— Incidental 69, "Ink Lemonade"
He is a light orange fish with a large droopy chin and a big lime green fin on his back. He wears green pants and a white T-shirt. In his older appearances, his mouth was more squiggly, he had no pants, and had light green stripes on both his sides.
Role in series
Incidental 69 makes a few notable and speaking roles throughout the series. He usually appears as a silent incidental character in the background. He was firstly designed to be a Krusty Krab customer.
He appears as one of Kevin C. Cucumber's biggest fans in the ditch.
He appears in the winds section at Squidward's band practice where he repeats his clarinet tune.
He is one of the students that mistake Squidward’s art class for their cooking class.
He is seen at SpongeBob's house party laughing happily with Incidental 65.
He is part of the jury.
Mr. Krabs watches him plunge his fin into his bucket of coins at the Fun Arcade.
He is part of the Pirate queen's crew.
He wishes for a never ending roll of toilet paper to King Neptune.
He is the first customer at Patrick's lemonade stand, but gets sick due to the lemonade tasting terrible. Although it is later replaced with black lemonade, when he finds out that the lemonade Patrick has been selling is really Squidward's ink, he gets sick once again.
He begs SpongeBob to give him napkins after he is seen covered in grease.
SpongeBob almost runs over him while he is crossing the street.