Because you like Dan Humphrey in Gossip Girl

Castiel might be an immortal angel, but the human world is still more than a little confusing. See them in Supernatural.

While Jay Gatsby doesn't necessarily like to attend his parties, he knows how to throw a world-class bash. See them in The Great Gatsby.

Juno MacGuff is hoping sarcasm will get her through the stress of teenage life. And also, teenage pregnancy. See them in Juno.

Even the smallest person can change the course of the world, if he's brave enough. See them in The Lord of the Rings.

Make sure not to anger the Hulk or else he will transform into a giant green monstrosity and smash anything in his way. See them in Marvel Cinematic Universe.

Mystique is a shape-shifting mutant who, after too many disappointments, does not want to co-exist with humans. See them in X-Men Series.

Thor is Asgardian nobility who is tickled by how us earthlings live. See them in Marvel Cinematic Universe.

Accessing more than 10 percent of your brain can do strange things to anyone, and Lucy is Exhibit A. See them in Lucy.

It's easy for Brian O'Conner to fake his way into the world of extreme racing because he's been popping cars since his teenage years. See them in The Fast and the Furious.

If you died and came back to life, and then died more times and came back, you might stop battling evil mutants. Not Jean Grey. See them in X-Men Series.

A brilliant "extractor," Dom Cobb has spent the past few years running from the authorities and his inner demons. See them in Inception.

Toph is a tenacious earthbender full of spirit and spunk and hates when people try to baby her because she's blind. See them in Avatar: The Last Airbender.