Karen Plankton is a waterproof computer who lives in the laboratory of the Chum Bucket. She is married to Sheldon J. Plankton and acts as his sidekick. She is his constant source of evil plans, which she gives him to steal the Krabby Patty Secret Formula. Plankton always fails and messes up these plans, but he nonetheless takes all of the credit for Karen's plots.
In seasons 1-4, Karen is a giant computer monitor on the wall. Since the first movie, she has had a mobile form that is a smaller, portable computer on wheels. Her "face" is actually just a black screen with a neon green wavelength line that moves to indicate her talking. Her screen can also replace itself with different symbols.
"Uhh...we got a problem here"
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