Incidental 93 is an elderly fish and recurring character who appears in numerous episodes throughout in the series, beginning with "Mermaid Man and Barnacle Boy." She resides at Shady Shoals Rest Home.
She is lavender and has light bluish-white hair. She usually wears a light blue dress, oval-shaped glasses, black boots, and red lipstick. She can also be seen wearing a hearing aid.
She was once a kindergarten teacher. When SpongeBob attended kindergarten, he had Miss Shell as a teacher.
She has also worked as a librarian at the Bikini Bottom Library.
Originally, she became a kindergarten teacher. At some point, she retired from her job and then moved to Shady Shoals Rest Home.
- Her eyes are seen in the episode "Neptune's Spatula" and she has a male voice when she says "Holy smokes!"