Because you like Mark Renton in Trainspotting

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.

Nadine Franklin likes to wallow in her misery almost as much as she likes to torment her mother. See them in The Edge of Seventeen.

A free-spirited girl, Kim doesn't judge by appearances. See them in Edward Scissorhands.

Though seemingly caring and calm, this motel owner has a mysterious streak of intensity. See them in Psycho.

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.

There's erratic, and then there's Senor Chang. See them in Community.

Timid and a bit insecure, Amy Antsler has big dreams of activism and meeting new people. She's learning it's easier said than done. See them in Booksmart.

Arwen has to choose between a life of loneliness or love and inevitible death, both rather unfortunate options. See them in The Lord of the Rings.

Darcy Lewis is a razor-sharp scientist studying things that science can't explain. See them in Thor.

In the simplest terms, in the most convenient definitions, people consider Brian a nerd. But he's more than that. See them in The Breakfast Club.

Miss Havisham is the creepiest old rich lady in town. See them in Great Expectations.

Carl Gallagher is a budding psychopath fascinated with rule breaking. See them in Shameless.