Karen Plankton (birthday: December 20)[1] is one of the ten main characters of the SpongeBob SquarePants franchise.[2] She is a waterproof supercomputer who lives in the Chum Bucket laboratory. She is Plankton's wife and sidekick who supplies him with evil plans to steal the Krabby Patty formula. Karen and Plankton both debut in the episode "Plankton!" As a computer, Karen is the smartest resident of Bikini Bottom and has a clever, analytical personality