Because you like Olive Hoover in Little Miss Sunshine
Impassive, overly literal, and a little short on people skills, Angel dedicates her life to enforcing the rules. See them in Angel Beats!.
The vampire that killed Zero Kiryu's family also infected him, and he starts to crave blood, much to his horror. See them in Vampire Knight.
The adventurous daughter of Port Royal's governor, Elizabeth Swann would rather conspire with pirates than sit pretty in her corset. See them in Pirates of the Caribbean: the Curse of the Black Pearl.
Aang is already a master airbender and once he learns to manipulate water, earth, and fire, he'll be truly unbeatable. See them in Avatar: The Last Airbender.
Light Yagami has a plan to make a better world, and morals won't stop him. See them in Death Note.
Part of an elite team of investigators, Abby Sciuto is the happiest Goth to ever work in law enforcement. See them in NCIS.
Everyone Barney Stinson knows is getting married or pregnant. But he's just getting more awesome. See them in How I Met Your Mother.
People think that because Tris is small, or a girl, or a Stiff, she can't possibly be cruel. But they're wrong. See them in Divergent.
Captain Spock is on a five-year mission exploring the final frontier and boldly going where no man has gone before. See them in Star Trek.
Rukia Kuchiki is a cool and collected warrior who has trouble opening up to anyone. See them in Bleach.
An escaped convict on a mission, Sirius Black is brooding, brave, and reckless. See them in Harry Potter Series.