Mrs. Puff's Western Ancestor
Mrs. Puff's Western Ancestor is a dancer at the Krusty Kantina and hates Dead Eye Plankton a lot. At the end of the episode Pest of the West she let out her anger and stomps on Dead Eye Plankton several times. She is the only other known family member of Mrs. Puff who looks like her.
She pretty much looks like Mrs. Puff. The only difference between her and Mrs. Puff is the hair and the clothing. She wears a purple dress and a long pink feather on her hair.
Her first (and probably last) appearance was in the special Pest of the West.