Because you like Rose Tyler in Doctor Who

Told her son will one day save the world, Sarah Connor dedicates her life to training him to do just that. See them in The Terminator.

Gruff and sarcastic, Detective Harry Dresden use unconventional ways to track down perps, including using magic and the supernatural. See them in The Dresden Files.

The biggest nerd in high school, Bill Haverchuck is the biggest target for bullies. See them in Freaks and Geeks.

Jonathan Byers is a kindhearted outcast who tends to be in the wrong place at the wrong time. See them in Stranger Things.

Mr. Fox will never truly be happy without a dead chicken between his chompers. See them in Fantastic Mr. Fox.

Robbie Turner has been accused of a crime he never committed, changing the course of his life forever. See them in Atonement.

Ahsoka Tano hopes to be a very powerful and knowledgeable Jedi one day. See them in The Clone Wars.

With an undeniable sense of adventure, Huck Finn is an expert at getting into and, more importantly, out of sticky situations. See them in The Adventures of Huckleberry Finn.

Quiet and brooding, Ennis Del Mar keeps his true passions close to the chest. See them in Brokeback Mountain.

Though Ray Holt is a man of few words and even fewer smiles, he cares deeply about his precinct and detectives. See them in Brooklyn Nine-Nine.

They say Babydoll has lost her mind. But why does it seem like she's the only sane one in her institution? See them in Sucker Punch.