Why can't villains be heroes?

Guess if we think the villan is a hero that's all that counts. I always did like the under dog in some movies. I haven't been to the movie in years so i have u beat, lol.

If you have watched of any batman films, you could have seen how one person evolves to be a villain. Example, the second dark knight film that showed Harvey aka Two Face. His transformation of becoming a villain from a hero - mainly because something tragic has happened to him. All villains goes through a very tragic events and they become one because they can't accept of the bad that has happened to them even if there's still goodness in their hearts. Remember Mr. Freeze who helped Batman in the end to save Alfred (the batman movie where Alicia Silverstone was on it - lol ). Lots of factors actually. But like the first post said, heroes are nothing without them. :D

There are three type of characters; the heroes, the villains, and antiheroes. The villains are probably the most important as without them, the hero would have nothing to do. The antiheroes could be described as heroes who don't follow the same rules. Batman could be called an antihero. I have not seen Despicable Me but from the commercials I've seen, it seems to me the main character is not a true villain but is attempting to be one. Without seeing the movie, I cannot be sure of this or give a reason why.