Mrs. Clayface is a minor character and the wife of Clayface.
Mrs. Clayface is a plump woman made up of amorphous mud with large white eyes and bright pink lips. She wears a pink bow on her head.
It's unknown who voices her in the English version of the cartoon.
Hawkgirl finds her in the mud bath and attacks her, thinking she's trying to attack the spa. Hawkgirl later finds out she's just enjoying the mud bath.