Incidental 21, also known as Incidental PM13, is a fish who makes occasional appearances throughout the series, beginning with the episode "Ripped Pants." He is classified as a "hotdog" type incidental.


He is a peach-colored fish with big orange eyes and has reddish-brown fins and lips. He wears a teal shirt.

Role in series

"Ripped Pants"

He is one of the many fish surrounding Incidental 155 while he is holding SpongeBob, who is believed to have drowned, and later appears cheering in the audience during SpongeBob's song.

"Christmas Who?"

He sings "The Very First Christmas" along with a bunch of citizens.

"Bulletin Board"

He appears several times as one of the many customers participating in the Krusty Krab bulletin board.

"Krabby Patty Creature Feature"

He is seen as a patty monster where he shoves Old Man Walker to the side right before the elder was able to eat the chum coming towards him.

"The Hankering"

He can be seen at the beginning sipping a soda at the Krusty Krab.

"Escape from Beneath Glove World"

He is seen in the crowd at the end of the episode.

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