Incidental 17 is a fish citizen who appears in several episodes, starting with "Ripped Pants."
He is a light orange fish with dark orange fins and legs. He wears a black and white horizontal-striped swim suit, black shoes, and a light green hat with a black stripe. In "Call the Cops," he doesn't wear a hat.
Role in series
He appears watching the weightlifting competition at Goo Lagoon.
He appears as a referee in a tennis match between Abigail and Sadie. However the plane that SpongeBob was flying takes him, Sadie, and the court on top of the plane. SpongeBob then beats Abigail at the game of tennis and Incidental 17 says that SpongeBob got the match point.
He angrilly leaves the Krusty Krab when SpongeBob yells out the Krabby Patties will taste like chum. Mr. Krabs tries to drag him back in by grabbing the back of his shirt but he managed to exit the restaurant.
He had his first and so far only speaking role in "Snail Mail."