Don't worry, Homer. You will always be a part of me. [hits her head on the van] D'oh!
~ Mona Simpson, before leaving.

Mona Penelope Simpson (nee Olsen) was a minor character in the animated television series The Simpsons.  Mona is the estranged wife of Abe Simpson and the late mother of Homer Simpson. Homer believed that his mother was dead, a lie his father Abe told him when in reality she was on the run from the law. Mona first appeared in the second season in a flashback in "Oh Brother, Where Art Thou?". She returned in the seventh season for her first main appearance in "Mother Simpson" and also had a large role in "My Mother the Carjacker". The character appeared last time in Season 19's "Mona Leaves-a", but died during the episode.

Mona is named after writer Richard Appel's wife but the inspiration for the character came from Bernardine Dohrn of the Weather Underground. 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.

She has been voiced by several actresses, including Maggie Roswell, Tress MacNeille and most prominently, Glenn Close.


Many of the details of Mona's life are unknown, but various pieces of her story have been revealed. Mona was first mentioned in season one and made two brief flashback appearances, but her first major appearance was in "Mother Simpson". In the episode, it is revealed that in the 1960s, Mona was a housewife who lived with her husband Abraham Simpson and Homer, who at the time was a child. She became caught up in the hippie movement after her beliefs were ignited by seeing Joe Namath's long hair during Super Bowl III. Mona soon after became a political activist and, at one event, Mona and a group of other activists protesting germ research entered Montgomery Burns's laboratory and destroyed all the biological warfare experiments. As the gang escaped, she stayed behind to help a fallen Burns, who in turn threatened her. Since that night, Mona was forced to leave her family. Seeking to comfort his son, Abe lied and said Mona had died while Homer was at the movies. For 27 years Homer presumed that his mother was dead. He was accidentally reunited with Mona after he faked his own death to get a day off of work and Mona visited his supposed gravesite. Overjoyed at their reunion, he brings Mona home to meet his family. At first, Mona does not reveal her whereabouts and spends time catching up with her family, but is forced to reveal her past. She later travels to the post office with Homer, where Mr. Burns recognizes her face and tracks her down with FBI assistance. Forced to go on the run again, Mona tells Homer she loves him and escapes to the underground. Homer and Mona in the 60s, as seen in "Mother Simpson".

In "D'oh-in in the Wind", it is revealed that at some point, Mona started spending time at a commune with two hippies Seth and Munchie after life with Abraham became unbearable. It is also strongly implied that she was unfaithful to Abraham.

In "My Mother the Carjacker", Homer discovers a secret message left for him in a newspaper that tells him to go to a location. Homer does, and finds Mona, who explains that she had to return after she saw a macaroni pencil holder Homer had made for her when he was five. Still on the run from the law, she is captured by the police and forced to go on trial for the crime she committed. Due to Homer's heartfelt testimony she is acquitted. Mr. Burns is angered by this and has her imprisoned for the minor charge of signing into a national park under a false name. As she is being transported to jail, Homer attempts to break her free from the prison bus, but the chase ends in what appears to be her death when the bus drives off a cliff and lands in the water, where it explodes, and sets off a rock avalanche which buries it. In truth, she narrowly escaped before the bus went off the cliff, and is still on the run.

Mona returned in "Mona Leaves-a" to try to make up for lost time with Homer, but he angrily refuses, saying that she will just end up abandoning him again. Homer feels guilty about being mad at her and tries to make up with her only to find she has died. She is cremated and according to her will, Homer is supposed to throw her ashes out on a mountain, where they disrupt a missile guidance system which would have devastated the Amazon Rainforest once again plotted by Burns. Although disappointed that the last thing his mother asked him to do was "another hippie protest", Homer successfully stops the launch.


Mona Simpson is first mentioned in season one's "There's No Disgrace Like Home", where Homer recalls his mother telling him that he's a "big disappointment". She later made two brief flashback appearances, the first being season two's "Oh Brother, Where Art Thou?" and the second being season six's "Grampa vs. Sexual Inadequacy", and in both cases she was voiced by Maggie Roswell. Mona's first major appearance was in the seventh season episode "Mother Simpson". The episode was pitched by Richard Appel, who had been desperately trying to think of a story idea and decided to do something about Homer's mother. Many of the writers were surprised that an episode about Homer's mother had not previously been produced. The writers used the episode as an opportunity to solve several puzzles about the show, such as where Lisa's intelligence came from. The character is named after Richard Appel's wife, who is the novelist Mona Simpson. The inspiration for the character comes from Bernardine Dohrn of the Weather Underground, although the writers acknowledge that several people fit her description. Her crime was intentionally the least violent crime the writers could think of, as she did not harm anyone and was only caught because she came back to help Mr. Burns.

Mona Simpson was designed in a way so that she has a little bit of Homer in her face, such as the shape of her upper lip and her nose. There were several design changes because the directors were trying to make her an attractive older and younger woman, but still be "Simpson-esque".


Glenn Close was convinced to voice the character in "Mother Simpson" partially because of James L. Brooks. She was directed in her first performance by Josh Weinstein. When Mona gets in the van, her voice is done by Pamela Hayden because Glenn Close could not say "d'oh!" properly and thus they used the original temp track recorded by Hayden.

Glenn Close would record original material for two other episodes, season 15's "My Mother the Carjacker" and season 19's "Mona Leaves-a". A deleted scene featuring Mona from "Mother Simpson" would appear in season seven's "The Simpsons 138th Episode Spectacular". The character would also have a speaking appearance in season ten's "D'oh-in in the Wind", this time voiced by Tress MacNeille.


Glenn Close has been well-received as the voice of Mona. ranked Close as the 25th best guest star in the show's history for her first two performances as Mona. In 2007, Entertainment Weekly called Close one of "fourteen guest stars whose standout performances on TV make us wish they'd turn up in a Simpsons Movie 2". In 2008, Entertainment Weekly would also name Close one the 16 best Simpsons guest stars. The placed Close in the second position on their list of the best 20 Simpsons guest stars. Star News Online listed Close as one of the four hundred reasons why they love The Simpsons. Close appeared on AOL's list of their favorite 25 Simpsons guest stars. Robert Canning of IGN wrote that Close "gave us the sweet voice of Mona Simpson. She's a perfect fit, able to convey a loving, motherly tone, while still convincing the audience she's a headstrong hippie activist."

"Mother Simpson" is one of Bill Oakley and Josh Weinstein's favorite episodes as they feel it is a perfect combination of real emotion, good jokes and an interesting story and they have expressed regret about not submitting it for the Emmy Award in the Outstanding Animated Program (For Programming less than One Hour) category. "My Mother the Carjacker" received a Writers Guild of America Award nomination in 2004 in the animation category. "Mona Leaves-a" received mixed reviews from critics. Robert Canning described it as "clunky and forced and wasn't all that funny" but still gave it a 7/10. Richard Keller called it a decent episode, but despised Mona's brief appearance.



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