Because you like Butthead in Beavis and Butthead

Ponyboy Curtis is a "Greaser" on the surface, but he's a sensitive poet underneath. See them in The Outsiders.

Stewie Griffin is just your average evil-genius, talking, sociopathic baby. See them in Family Guy.

Deadpool thinks life is an endless series of train wrecks with only brief commercial-like breaks of happiness. See them in Deadpool.

A kind and funny valedictorian, Gwen Stacy likes to make out with Spider-man when her homework's done. See them in Marvel Cinematic Universe.

For somebody who won't answer questions, the enigmatic C.C. sure asks a lot of them. See them in Code Geass.

Brilliant, violent, and only a little insane, the Joker doesn't listen to anyone except the voices in his head. See them in DC Extended Universe.

Harry Osborn is the privileged son of Oscorp's founder with a goblin-sized chip on his shoulder. See them in Marvel Cinematic Universe.

Mavis Dracula's interests are anything black, scream cheese, and flying around. See them in Hotel Transylvania.

Ava may just be the perfect woman. So long as she can pass a Turing test. See them in Ex Machina.

Stoic, cynical, and brilliant, Solid Snake was genetically engineered to be the perfect soldier. See them in Metal Gear Series.

If you need her, Lisa Simpson will be in her room with her saxophone and a good book. See them in The Simpsons.

As the hero of time, Link is reborn throughout history, always with the purpose of fighting and defeating the evil Ganon. See them in The Legend of Zelda.