Because you like Martha Jones in Doctor Who

A self-professed psychopath, James kills small animals for fun. After getting bored of that, he is ready for an ambitious murder. See them in The End of the F World.

A tough and compassionate loner, Emma Swan just might be the key to saving an entire fairy tale world. See them in Once Upon a Time.

His name is Olaf, he's a snowman, and he likes warm hugs. See them in Frozen.

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

Jack Frost would rather crack a joke or throw a snowball than take anything seriously. See them in Rise of the Guardians.

Michael Scofield is no criminal, and he didn't get jailed by accident. See them in Prison Break.

Patrick's time as a fake psychic made him a master manipulator. But he now seeks to only use his talent for good. See them in The Mentalist.

Harry Potter is the boy who lived! See them in Harry Potter Series.

Curiosity and compassion aren't always to Jonas' advantage. See them in The Giver.

Jacob Black is the boy next door who's also the wolf next door. See them in Twilight.

Introspective Theodore Twombly would rather observe life than participate in it. See them in Her.

A powerful dragon-hunting warrior, Dovahkiin is destined for great things. See them in The Elder Scrolls V: Skyrim.