Because you like Gretchen Wieners in Mean Girls

Sue Sylvester has a win-at-all-costs philosophy, a bizarre fixation on a school singing club, and a fashion style that involves a red tracksuit. See them in Glee.

Andy Bernard is a preppy Cornell grad who's very likely to break into an acapella performance. See them in The Office.

Tiana lives by a simple motto: "Fairy tales can come true. But you gotta make them happen, it all depends on you." See them in The Princess and the Frog.

Anger is a cantankerous hothead whose job is to get others riled up. See them in Inside Out.

Greg Heffley will be famous someday, but now he's stuck in class with morons. See them in Diary of a Wimpy Kid.

Izzie Stevens is a model-turned-med student who can do it all, even if people underestimate her. See them in Grey's Anatomy.

Marie Antoinette may be a fun-loving queen who has it all, but her husband doesn't know how to have sex, and an angry mob wants to cut off her head. See them in Marie Antoinette.

Nate Archibald is confident, shrewd and trying to do the right thing. But that isn't always easy on the ruthless Upper East Side. See them in Gossip Girl.

The brilliant Mona Vanderwaal is proof that undergoing an "extreme makeover" isn't always a good thing. See them in Pretty Little Liars.

Andrea Sachs' boss is not happy unless everyone around her is panicked, nauseous or suicidal. See them in The Devil Wears Prada.

D.J. Tanner is a rebellious teen who wishes her lame dad would butt out of her personal life. See them in Full House.

Josh Lucas just can't stop hanging around his stepsister's house. See them in Clueless.