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, starting with "Ripped Pants." He is usually seen at the Krusty Krab and Goo Lagoon.


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


He goes to the Krusty Krab with Jennifer Millie in "Pickles" and with Tina Fran in the episode "The Algae's Always Greener."

He is a friend of Squilliam Fancyson, as seen in "Squilliam Returns."

Sheldon also appears in the episode "Walking the Plankton," jumping off the ship after Karen splits it in half.

He appears in the episode "The Nitwitting" as a member of the Empty Head Society.


  • He likes Krabby Patties with snail slime.[1]


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