Because you like Counselor Deanna Troi in Star Trek: The Next Generation

After years of being a nerdy loner, Seth Cohen can't wait to shower charm on his newfound friends. See them in The O.C..

The Hastings family is old and powerful, and Spencer will do anything to continue excelling. See them in Pretty Little Liars.

Blaine Anderson is a put-together prep school boy with the voice of an angel. See them in Glee.

Topanga Lawrence has been a put-together intellectual since basically the moment she could talk. See them in Boy Meets World.

Hawkeye Pierce is a Devil-may-care Army doc who'd have the Devil laughing and drinking in five minutes flat. See them in M*A*S*H.

When a half-breed breaks the rules, John Constantine deports them straight back to hell. He's trying to buy his way into heaven. See them in Constantine.

Scooby-Doo always keeps his priorities in order: eat snacks first, solve mysteries later. See them in Scooby-Doo.

A resourceful ship systems engineer, Isaac Clarke does his best to batttle the infection spreading across space. See them in Dead Space.

C is for cookie, and that's more than good enough for him. See them in Sesame Street.

Brian Griffin is the most scholarly member of the family—when he's not drunk on martinis. See them in Family Guy.

Eugene H. Krabs is a greedy restaurant owner who won't let a dime out of the reach of his claws. See them in SpongeBob SquarePants.

Serena van der Woodsen is a wild child. Too wild, her friends and family might argue. See them in Gossip Girl.