Because you like Susan Mayer in Desperate Housewives

Sydney Bristow is a kick-ass double agent on a mission for revenge. See them in Alias.

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

Phoebe Halliwell is a bestselling author and martial arts master with power of premonitions. See them in Charmed.

As a doctor-in-training, John Dorian should have his head in the game. But most of the time, it's in the clouds. See them in Scrubs.

Rupert Giles is a librarian on the outside, fearless evil-fighter on the inside. See them in Buffy the Vampire Slayer.

Kim Kelly is a high school bully who's normally in a bad mood. But there's a softer side to her. See them in Freaks and Geeks.

Derek Shepherd is a talented and passionate neurosurgeon. Some people call him McDreamy. See them in Grey's Anatomy.

Michael Kelso gets by on his good looks and his openhearted nature. See them in That '70s Show.

Jessica Davis is the girl that guys like to like. See them in Thirteen Reasons Why .

Haley Dunphy's interests include shopping, dating, and avoiding homework at all costs. See them in Modern Family.

Faith has a chip on her shoulder and a stake in her hand to slay vampires in her town. See them in Buffy the Vampire Slayer.

Alex Russo desperately wants to keep her magic – after all, things are so much easier when you can just wave a wand. See them in Wizards of Waverly Place.