Because you like White Witch in The Chronicles of Narnia

Buttercup is a farm girl turned princess who'd do anything to have her old life back. See them in The Princess Bride.

John Tyree has survived heavy gunfire and aggressive enemy soldiers. But can he handle a girl? See them in Dear John.

After having his mind altered after a bad breakup, Joel Barish is not convinced that ignorance is bliss. See them in Eternal Sunshine of the Spotless Mind.

A responsible kid, Hugo Cabret is still capable of flights of fancy. See them in Hugo.

When the Sorting Hat touched Draco Malfoy's head, it placed him in Slytherin, a house that has turned out more dark wizards than any other. See them in Harry Potter Series.

Edward Elric has a quick mind along with a quick temper. See them in Fullmetal Alchemist.

High school is Hell, so Allison Reynolds spends her time giving herself tattoos with ballpoint pens and shaking dandruff out of her hair. See them in The Breakfast Club.

Chuck Bass is notorious for his flamboyant sense of style and love of partying. See them in Gossip Girl.

Django was once a slave. Now that he has a taste of freedom, he understandably wants a full meal. See them in Django Unchained.

Just call Jeff Lebowski The Dude. Or His Dudeness, Duder, or El Duderino if you're not into that whole brevity thing. See them in The Big Lebowski.

Nicholas Angel is super-dedicated to his job as a police officer. Maybe a little too dedicated. See them in Hot Fuzz.

Severus Snape is a misanthropic potions teacher with a vindictive streak. See them in Harry Potter Series.