Because you like Ianto Jones in Torchwood

Phoebe Halliwell is a bestselling author and martial arts master with power of premonitions. See them in Charmed.

Turanga Leela is the daughter of two mutants who live in the sewers below New York City. See them in Futurama.

Khan Noonien Singh is super strong, super smart, and out for revenge. He always seems to be two steps ahead of his enemies. See them in Star Trek Into Darkness.

The witty Aku would be an ideal dinner guest, if he weren't a demon. See them in Samurai Jack.

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.

Blunt but anxious, Gretchen Ross bonds most easily with those who have lived tough lives like she has. See them in Donnie Darko.

People make more sense to the hyper-logical Temperance Brennan after they're dead. See them in Bones.

Polite and clever, Annie James is not afraid to stir up a little mischief. See them in The Parent Trap.

Caleb Rivers is a bad boy with a good reason for acting out. See them in Pretty Little Liars.

No one has seen The Mandalorian without his helmet since he swore the creed. See them in The Mandalorian.

This lab mouse has one thing on his huge brain: trying to take over the world on a nightly basis. See them in Pinky and the Brain.