Because you like Lieutenant Worf in Star Trek: The Next Generation

Catwoman might be slightly unhinged, but you can't say this feline villainess isn't confident. See them in DC Extended Universe.

Cooper says he used to look up at the sky and wonder at our place in the stars, but now he looks down and worry about our place in the dirt. See them in Interstellar.

In constant agony, Ava Starr will do anything to give up the superpowers that are slowly killing her. See them in Marvel Cinematic Universe.

Daniel LaRusso is a Jersey kid in L.A. who is learning about karate and life from the mysterious Mr. Miyagi. See them in The Karate Kid.

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

Tail's smarts and helpful nature come in handy in a pinch. See them in Sonic the Hedgehog.

Louise Belcher might be just a kid, but she can manipulate just about anyone with a pulse. All in the name of fun, of course. See them in Bob's Burgers.

M. Bison is a diabolical megalomaniac hell-bent on dominating the world. See them in Street Fighter.

This cannibalistic villain may be a loner, but Killer Croc doesn't have problems with self-confidence. See them in Suicide Squad.

Handsome Jack is wearing a mask of his own face to hide his scarred real one. See them in Borderlands Series.

Basil Hallward is dominated, soul, brain, and power by Dorian. See them in Dorian Gray.

Jo Wilson is an accomplished doctor who's getting over her past. See them in Grey's Anatomy.