Encyclopedia SpongeBobia
Encyclopedia SpongeBobia
Not to be confused with Incidental 2.
I'm getting something this amazing for free?!
— Incidental 9, "Free Samples"

Incidental 9[2], also known as Incidental PM18, is a background character who first appears in "Ripped Pants" while his production order debut is in "Squeaky Boots." He is classified as an "inbetween" type incidental.


He is a light orange fish with light blue stripes and light blue lips and a light blue fin. He has light yellow eyes with black pupils. He also has thin black feet.

Incidental PM18

A sketch of Incidental PM18's model pose.

He is a patty monster with a slightly slanted face, dark purple fins, plum eyelids, and red lips with jagged teeth.

Role in series

Incidental 9 approves of the "new" Krabby patties.

Incidental 9 has made more minor and non-speaking appearances than notable ones. He only speaks in a few episodes. He was firstly designed to be a Krusty Krab customer.

Major roles

"Hall Monitor"

He is seen as a student at Mrs. Puff's Boating School, sleeping during class both near the beginning and the end of the episode.

"Squeaky Boots"

SpongeBob places his plate of food on his table while he shows off his boots to Mr. Krabs.


He, Fred, and Incidental 31 are acting difficult and rushing Squidward about getting their Krabby Patties.

"No Free Rides"

He gets crushed by a bus by SpongeBob's driving in Mrs. Puff's imagination and says "ow."

"I'm Your Biggest Fanatic"

He appears as one of Kevin C. Cucumber's biggest fans in the ditch.

"The Fry Cook Games"

A female variant of him runs across a track in front of the screen at the Fry Cook Games stadium while SpongeBob was speaking to Mr. Krabs.

"Picture Day"

He is seen running from the teenagers throwing ketchup filled balloons.

"Walking the Plankton"

He runs over to SpongeBob and Mr. Krabs after smelling Mr. Krabs' Krabby Patty.

"The Way of the Sponge"

SpongeBob tosses his and Fred's Krabby Patties onto their plates.

"Free Samples"

A bunch of pennies burst out of his pockets after he tries a "new" Krabby Patty. He then uses his pennies to purchase more patties.

"Karen 2.0"

He backs off when Karen scolds Incidental 106.

"For Here or to Go"

He claims that Plankton's patties taste like carrots and aspirin.

"Hello Bikini Bottom!"

He is seen at the supermarket watching the popcorn machine pop to the tune of SpongeBob and Squidward’s performance.

"Little Yellow Book"

When Squidward tells the customers that SpongeBob named his spatula "Fifi," Incidental 9 turns to Incidental 41 and tells him that "He named it Fifi."

"Stuck on the Roof"

When SpongeBob builds a second Krusty Krab on the roof of the Krusty Krab, he claims that eating on the roof is now boring since they aren't outside anymore.

"Krabby Patty Creature Feature"

He is turned into a patty monster along with the other Bottomites as Incidental PM18. He feeds a part of himself to Incidental 42 which transforms him into a patty monster looking similar to Incidental PM18.


Incidental 9's female variant.

  • He is one of the few incidentals that has had a gender swap variant.


  1. ^ What Ever Happened to SpongeBob?
  2. ^ Incidental Model Sheet 1