Bubby

Bubba is Francine and Catherine's maternal grandmother. Her last name is unknown because she is on Laverne's side. She is Jewish like Francine's Family. She went to Francine's family's apartment to celebrate Yom Kippur in Is That Kosher?. She first appeared in Arthur's Perfect Christmas, but became recognized as an official character in Is That Kosher?. She is guest voiced by Joan Rivers.