Because you like Hit-Girl in Kick-Ass
In his transformation from hardened convict to moral paragon, Jean Valjean is the kind of man we should all aspire to be. See them in Les Miserables.
Donkey is proof that if you're annoying enough you can change the world; he's the reason that his friend Shrek does, well, anything. See them in Shrek.
Hiccup Haddock III may be the only Viking nerd in recorded history. See them in How to Train Your Dragon.
Jacob Black is the boy next door who's also the wolf next door. See them in Twilight.
Despite Norman Bates' typically kind and shy personality, he is also prone to occasional violent outbursts. See them in Bates Motel.
Green skin, pointy hat, evil cackle—this villain has it all! See them in The Wizard of Oz.
Turanga Leela is the daughter of two mutants who live in the sewers below New York City. See them in Futurama.
Claire Underwood is scary intimidating, and she knows it. See them in House of Cards.
Hoban Washburne shows you can be a hotshot space pilot *and* play with dinosaurs. See them in Firefly.
Sabriel is smart enough to understand the dangers that await her and brave enough to face them anyway. See them in Abhorsen Series.