My patty doesn't have enough slime!
— Incidental 20, Gary's Got Legs

Incidental 20 is a fish who makes several cameo appearances throughout the series. He is usually seen at the Krusty Krab and Goo Lagoon.


He is a light gray colored fish with dark purple arms and a long dark purple dorsal fin and has several purple spots. He wears a red speedo.


He went to the Krusty Krab with Jennifer Millie in "Pickles" and with Tina in the episode "The Algae's Always Greener." Sheldon also appears in the episode "Walking the Plankton," jumping off the ship after Karen splits it in half. He is also a friend of Squilliam Fancyson. He also appears in the episode "The Nitwitting" as a member of the Empty Head Society.


Incidental 20's model


  • He likes the Krabby Patties with snail slime.
Community content is available under CC-BY-SA unless otherwise noted.