Hey Plankton, can I get another one of your delicious Chum Sticks?
— Incidental 41, Plankton's Regular

Incidental 41 (named Peterson,[6] Nat,[7] Tucker,[8] Gary Greenfish,[9] and Bastian Roughshark[10]) is a fish who has appeared in various episodes and is one of the most common fish characters in the series. He debuted in "Ripped Pants" and had his first major role in "Plankton's Regular."


Nat is a yellow-tan-colored fish with light lavender lips and a dark lavender dorsal fin.

He has white eyes with black pupils. He has a lavender mouth. He has light green arms and legs and wears faded light blue shorts. His stomach is dark-yellow/green and he is very slender and skinny.

Nat often goes without wearing a shirt or shoes. 


Nat works at Snail-Po Headquarters and a variety of other places. He was also a member of the Bikini Bottom Music Lovers Club. His last name is revealed in the episode "Missing Identity" when Norma Rechid addresses him by the surname "Peterson."

He is friends with Fred, Harold Bill Reginald Scott, and DoodlePants (as seen in Drawn to Life: SpongeBob SquarePants Edition). He tells DoodlePants helpful advice on how to defeat DoodleBob

He seems to be with Martha Doris Smith in various episodes, although Shubie Peterson may also be his girlfriend/wife, as seen in the episode "SpongeHenge."

Role in series

In "Fools in April," he is amused by SpongeBob's prank.

In "Artist Unknown," when Squidward welcomes him to art class, he says "Oh, isn't this cooking?" He also says that he is a better artist than Squidward.

In "Just One Bite," he is seen as the wedding announcer.

In "Idiot Box," he is seen on a soap opera, giving a box as a gift.

In "One Krabs Trash," Nat at one point offers Mr. Krabs $100,000 for the soda drinking hat.

In "Squilliam Returns," he is seen hanging out with Squidward's arch rival from high school, Squilliam Fancyson, suggesting that he is wealthy.

He is seen baking a cake in "Mrs. Puff, You're Fired." He is also a bus driver in the episodes "Rock Bottom," "Hocus Pocus," "The Pink Purloiner," "Roller Cowards," "A Flea in Her Dome," and "Nautical Novice." He has a strict no-singing policy.

In "The Great Snail Race," he sneaks into the announcer's box, only to be caught by Sports guy.

Nat is also seen as a cotton candy salesman in "Sing a Song of Patrick."

In "The Battle of Bikini Bottom," he is one of the citizens who reenacted the Battle of Bikini Bottom.

In "Suction Cup Symphony," he is shown to be the drummer of the Bikini Bottom Symphony Orchestra.

In "The Splinter," Squidward pretends to "squish" him.

In "Slide Whistle Stooges," he is seen being stitched by the Dr. Gill Gilliam.

In "Plankton's Regular," his most notable appearance, he feigns enjoyment of Plankton's chum in order to fulfill a deal with Karen, Plankton's wife. He is shown to live in a mobile home and apparently possesses great acting skills, as he manages to fend off SpongeBob's persistent attempts to give him a Krabby Patty. However, one can foresee the ending when Nat is forced to taste Mr. Krabs' Krusty Chum and he proclaims that it is the second foulest thing he has ever tasted. The audience can infer that the foulest thing is actually Chum, and Mr. Krabs has thwarted him in that area of food service as well.

At the end of the episode, Nat breaks the news to Plankton and cuts off the deal with Karen, returning the money that she had given him to eat at the Chum Bucket. He is last shown being carted off by medical staff members to have his stomach pumped, which he claims will be the third time he will have visited the doctor on account of Chum.

In the episode "Squid Baby," he yells, My face! My face! Also my leg, but mostly my face!," making a reference to Fred's catchphrase "My leg!"


  • Nat's name could possibly be based off the word gnat, which is a small, non-biting or biting insect that bears similarities to mosquitoes.
  • His design is similar to Norton, except his dorsal fin is smoother and his colored differently.
What is Nat Peterson Hiding?! 👀 Bikini Bottom Mysteries Ep

What is Nat Peterson Hiding?! 👀 Bikini Bottom Mysteries Ep. 4 Nick

  • The fourth episode of Bikini Bottom Mysteries uses the name "Nat Peterson" for this fish, as it was the name used by Encyclopedia SpongeBobia at the time.


  1. ^ "Idiot Box." SpongeBob SquarePants. Nickelodeon. DATE. Television.
  2. ^ "Sun Bleached." SpongeBob SquarePants. Nickelodeon. DATE. Television.
  3. ^ "Goo Goo Gas." SpongeBob SquarePants. Nickelodeon. DATE. Television.
  4. ^ "Sweet and Sour Squid." SpongeBob SquarePants. Nickelodeon. DATE. Television.
  5. ^ Sanitation Insanity
  6. ^ "Missing Identity." SpongeBob SquarePants. Nickelodeon. DATE. Television.
  7. ^ "Plankton's Regular." SpongeBob SquarePants. Nickelodeon. DATE. Television.
  8. ^ "Big Sister Sam." SpongeBob SquarePants. Nickelodeon. DATE. Television.
  9. ^ SpongeBob Schwammkopf Magazine 04/2012
  10. ^ SpongeBob Schwammkopf Magazine 05/2012
Characters (VE)


SpongeBobPatrickSquidwardMr. KrabsPlanktonKarenSandyMrs. PuffPearlGary


PatchyPottyFrench NarratorMermaid ManBarnacle BoyFlying DutchmanKing NeptuneLarry the LobsterHarold SquarePantsMargaret SquarePantsGrandma SquarePantsRealistic Fish HeadPerch PerkinsBikini BottomitesJellyfish

Major Background

Bubble BassFredHaroldPeterson Nat TuckerOld Man JenkinsSandalsTomNorma Rechid



Atlantis SquarePantis (VE)

Characters:Lord Royal HighnessAtlantean citizensCaptain of the Sea Ship AtlantisKnowledge MachineAtlantean RobotsRobot touristsRed AtlanteanYellow AtlanteanAtlantean royal guardNandoSpongeBob hallucinationAggressive Case of the SnifflesOrange guardBubble SpongeBobVultureDave (cave)Ghostly piratesGermsNorblock FivePedal-throwing robotMagenta thugPale anakiwa thugLight brown thugGreen jellyfishRed jellyfishGhost jellyfishBlack jellyfishMagma jellyfishDiamond JellyfishSteel JellyfishBrown tall fishPurple tug fishPontifexGigantic JellyfishRoyal Guard CommanderLawrence WhelkJohnny

Locations:AtlantisMuseum of AtlantisMuDriving You Nuts!SpongeBob's pineapple gardenSquirrel Museum of NutsSquirrel CityWhelk-MartJellyfish FieldsEncinoGasMusic StationNickelodeon Animation StudioBikini Bottom MuseumAtlantis PalacePlankton's DenAtlantis ParkAtlantis CliffsAtlantis SuburbsBikini BottomKelp ForestShip GraveyardThe Escape RouteThe Bubble RoomThe Art RoomThe Science RoomThe Armoury Room

Objects:Plankton's tankAtlantean amuletSea Ship AtlantisOldest living bubbleGolden spatulaSheet musicMelody ShellsToolkitSpeed BoostersHooksAtlantis bubblesBubble Collector 2000Frampton Comes AliveSquidward tikiCanned BreadAnchor ArmsTackTime ClockNut LauncherPaper clipConveyor beltsPlankton's shoesTreadmillYellow AnchorCombJellyfish netSquidward's clarinetSpongeBob StatuePatrick StatueSquidward Statue

Songs: The Bubble SongFueling the BusMr. Krabs' songSandy's songSquidward's songPlankton's SongGood-Bye, AtlantisBack in Encino

Shorts: Are We There Yet?Beware Flying JellyfishDocumenting Our Road Trip

Miscellaneous: DVDBookVideo gameMobile gameOnline gameAtlantis unofficial songSpongeBob's Director's CommentaryMy Trip to Atlantis - by SpongeBob SquarePantsSpongeBob's Atlantis SquarePantis SquareOffInside the SpongeBob Animation StudiosBehind the PantisOn the Road AgainFrom the Beginning, Pt.2The Best 200 Episodes EverSpongeBob SquarePants Vol. 7SpongeBob SquarePants Special Collection, Vol. 1The First 100 EpisodesThe Complete Fifth SeasonSeason 5 Volume 2Blitz GamesAltronSpongeBob Z-A CountdownPaparazzi ParadeSwapBob SpareFaceSea-BayHappiness to Go!Best Bikini Bottom Stories Ever!The SpongeBob Super Square Collection

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