Kelpy G's appearance is like most octopuses in the show: tall and teal with four legs. He has long, light brown hair and a regular brown mustache. He wears an orange, long-sleeve turtleneck with three red stripes on it. However, in "Smoothe Jazz at Bikini Bottom," he wears leather black shoes that look like SpongeBob's and a long purple dress shirt.
Kelpy G has his very own TV show where he performs smooth jazz. He also performs smooth jazz for the Smellies; he calls them "his children," suggesting that he's their leader.
He appears in the episodes "The Thing" and "Smoothe Jazz at Bikini Bottom," both of in which he performs a jazz song on Squidward's TV and performs a concert. Squidward is annoyed that SpongeBob and Patrick keep interrupting while he is trying to listen to Kelpy G play.
Squidward attempts to meet Kelpy G but gets kicked out as SpongeBob plays with the musician.