Because you like Peter Venkman in Ghostbusters

Eliot Waugh is the unspoken leader of his group of friends at a school for magic. See them in The Magicians.

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.

Merlin is half awkward teenager, half super-powerful wizard. He serves Prince Arthur of Camelot during the day and illegally learns magic at night. See them in Merlin.

Britta Perry has never met a cause she couldn't passionately champion—at least for a little bit. See them in Community.

As Marlena Rosenbluth is finding out, confidence in the limelight doesn't always translate to power at home. See them in Water for Elephants.

Rose Tyler may have not done too well in school, but she's certainly holding her own in space. See them in Doctor Who.

Galina Reznikov is the head chef of prison, cooking up meals as well as storms on anyone who dares to cross her; even the guards are terrified of her. See them in Orange Is The New Black.

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

Ratchet is a shoot-first, ask-questions-later, and then-shoot-again kind of lombax. See them in Ratchet & Clank.

With an abundant supply of alcohol, nice restaurants, and free will, Crowley is a demon who is thoroughly enjoying his time on Earth. See them in Good Omens: The Nice and Accurate Prophecies of Agnes Nutter, Witch.

All who live know his name, and all who oppose him shall know Death. See them in Darksiders Series.

Intelligent Adele is soft spoken yet brimming with emotion. See them in Blue is the Warmest Color.