Because you like Bilbo Baggins in The Hobbit: An Unexpected Journey

A short-tempered guy, Bowser is determined to wreak havoc on the Mushroom Kingdom. See them in Super Mario Bros..

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

This bite-sized, power-hungry plankton is determined to uncover the secret recipe for the Krusty Krab burger. See them in SpongeBob SquarePants.

Wheatley's got an endless supply of bad ideas that he wants to share. See them in Portal Series.

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

Driven yet empathetic, Emily Prentiss brings humanity to the pursuit of inhuman killers. See them in Criminal Minds.

Don't underestimate Maggie Greene. She's a farm girl with a mission. See them in The Walking Dead.

Aldo Raine is in the killing Nazi business. And as he says, business is a-boomin'. See them in Inglourious Basterds.

With an abundant supply of alcohol, nice restaurants, and free will, Crowley is a demon who is thoroughly enjoying his time on Earth. See them in Good Omens: The Nice and Accurate Prophecies of Agnes Nutter, Witch.

Brian Griffin is the most scholarly member of the family—when he's not drunk on martinis. See them in Family Guy.

Luke Danes will serve you coffee and always be there for you to help out. See them in Gilmore Girls.