Because you like Chuckie Finster in Rugrats

Clary Fray's philosophy: dive into the supernatural underworld first and ask questions later. See them in City of Bones.

Cinder has been beaten down by the world, but she's learning that her cyborg abilities are pretty helpful. See them in Cinder .

Whether he's fighting or flirting, Jace Wayland is all swagger. See them in City of Bones.

When a half-breed breaks the rules, John Constantine deports them straight back to hell. He's trying to buy his way into heaven. See them in Constantine.

America Singer is a feisty, fiercely independent musician who places little value on the restrictive rules of her society. See them in The Selection .

Teddy Sanders loves his frat brothers so much he might never leave school. See them in Neighbors.

It's hard to tell if Dean Winchester cares more about saving the world or his 1967 Chevy Impala. See them in Supernatural.

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

It doesn't matter how noble or brave he is. Jon Snow is a bastard, and people don't let him forget it. See them in Game of Thrones.

Dimitri Belikov is a stoic vampire guardian who has the reserve, focus, and discipline of a soldier. See them in Vampire Academy .

Rose Hathaway is a reckless, rebellious smartass who's training to be a royal vampire guardian. See them in Vampire Academy.

Jenko was top dog in high school. Now he's bottom of the pack in the police academy. See them in 21 Jump Street.