Edna
 
A quiet yellow old lady fish making cameos in some episodes. She only appears in Mermaid Man and Barnacle Boy, Patty Hype, Mermaid Man and Barnacle Boy IV, Krabs vs Plankton, Best Frenemies, The Krusty Sponge, The Two Faces of Squidward, Giant Squidward, and Sun Bleached. She appears in the beggining of Clash of the Triton where she was lifted by someone playing basketball.