Because you like Philip J. Fry in Futurama

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

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

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