Because you like The Master in Doctor Who

A suave demon, Crowley grants humans their wishes in exchange for their soul, only to find loopholes that benefit him. See them in Supernatural.

Cat Grant gets what she wants: a piping hot latte or an interview with Supergirl. See them in Supergirl.

A no-nonsense pro, Agent K has dedicated his whole life to his job. See them in Men in Black.

Boomerang is equally skilled at tossing boomerangs and tossing back beers. See them in DC Extended Universe.

This master marksman may be a villain, but Deadshot's motives aren't quite as selfish as they seem. See them in DC Extended Universe.

This android may not have emotions, but Lt. Commander Data's curiosity about humanity is endless. See them in Star Trek: The Next Generation.

This elf loves smiling, eating sugar, and spreading Christmas cheer. And no matter what, Buddy always sees the best in people. See them in Elf.

Protecting his family's name and its power are more important to Tywin Lannister than anything or anyone. See them in Game of Thrones.

Morpheus is wise enough to see into the bones of the world. See them in The Matrix.

Tina Goldstein is better at getting the job done than following the rules. See them in Fantastic Beasts and Where To Find Them.

A cursed pirate captain, Barbossa is greedy, vengeful, and surprisingly cheeky. See them in Pirates of the Caribbean: the Curse of the Black Pearl.

Though he may be blind, Chirrut Imwe sees the power of the force more than most. See them in Rogue One.