking! See them in 24.
Greenpeace? No, this brave eco-terrorist is waging Greenwar. See them in Final Fantasy Series.
A crooked cop, Harvey Bullock is the product of a not-so-just criminal justice system. See them in Gotham.
Not only could Hellboy avenge your death, he'd also have a sense of humor about it and not let it ruin the rest of his night. See them in Hellboy.
A powerful mob boss, Vito Corleone is always making offers people can't refuse. See them in The Godfather.
Bad-ass Rayne has sworn her life to finding and destroying her vampire dad, Kagan, and killing as many other vampires as she can in the bargain. See them in BloodRayne .
Yugi Moto is a gentle soul whose determination and talent make him a formidable opponent. See them in Yu-Gi-Oh! .
V is a violent anarchist with literally nothing left to lose. But, he might have a point. See them in V for Vendetta.
Raphael is a short-fused hothead who loves a good fight and some tasty pizza. See them in Teenage Mutant Ninja Turtles.
His superiority complex coupled with his bitter desire for revenge makes Vegeta a formidable foe. See them in Dragon Ball Z.