Encyclopedia SpongeBobia
Encyclopedia SpongeBobia
Not to be confused with Male cowfish or the fish cowboy.
Well at least I still have my personality.
— Incidental 31, "Prehibernation Week"

Incidental 31 is a fish who first appears in the episode "Ripped Pants." He is classified as a "inbetween" type incidental.[1]


He is a cyan fish with three dark blue stripes on his back, light blue fins and a unibrow. He wears red swimming trunks.

Role in series

Incidental 31 at the Krusty Krab.

Incidental 31 is a somewhat common incidental character, he has had many notable & speaking roles as well as minor and non-speaking roles.

Major roles


He orders a Krabby Patty with extra onions at the beginning of the episode.


He, Fred, and Incidental 9 act difficult with Squidward as the fry cook at the Krusty Krab.

"Something Smells"

He is seen standing in the Reef Cinema bathroom with Incidental 30 and Incidental 41 where Patrick offers to tell the three of them a bathroom joke but they quickly get disgusted by his rancid breath and Incidental 31 calls out "You tryin' to kill us!" before the three exit the restroom.

"Patty Hype"

He, Incidental 42, and Incidental 5 show Mr. Krabs their colored tongues that they got from their pretty patties.

"Prehibernation Week"

While looking for SpongeBob in a sulfur field, he pokes his head into a crater and is burnt by a burst of sulfuric gas. Even with his charred, disfigured face, he claims at least he still has his personality. He later tries to pass SpongeBob off with a Kelpo cereal box to Sandy, but fails.

"The Bully"

He is seen as a student in Mrs. Puff's Boating School where he is show to acknowledge the sounds of SpongeBob rearranging his pencils at the beginning of the episode.

"Krabs à la Mode"

He orders 2 frozen Krabby Patties to use as skates.

"Model Sponge"

He is part of the action crew for the New Sponge commercial.

"Mutiny on the Krusty"

He is a customer at the Krusty Krab during the current. He tries to exit the Krusty Krab but a security buzzer goes off due to still having money on him. Mr. Krabs forces him to spend more money but he claims that he needs the money for rent.

"Mustard O' Mine"

He appears as a surfer miner with Incidental 23 and Incidental 41.


He was the first customer to be insulted by ChefBob. At first, this caused him to blush in embarrassment but he soon found it funny and laughed along with everyone else.

"Squid's on a Bus"

He is a passenger on the bus that was being drove by Squidward.

"A Place for Pets"

He drops his pet clam off at the Krusty Krab and asks Squidward if he could get him a Krabby Patty, but Squidward tells him only pets gets patties and tells him to eat at the Chum Bucket. Incidental 31 claims he doesn't want to eat at the Chum Bucket as he sadly walks over to the restaurant.