Jimmy Gus is a green fish that makes many cameo appearances in episodes.
Jimmy wears a black top hat with a red strip. He is lime-green and so are his fins and lips. He wear a purple shirt and blue pants.
- "I for one, love to watch people dance while I eat!"
- "Mrs. Puff, I've done it already."
- "Ahhh!" (seen screaming from "Born Again Krabs" and "New Digs")
- "Hello good sir, my name is..."
- "He's right! This guy is so good, you should give him a prize!"
- "Is this your snail?'
- "Put that thing on a leash!"
- "Do we know you?" (along with Dale)
- "Come on!" (repeated several times along with everyone else in line from "Stanley S. SquarePants")
- "We want Krabby Patties!" (deep in line along with other fish from "Mystery With The Twistery")
- "Hi SpongeBob and hello lady!"
- "Thanks! 12 inches of deliciousness!"