Because you like Mason in Boyhood

Kara "Starbuck" Thrace will beat you in cards, drink you under the table, then fly circles around you in her fighter plane. See them in Battlestar Galactica.

Rick Sanchez is a gruff, alcoholic mad scientist, with the emphasis on "mad." See them in Rick and Morty.

Don't ask the ruthless queen of the Tokyo underworld any questions unless you're fine with losing a limb. See them in Kill Bill vol. 1.

Logan Huntzberger is a daredevil, romantic, and heir to a media empire. See them in Gilmore Girls.

China has five thousand years of history, and he's optimistic he'll win over the Allied Powers to the wisdom of his ways. See them in Axis Powers Hetalia.

An exuberant prankster, Naruto Uzumaki craves acknowledgement of any kind. See them in Naruto.

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.

An inter-dimensional demon, Bill Cipher dreams of a more chaotic Gravity Falls. See them in Gravity Falls.

Konata Izumi has a live-now, worry-later view of the world. See them in Lucky Star.

It's hard to tell if Dean Winchester cares more about saving the world or his 1967 Chevy Impala. See them in Supernatural.

Don't ask Rosa Diaz, a Brooklyn detective, to lighten up. Actually, to be safe, don't ask her to do anything! See them in Brooklyn Nine-Nine.