Toward the end of her run in her Oswald cartoons, she became progressively more sultry and flirtatious, culminating in her last appearance in All Wet, where she ended up bordering on femme fatale.
Like Ortensia, her name was never clarified to the public in the shorts, only seen on official copyright documents and the book: Walt in Wonderland: The Silent Films of Walt Disney. Curiously, she was identified as Ortensia herself back when Ortensia was nameless (despite being a different species) in Universal Studios' official copyright synopsis.
Originally, Fanny was supposed to be in Epic Mickey and replace Ortensia, but she was changed for unknown reasons, although it might have been the fact that Ortensia was Oswald's latest love interest.
- Despite appearing in only 4 shorts under the creation of Disney, Fanny reappears in a 1934 Lantz cartoon, "Candy House" and was retconned to be Oswald's sister. This is possibly one reason why she was absent in the 'Epic Mickey' games, as Fanny's most 'recent' iteration of her character had her changed to be Oswald's younger sibling, and the people involved in the games had most likely wanted to avoid any aspect of incest.