Fanny first caught Bender Bending Rodríguez's eye during a performance. He was prepared to romance her and showed up with flowers, she appeared ready to sleep with him until it is revealed that she was married to the Donbot but once Donbot turned his back, they immediately began an affair by kissing and having sex on the floor. They managed to avoid exposure until Joey Mousepad and Francis X. Clampazzo ("Clamps") reported their suspicions to the Donbot.
After Bender won a poker tournament, the Donbot became increasingly suspicious, as, Bender had his lucky foot that Fanny had sawed off. He took Bender and Fanny out into the desert before he and his associates gunned the couple down as they kissed, then they buried them. The next day Bender and Fanny rise from the ground and continue the affair (although Bender has lost interest in her) and then later rejoins her husband. She is seen among the crowd at the Violet Dwarf Star.
Fanny next appears in "The Silence of the Clamps" when she is attending her eldest daughter's wedding. During the dancing she is hit on by Bender (after he is rebuffed by the bride) who has no recollection of any previous meeting or their affair. After she reminds him of their time, Bender briefly recalls the event and decides to avoid sleeping with someone he already slept with.
Fanny is present for the trial against the Donbot where Bender is a witness and is seen among the crowd in the courtroom.