Because you like Kenny McCormick in South Park

Told her son will one day save the world, Sarah Connor dedicates her life to training him to do just that. See them in The Terminator.

A champion of chivalry, Don Quixote is dutifully bringing good to the world—even when others think he's out of his mind. See them in Don Quixote.

Anna Karenina doesn't want to be a respectable woman any more. She thinks respect was invented to cover the empty place where love should be. See them in Anna Karenina.

Breaking bones and hearts, Callie Torres has figured out how to put the bones back together. But the hearts? Not so much. See them in Grey's Anatomy.

We defy you to find a man who's ever been cooler while simply saying his own name. See them in Casino Royale.

It turns out the girl of your dreams just might have dreams of her own. See them in (500) Days of Summer.

Lloyd Dobler is a kickboxer wearing his heart on his sleeve who would do anything for the woman he loves. See them in Say Anything.

Serena van der Woodsen is a wild child. Too wild, her friends and family might argue. See them in Gossip Girl.

Bella Swan thinks of it as her job to help her parents and protect her friends, even though it often ends up the other way around. See them in Twilight.

When Rin Matsuoka is not swimming, he mostly spends his time brooding or listening to angry Dubstep. See them in Free! Iwatobi Swim Club.

A gentle alchemist who is soul-bound to a giant suit of armor, Alphonse Elric is growing into the responsibility handed to him. See them in Fullmetal Alchemist.