Because you like Alex Karev in Grey's Anatomy

Cosima Niehaus loves exploring the unknown. Even her own DNA is a puzzle, waiting to be unlocked. See them in Orphan Black.

After being resurrected and discovering his new morphing abilities, Alex Mercer uses them to combat the virus now ravaging New York. See them in Prototype Series.

Norma Bates may look like a harmless housewife, but don't let that fool you. See them in Bates Motel.

Combining an innocent face with an insatiable bloodlust, Eli recruits friends to join the vampire way of life. See them in Let the Right One In.

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

Though he has a brilliant mind for mathematics, Christopher has a much harder time processing the rest of the world. See them in The Curious Incident of the Dog in the Night-Time.

A genetic experiment engineered to be the perfect assassin, Agent 47 is cold, professional, and lethal. See them in Hitman.

Shana is a red-haired warrior with a black-and-white worldview. See them in Shakugan no Shana.

More of a sex symbol than a crime-stopper, the original Silk Spectre has now become the ultimate superhero stage mom. See them in Watchmen.

Sarah Kerrigan is pretty much the Queen Bitch of the Universe. See them in StarCraft .

Holly Golightly spends so much time trying to be other people's dream girl, she doesn't really know what kind of girl she actually is. See them in Breakfast at Tiffany's.

Funny, bubbly, and relaxed, Emma has a magnetic personality that makes her the life of the party. See them in Blue is the Warmest Color.