Batman is one character, not just a superhero, that audience can relate to. For someone who doesn't possess any supernatural powers, he has developed himself into a crime-fighting machine where his wits, intelligence, strength, and desire to fight crime has dominated everything else in his life. Apart from retribution for his parents' deaths, he has sworn to make Gotham City a safe place for its residents. And if the cops can't seem to handle it, he will take matters into his own hands.