Question: who plays maleficent in once upon a time
Answer: Kristin Bauer van Straten ( born November 26 , 1966 ) is an American film and television actress , perhaps best known for her roles as vampire Pamela Swynford De Beaufort on the HBO television series True Blood , Jerry 's girlfriend Gillian on Seinfeld , and as sorceress Maleficent in the ABC series Once Upon a Time .