|Lives In||Chum Bucket, Bikini Bottom|
|Occupation||Various jobs at the Chum Bucket|
|Voiced by||Jill Talley|
Karen is one of the main characters in the series. She is a talking supercomputer who supplies her husband, Plankton, with plots to steal the secret Krabby Patty formula. Both Plankton and Karen are very smart and they would make an excellent team if they didn't bicker so much!
Karen can come across as cold and sarcastic, frequently making critical comments. She normally hides her romantic feelings for Plankton, but in reality cares for him very much. Karen loves music and science.
Karen's wall form is a big blue monitor with a black screen in the Chum Bucket laboratory. Her screen has green lines to tell which frequency she is speaking at. She has many buttons below the screen.