Mona Simpson

Mona Penelope Simpson (née Olsen) is a recurring fictional character in the animated television series The Simpsons. She has been voiced by several actresses, including Maggie Roswell, Tress MacNeille, Pamela Hayden, and most prominently, Glenn Close. Glenn Close's performances as Mona have been well received by critics and she was named one of the top 25 guest stars on the show by IGN.