Because you like Kevin McCallister in Home Alone

Derek Shepherd is a talented and passionate neurosurgeon. Some people call him McDreamy. See them in Grey's Anatomy.

If it were up to her, Merida would spend her days practicing archery and swordfighting, riding her horse, and exploring the Highlands. See them in Brave.

Alex DeLarge likes his favorite milk-based, drug-laced cocktail. It helps him get in the mood for a night of "ultra violence." See them in A Clockwork Orange.

The irrepressible Lucy Ricardo has never met a challenge she couldn't scheme her way into or out of. See them in I Love Lucy.

The crown prince of the Fire Nation, Zuko has been ordered by his father to find the long-lost Avatar before he is allowed to return home. See them in Avatar: The Last Airbender.

Wei Shen is an undercover cop on a mission for justice (or at least vengeance). See them in Sleeping Dogs.

It’s a shame that the Seven Kingdoms doesn’t allow a woman to rule. The scheming, focused Cersei Lannister would do a far better job than either of her sons. See them in Game of Thrones.

Caleb Rivers is a bad boy with a good reason for acting out. See them in Pretty Little Liars.

Faith balances her adventurous thrill-seeking attitude with a righteous passion for justice. See them in Mirror's Edge.

We're all puppets. Dr. Manhattan is just a puppet who can see the strings. See them in Watchmen.