Because you like Khan Noonien Singh in Star Trek Into Darkness

Gollum is slimy and seething with hatred, the last person you would want to meet in a dark cave. See them in The Lord of the Rings.

If there's any hope of resolving things peacefully, this proud ape leader will have to trust the humans. See them in Dawn of the Planet of the Apes.

Foul mouthed and disturbingly comfortable with violence, Hit-Girl is a precocious assassin who doesn't need anyone's protection. See them in Kick-Ass.

Daxter is half otter, half weasel, all snark. See them in Jak and Daxter.

A great galactic bounty hunter, Samus Aran is not as good at expressing emotions. See them in Metroid.

Ellen Ripley defines the word "badass." When she's not leading her crew on an interstellar voyage, she's slaying terrifying creatures. See them in Alien.

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

Donna Pinciotti is strong, independent, and empathetic. No one messes with her. See them in That '70s Show.

Underneath his preening narcissist exterior, Schmidt is, well, still kind of a preening narcissist. But he has a good heart too. See them in New Girl.

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

Tarzan is walking the line between human and animal. Good thing he has excellent balance. See them in Tarzan.

Adrian Agreste is a charming rich teenage boy, model, and hero in a catsuit. See them in Miraculous: Tales of Ladybug & Cat Noir.