Because you like Patrick Bateman in American Psycho

Simon Belmont is a vampire hunter bravely carrying on the family business. See them in Castlevania.

A sadistic sociopath, Lil Z is helping make the City of God slum a Hell on Earth. See them in City of God.

Olive Hoover is an irrepressible child beauty queen (or would-be queen) who doesn't play by your rules. See them in Little Miss Sunshine.

If this slick ad man doesn't like the conversation, he changes it—while drinking and smoking. See them in Mad Men.

His name is Chucky, and he's your friend till the end. Hidey-ho! See them in Child's Play.

One of Freddie Mercury's songs is "We Will Rock You." And does he ever! See them in Bohemian Rhapsody.

Catherine Linton was once spontaneous and rowdy but ever since marrying the wealthy Edgar, she has morphed into a boiling pot of emotional outbursts. See them in Wuthering Heights.

This master marksman may be a villain, but Deadshot's motives aren't quite as selfish as they seem. See them in DC Extended Universe.

A gifted detective, Rust Cohle is as dark and twisty as any murderer he chases. See them in True Detective Season 1.

Herion is Mark Renton's favorite drug. He sniffs it, smokes it, swallows it, sticks it up his arse, and injects it into his veins. See them in Trainspotting.

Columbus can't trust anyone. The first girl he let into his life tried to eat him. See them in Zombieland .

Funny, bubbly, and relaxed, Emma has a magnetic personality that makes her the life of the party. See them in Blue is the Warmest Color.