Incidental 46(also known as Nazz-Mimi) makes many cameo appearances throughout the series. She has been the best student of Mrs. Puff, and she made her first speaking appearance in "Walking Small."
Nazz-Mimi is a light emerald-green fish who wears a red bathing suit, and has light teal lips and light-yellow and black eyes, and she also has light blue fins. Like SpongeBob, she has three black eyelashes. She is also usually seen with Gus.
She is married to Frankie-Billy as revealed in "The Wreck of the Mauna Loa." Her ex-boyfriend is Gus, and she appears with him in numerous episodes. It is revealed in "Whirly Brains" that she is the mother of a green baby (of which she leaves the stinky diaper behind). It is unknown who the baby's father is, but it is possibly Frankie-Billy. She also might be the mother of Taylor as revealed in "The Wreck of the Mauna Loa." She is sisters with Norma and Patty Rechid whom she looks very similar to. She is also Fred's sister-in-law and Baby Rechid's aunt.