Karen EX is a robot humanoid whose was originally Karen until her swich has been flipped on her back by SpongeBob. Karen EX is moar powerful, advanced and strongest humanoid computers in the world than her old self does.
Her battle dance theme is Death by Glamour.
After having the switch on her back flipped, Karen transforms into Karen EX, a new body she specially requested Plankton make for her. In this humanoid form, she has black hair with a fringe that covers her right eye, pale "skin", and visible metal segments below and above her left eye.
She has a blue-gray-silver chest piece with a dial on one side and a speaker on the other, a narrow metallic waist which holds her soul upside down, and black shoulder guards above her segmented arms, which end in gloves. Her long black-clad legs end in blue-gray-silver heeled boots. Her appearance and style were used from Equestria Girls.