Because you like Amy Pond in Doctor Who

Like her trusty sword, Arya Stark is tiny but vicious. See them in Game of Thrones.

This high school queen bee has everything, including a genius-level IQ—a fact Lydia Martin keeps hidden to maintain her image. See them in Teen Wolf.

Kyoya Ootori is possibly the only person who could reasonably go from VP of a school club to ruling the world. See them in Ouran High School Host Club.

All the world's a stage, and Missy Piggy's never one to give up the spotlight. See them in The Muppet Movie.

World domination and Superman's demise are next on Lex Luthor's to-do list. See them in DC Extended Universe.

Effortlessly sexy, calm, and collected, Eric Northman is equally at home ripping off heads and flirting with waitresses. See them in True Blood.

There are rumors that the Spirit was an Egyptian Pharaoh in his past, but without any memories, he doesn't know how true they are. See them in Yu-Gi-Oh! .

His name is Olaf, he's a snowman, and he likes warm hugs. See them in Frozen.

A baker turned reluctant fighter, Peeta Mellark can charm his way out of just about any situation. See them in The Hunger Games .

Tiffany Maxwell wishes people would stop reminding her about her dead husband. See them in Silver Linings Playbook.

A powerful mob boss, Vito Corleone is always making offers people can't refuse. See them in The Godfather.

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