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

When the Sorting Hat touched Draco Malfoy's head, it placed him in Slytherin, a house that has turned out more dark wizards than any other. See them in Harry Potter Series.

Underneath her brassy, sarcastic exterior, Olive Penderghast is more sensitive than she pretends to be. See them in Easy A.

People think that because Tris is small, or a girl, or a Stiff, she can't possibly be cruel. But they're wrong. See them in Divergent.

Regina Mills is a cold evil queen turned chilly town mayor. See them in Once Upon a Time.

Kat Stratford is part of the "out" crowd and proud of it. See them in 10 Things I Hate About You.

Damon Salvatore used to miss being human. Now he can't think of anything more miserable. See them in The Vampire Diaries.