While not listed in the main cast in "The Simpsons" (1989) her role as Edna Krabappel is listed as a "special guest appearance," a designation usually reserved for celebrity guest stars.
Diagnosed with breast cancer 1985. Also caregiver to her husband, Denny, who had pancreatic cancer.
Member of Delta Zeta sorority, Delta Nu chapter.
She was a part of "The Fourth Wall" improvisational comedy group who performed off-Broadway before being signed for the "The Bob Newhart Show" (1972).
Has an adopted son Michael (b. 1988)
As of season 17 of "The Simpsons" (1989), Marcia has acted in 130 episodes.