Billy  is a light brown fish who first appears in the episode "Prehibernation Week."
Billy is a light brown fish, with a light yellow dorsal fin. He has black eyes and is usually seen wearing a red T-shirt and a white and blue propeller cap.
Role in series
Billy is in a super market then when he walks up to Sandy and then Mable-Monica says, "Billy, don't talk to a squirrel. You'll catch its stupid."
|| I can turn into a skyscraper!
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- In some episodes, he can be seen in winter clothes.
- His production label is "kid w/ beanie.
- In the game Drawn to Life: SpongeBob SquarePants Edition, Billy appears with about two color schemes. In some levels, he has his normal color scheme. In others, he is light green with a yellow shirt and a pink beanie.