Because you like Ben Wyatt in Parks and Recreation
The vampire that killed Zero Kiryu's family also infected him, and he starts to crave blood, much to his horror. See them in Vampire Knight.
Ben Barber is ready to show you that he's twice the man you think he is. See them in Ride Along.
Dimitri Belikov is a stoic vampire guardian who has the reserve, focus, and discipline of a soldier. See them in Vampire Academy .
A laid-back stoner, Ben Stone wasn't planning on life's ultimate responsibility. See them in Knocked Up.
After becoming accepted into the group of popular girls, Tracy Freeland has turned from a sweet and reserved teenager into a monster. See them in thirteen.