Because you like Nick O'Leary in Nick and Norah's Infinite Playlist

He's a troubled insomniac in search of a moment to rest and a meaning to his existence. See them in Fight Club.

Paris Geller is a newspaper editor, class president, and headed for Harvard. See them in Gilmore Girls.

The destroyer, Drax lives for one thing and one thing only: revenge. See them in Marvel Cinematic Universe.

Chaos is what killed the dinosaurs, and there's nothing Jason "J.D." Dean loves more than chaos. See them in Heathers.

Viking Astrid Hofferson has it all: brains, brawn, and some killer braids. See them in How to Train Your Dragon.

Javert is an inspector with a single-minded focus: to bring criminals to justice. See them in Les Miserables.

Alex Danvers is a brilliant engineer tasked with alien threats, and one of those aliens is her adopted sister Supergirl. See them in Supergirl.

Beautiful and artistic, Aria Montgomery follows her own path. See them in Pretty Little Liars.

Samwell Tarly is a scholar, not a fighter. But that's not good for an aspiring member of the Night's Watch. See them in Game of Thrones.

Morticia Addams hates anything bright and cheery and loves all things ghoulish, ghastly, and violent. See them in The Addams Family.

Helena is a mentally unstable, childish, and completely merciless. And most of all, she's an unstoppable killer. See them in Orphan Black.