Incidental 60 is a fish who makes many cameo appearances throughout the series, starting with the episode "Pickles."
He is a rectangular shaped faded-blue fish with two light purple stripes on his back and has a light purple dorsal fin. He is usually naked but can be seen wearing clothing in a few episodes which is usually red swim trunks.
Incidental 60 is one of the customers who SpongeBob and Patrick encounter while selling chocolate. He is most notable for being welcomed with a rather unsettling, out-of-context expression of love by Patrick. During the episode, he had been talking with them about his abstaining of chocolate after they requested him to purchase their chocolate bars. Instead of purchasing them, he offers them to purchase pictures of his overweight photographs while he had a former chocolate addiction.