Because you like Alfredo Linguini in Ratatouille

Herion is Mark Renton's favorite drug. He sniffs it, smokes it, swallows it, sticks it up his arse, and injects it into his veins. See them in Trainspotting.

For Louie C.K., comedy is tough but fatherhood is even tougher. See them in Louie.

Titus Andromedon will show you the ropes, help you with your problems, and sing at you constantly, whether you like it or not. See them in Unbreakable Kimmy Schmidt.

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

Smart but insecure, Tally Youngblood is torn between what she wants and what her society demands. See them in Uglies.

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

Keren Walker is a socialite looking to avoid work, keep a constant buzz, and be as snarky as possible. See them in Will & Grace.

Raised to happily follow the rules, Cassia might actually be more rebellious than she thinks she is. See them in Matched .

Sam Roth is sensitive, musically gifted, and scarred by his past. See them in Shiver .

Ilana Wexler is rarely found without a joint. When she's not absolutely blazed, she is a below average employee and an incredible best friend. See them in Broad City.

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

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