— Incidental 84, "The Two Faces of Squidward"
- In "The Two Faces of Squidward," her name is Mabel.
Incidental 84 is a light gray, elderly fish who wears a light blue dress with olive-green spots. She uses a wheelchair and has light gray hair.
Role in series
"Mermaid Man and Barnacle Boy"
She appears as a resident at the Shady Shoals Rest Home.
"The Two Faces of Squidward"
She appears at the Bikini Bottom Hospital where SpongeBob gives her a blue flower. She thanks him and claims blue is her favorite color but then begins thinking that it may be orange due to her amnesia.
She appears at the retirement home where she was a part of SpongeBob and Squidward's audience.
She is seen at the Low Tides concert twice. First she was seen being carried by the audience along with Incidental 37A while holding her wheelchair. She later appears as the very last audience member to run out of the concert while holding her wheelchair when Squidward was about to play the clarinet.
- In her model image, her left arm is missing. This is actually an error from the episode that the frame for her model image was taken from.