Because you like Alex Karev in Grey's Anatomy

Vengeance is William Wallace’s game. With his father, brother, and wife killed by the English, he slaughters the garrison and sacks cities. See them in Braveheart.

If you need her, Lisa Simpson will be in her room with her saxophone and a good book. See them in The Simpsons.

Foul mouthed and disturbingly comfortable with violence, Hit-Girl is a precocious assassin who doesn't need anyone's protection. See them in Kick-Ass.

Yuki Cross is a cheerful, funny, bold young woman with hidden insecurities. See them in Vampire Knight.

Raised to happily follow the rules, Cassia might actually be more rebellious than she thinks she is. See them in Matched .

Fox McCloud leads a team of pilots through the Lylat System in search of the evil genius Andross, the villain that killed his father. See them in Star Fox.

Konata Izumi has a live-now, worry-later view of the world. See them in Lucky Star.

Regina Mills is a cold evil queen turned chilly town mayor. See them in Once Upon a Time.

The Warden of the camp says that digging holes in the desert builds character, but Stanley Yelnats suspects there's more to it. See them in Holes.

WALL-E is a quirky little romantic robot cleaning the wasteland known as Earth. See them in WALL-E.

An opportunistic fugitive-turned-bounty-hunter, Faye Valentine uses both grit and her good looks to get ahead. See them in Cowboy Bebop.

Rukia Kuchiki is a cool and collected warrior who has trouble opening up to anyone. See them in Bleach.