Because you like Peter Venkman in Ghostbusters

John Locke is an eerily calm, confident believer in the magic of the island that gave him his legs back. See them in Lost.

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

Rose Hathaway is a reckless, rebellious smartass who's training to be a royal vampire guardian. See them in Vampire Academy.

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