Because you like Egon Spengler in Ghostbusters

Both a noble district attorney and a psychopathic villain, Harvey Dent proves some men really can have it all. See them in The Dark Knight.

It's a race against time to develop his theory of the origins of the Universe before Stephen Hawking's body and mind give out. See them in The Theory of Everything.

Victor Frankenstein can create life, so he's pretty awesome if he says so himself. See them in Frankenstein.

One of the best in the magical world, Mad-Eye has the battle scars to prove his dedication to such a dangerous job. See them in Harry Potter Series.

A karate master/rocket scientist/squirrel, Sandy Cheeks is the only one who can clean up the other resident's messes in Bikini Bottom. See them in SpongeBob SquarePants.

Jesse Aarons' frustration can only find outlet in another world. See them in Bridge to Terabithia.

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.

This bite-sized, power-hungry plankton is determined to uncover the secret recipe for the Krusty Krab burger. See them in SpongeBob SquarePants.

Polite and clever, Annie James is not afraid to stir up a little mischief. See them in The Parent Trap.

Kesuke Miyagi is a karate expert who thinks the best way a scrawny high schooler can learn how to defend himself is by washing every surface in sight. See them in The Karate Kid.