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Charisma Carpenter, 'Buffy the Vampire Slayer'
Then: Cordelia was your typical rich, popular cheerleader living in the hellmouth. Cordelia was a reluctant part of the Scooby Gang until the end of Season 3, when she bailed for the "Angel" spinoff. Unfortunately, she didn't quite make it all the way through that, either -- an evil god possessed her, and that never ends well.
Oct. 23, 2012
Now: Currently starring on ABC Family's "The Lying Game," Carpenter remains a genre favorite. Last season, she reunited with "Buffy" costar James Marsters for an episode of "Supernatural."