Because you like Emmett Brown in Back to the Future

Santana Lopez is a cutthroat cheerleader who's not afraid to speak, or sing, her mind. See them in Glee.

If this slick ad man doesn't like the conversation, he changes it—while drinking and smoking. See them in Mad Men.

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..

Xena's a warrior on a redemptive quest who excels in extreme sports and uses a whip to block axes in mid-air. See them in Xena Warrior Princess.

Pepper Potts can run a company, manage an egomaniac, and take down bad guys, all without breaking a sweat. See them in Marvel Cinematic Universe.

Mark Sloan is the best plastic surgeon and biggest playboy the hospital's ever seen. See them in Grey's Anatomy.

As Marlena Rosenbluth is finding out, confidence in the limelight doesn't always translate to power at home. See them in Water for Elephants.

With his own ship, Peter Quill calls his own shots, and gets to fly from planet to planet blasting '70s pop hits and picking up alien chicks. See them in Marvel Cinematic Universe.

She's a survivor of gunshots, of being buried alive, nand of paralysis. And now Beatrix Kiddo is going to make her abusers pay. See them in Kill Bill vol. 1.

Roger Kint is a nervous, weak, ham-handed criminal. We think. See them in The Usual Suspects.

A loyal dinosaur, Yoshi loves both saving the day and chowing down on a good meal. See them in Super Mario Bros..

Don't tell anyone Kate Austen was under arrest when the plane crashed. See them in Lost.