Superman, man who is invincible and wears his pants on top of his trousers, constantly saves metopolis from evil.
Batman, man with no powers, just lots of hi-tech gadgets, but still saves Gotham city, from evil
Spiderman, man with radioactive spider bite, uses his spider powers to defeat the evil forces that attack New York
B. Someone who killed a lot of "bad guys"/ who bribed someone like a king with money for fame.
C. the barabrian definition: the guy who killed the most in battle.
B: most counts in the middle ages were apparantly heroes.
C: most likely the chief of the barbarian village was the hero, if the chief didn't kill the most, he wasn't chief anymore.