Because you like Donna Noble in Doctor Who

Altair Ibn-La'Ahad is as much a philosopher and detective as he is a killer. He takes nothing at face value and continually searches for deeper truths. See them in Assassin's Creed Series.

David Wooderson has clocked in hundreds of hours cruising around town looking for fun. See them in Dazed and Confused.

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

For Celty Sturluson, it's rather upsetting to be the only headless girl in a city filled with full-bodied humans. See them in Durarara!!.

Nina Sayer finally landed the role of prima ballerina, but as tension ramps up in rehearsal, she starts losing her mind. See them in Black Swan.

A resourceful ship systems engineer, Isaac Clarke does his best to batttle the infection spreading across space. See them in Dead Space.

Optimus Prime is a shapeshifting sentient robot leading a team of robots to stop evil from taking over. See them in Transformers.

Claire Underwood is scary intimidating, and she knows it. See them in House of Cards.

Tobias "Four" Eaton is only afraid of four things, but you should probably be afraid of him. See them in Divergent.

Inmate "Crazy Eyes" is a poetic soul with some big, expressive eyes. See them in Orange Is The New Black.

Alyssa Foley is a blunt and crass teenage runaway. See them in The End of the F World.

This is not a democracy. According to Torrance Shipman, it's a "cheerocracy." See them in Bring It On.