Billy[4] is a kid fish, who appears in many episodes usually making cameo roles.
Description
He is a blue kid fish who wears purple pants and a red propeller hat with a yellow propeller. In "Krusty Katering," different colored models of him are seen; as there are a purple, aqua, and yellow version of his character.
History
He is most notably seen in "Shanghaied," where he is subject to being 'scared' by SpongeBob and Patrick. In "Giant Squidward," he tells the town that Giant Squidward may be a nice giant like in his story book.
In "Keep Bikini Bottom Beautiful," his wagon is stolen by Squidward, but ends up getting beaten by his mother. In "The Wreck of the Mauna Loa," Mr. Krabs makes the height restriction to the Mauna Loa Amusement Park ride lower so he can ride. However, after the ride ends up getting destroyed, his parents complain about the ride being too dangerous for the kid.

Billy's model
Trivia
- This character has had six voice actors portray him throughout the series.