Grand-Maul Granny is part of "The Drasticals". She is an elderly woman. She only appeared in Extreme Spots. She is portrayed by Jill Talley, who also portrays Karen Plankton. She is known to have a prosthetic hip, due to possibly an accident being with the Drastic Radicals or other injury prior to being with the team. She is possibly related to one of the Drastic Radicals, being a grandmother to one of them.
She has a large gray wig. A fraction of this wig is restricted by the blue helmet she wears. She wears glasses that completely cover her eyes. Her lips run across her face in a wave-like style. She wears a red dress that only reveal her arms and her legs. Her arms and legs, though, are wrinkled, yet is normal for a woman her age. Her skin color is light green.