Incidental 118C

Incidental 118C is a fish who first appears in the episode "Chocolate with Nuts."

Description
He is a lavender fish with light purple fins. He wears a small brown hat with an orange stripe, a brown vest over his light tan dress shirt with a brown tie, and rolled up sleeves.

"Chocolate with Nuts"
He scams and  out of their money three times by selling them candy bar bags, candy bar bag carrying bags, and pretending he is seriously injured just to sell more chocolate bars to SpongeBob and Patrick. Ironically, he was the only customer they didn't sell any chocolate to.

"20,000 Patties Under the Sea"
He thanks SpongeBob and Patrick after they pay him and the female judge to take the they were selling.

"Snooze You Lose"
He appears with the crowd surrounding SpongeBob and Patrick inside.

"The Getaway"
He appears as a Jewelry store employee who SpongeBob distracts while Sticky Fins Whiting steals from the shop.

"Spot Returns"
He appears at the Krusty Krab, where he and the other customers are distracted by the identical twin puppies.

"Sanitation Insanity"
He is shown selling boatmobiles to Carl.

"The Ballad of Filthy Muck"
He is shown as part of the angry mob against Filthy Muck and SpongeBob.

"The Krusty Slammer"
He is one of the customers dining at the Krusty Slammer, and later leaves when the prisoners start a riot.

"Broken Alarm"
He is the owner of Clock World, a clock store that SpongeBob visits in order to find a replica of his alarm clock. He tells SpongeBob that his brand of alarm clock is no longer produced, though he has many other clocks SpongeBob can buy. SpongeBob, indecisive, buys all of the clocks and gives the con man a pile of money, causing the con man to run to a nearby Yachts store, buy an expensive yacht and drive away with it.

"Senior Discount"
He is one of several customers in the Krusty Krab whom Old Man Jenkins annoys.

"Bubble Bass's Tab"
He watches Bubble Bass mock with Incidental 160 in his car.