Because you like Seth Gecko in From Dusk Til Dawn

Fiery and adventurous, Amy Pond is the sort of woman you'd want by your side on a journey through time and space. See them in Doctor Who.

Told her son will one day save the world, Sarah Connor dedicates her life to training him to do just that. See them in The Terminator.

Steve Stifler is more than just a dude with a hot mom. He's also rude, profane, and obnoxious. See them in American Pie.

Beware! Anton Chigurh carries a coin with him, which he forces his victims to flip to decide whether they will live or die. See them in No Country for Old Men.

A born psychopath, don't expect Michael Myers to understand the difference between right and wrong. See them in Halloween.

When he's not working as a detective, Lucifer is driving around in a black convertible or having one-night stands. See them in Lucifer.

Philip J. Fry accidentally cryogenically froze himself for a millennium. See them in Futurama.

Roger is a pansexual alcoholic non-human who will happily lie, cheat and steal to get what he wants. See them in American Dad!.

Clarice Starling is patiently working with one serial killer to stop another. See them in The Silence of the Lambs.

Andy Dwyer might not be completely literate, but he makes up for it in spirit. See them in Parks and Recreation.

The Terminator is an emotionless killing machine who won't stop until he's changed the future. See them in The Terminator.