Because you like Rory Williams in Doctor Who

Anyone who's said "Don't worry, it's just a dream" never met Freddy Krueger. See them in A Nightmare on Elm Street.

Given his ability to wrench street signs from the ground, Shizuo Heiwajima is a useful one to have in dangerous Ikekuburo. See them in Durarara!!.

Tony Stonem is the golden boy of Bristol. Problem is, he knows it. See them in Skins.

A 100-plus-year-old who looks like a dreamy teenager, Edward Cullen warns girls to avoid him, which makes them want him even more. See them in Twilight.

Will Herondale is an emotionally distant bad boy with a secret. See them in Clockwork Angel .

Serena van der Woodsen is a wild child. Too wild, her friends and family might argue. See them in Gossip Girl.

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.

Back in his hometown, Richie Tozier has been punched, dragged to a crackhouse and now has to kill a clown. See them in It.

Fun and feisty on the outside, Meredith Grey is dark and twisty on the inside. See them in Grey's Anatomy.

Smart, sarcastic, and loyal, Stiles Stilinski doesn't just want to be the sidekick in someone else's life. See them in Teen Wolf.

L is enigmatic, child-like, and one of the smartest people in the world. See them in Death Note.