Because you like Robert Chase in House M.D.

Regina George is teen royalty. And anything the queen bee says, goes. See them in Mean Girls.

Flexibility is more than Helen Parr's superpower. It's a key tenet of her personality that allows her to be both firm and understanding. See them in The Incredibles.

With great power comes great responsibility, but Peter Parker always seems to get the short end of that bargain. See them in Marvel Cinematic Universe.

She's mostly doom and gloom, but you'd get nowhere without Sadness. See them in Inside Out.

The Terminator is an emotionless killing machine who won't stop until he's changed the future. See them in The Terminator.

A beacon of positivity with a brilliant legal mind to boot, Elle Woods breaks down stereotypes about what girls can and can't do. See them in Legally Blonde.

Napoleon Dynamite loves tater tots, mythical beasts, and reveling in his awkwardness. See them in Napoleon Dynamite.

It’s usually the good-looking, charismatic, play-by-their-own-rules types that get everyone into trouble, and Tyler Durden is Exhibit A. See them in Fight Club.

While Fantine's gentleness has led others to take advantage of her, it ultimately forces her to become stronger. See them in Les Miserables.

SpongeBob SquarePants lives in a pineapple under the sea. Absorbent and yellow and porous is he. See them in SpongeBob SquarePants.

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

When push comes to shove, the usually overly cautious Luigi has the heart of a hero. See them in Super Mario Bros..