Sheila (The Life of SpongeBob SquarePants)

Sheila is a gray white-haired fish who is also a citizen of Bikini Bottom. She usually wears a yellow dress and a yellow headband. She looks very similar, sometimes indistinguishable, from Nancy Suzy Fish.

Biography
She makes her first appearance in the season 1 episode "Sandy Goes a-Writin'", in which she is shown as one of the customers who abandon the Krusty Krab for the Chum Bucket after reading the preface to Sandy's book The Horrible Condition of Bikini Bottom's Employees, written by Plankton, who serves as the book's printer and distributor, without Sandy's permission; the customers later return to the Krusty Krab after Sandy and SpongeBob confront Plankton at the Chum Bucket and urge everyone to ignore the "Chum Bucket propaganda".