— Incidental 69, "Ink Lemonade"
Incidental 69 is a light orange fish who first appears in the episode "Pickles."
He is a light orange fish with a big lime green fin on his back. He wears green pants and a white T-shirt. In his earlier appearances, his mouth is more squiggly, he has no pants, and has light green stripes on both his sides.
Role in series
He appears as one of the many fish at the Krusty Krab.
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.