Because you like Jefferson Smith in Mr. Smith Goes to Washington

Cosima Niehaus loves exploring the unknown. Even her own DNA is a puzzle, waiting to be unlocked. See them in Orphan Black.

Amy Santiago likes following the rules a little too much. See them in Brooklyn Nine-Nine.

Effy Stonem is cool and collected with a wry smile on her face and a cigarette between her lips. See them in Skins.

Willow Rosenberg may be a witch who can defeat the forces of evil, but she still gets emotional over kittens on the Internet. See them in Buffy the Vampire Slayer.

Molly Weasley runs a household teeming with magic: gnomes run around the garden, dishes wash themselves, and noisy ghouls rule the attic. See them in Harry Potter Series.

A girl who grew up on stories, Meggie Folchart is as loyal and intrepid as one of her fictional heroines. See them in Inkheart.

Juno MacGuff is hoping sarcasm will get her through the stress of teenage life. And also, teenage pregnancy. See them in Juno.

Hanna Marin is a determined girl defined by her ability to transform herself. See them in Pretty Little Liars.

A tough tomboy with a protective streak, Maximum Ride is a human-bird hybrid. See them in Maximum Ride.

Christopher Turk is bringing his A-game to his next big challenge: becoming a surgeon. See them in Scrubs.

Father to a murdered son and husband to a murdered wife, Maximus Decimus Meridius will have his vengeance. See them in Gladiator.

A super-soldier, Master Chief might be more machine than man. And for humanity's sake, thank God. See them in Halo.