— Incidental 20, "Gary's Got Legs"
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, and has thin black feet.
He wears the Empty Head Society fez with a propeller on top and does not have his thin black feet.
He wears a dark blue guitarist jacket with a triangular collar and sleeves and holds a Goofy Goober guitar. He also does not have his thin black feet.
Role in series
Incidental 20 has made a few notable and speaking roles. He has been portrayed as more of a weirdo or an idiot in a few episodes. He usually appears in the background with other incidentals. He was firstly designed to be a beachgoer.
He is part of Squilliam Fancyson's group of friends.
He appears as a Fancy! customer, where SpongeBob swipes a Krabby Patty from him.
He appears as one of the red soldiers filling their cannon with soap.
He is the only customer at the Krusty Krab, enjoying the Krabby Patties full of Squidward's snot.
When Mr. Krabs assumes that his customers are hungry, Incidental 20 says that he bought a bagged lunch with him and everyone else reveals their bagged lunches too.
He is seen at the Krusty Krab smiling creepily at Squidward while waiting for his patty. He then happily hops away with his patty in his hands after receiving it.
He claims that his patty doesn't have enough snail slime.
He is seen smelling the grease scented toilet with Fred and Incidental 10. He later gets into a car accident that gets his boatmobile damaged and Mr. Krabs fixes his boatmobile by slamming a bottle of grease onto it. Incidental 20 becomes amazed by this and has everyone give three cheers for the grease.