Bubbles is a fish who lives in Lake Hoohaw. He is Peanut, Butter and Jelly's pet, though they really consider him more of a friend. Bubbles originally belonged to Ootsie and Bootsie, but the two did not really pay him attention. This was shown in "Bubbles' Beginnings," in which PB&J were given a practice pet, an alarm clock that they named Tick Tock. The two did a good job of taking care of their practice pet. Then, Bubbles swam over to their place and they kept him for a night. When they returned him to the Snooties, Ootsie and Bootsie decided that having a pet was too much trouble and they gave him away to PB&J.
Bubbles evidently made little impact on Ootsie and Bootsie because when he went missing in "Bye Bye Bubbles," they stated that he didn't look familiar. In "Poor Bubbles," Bubbles wasn't acting like himself. Peanut and Jelly sang "Bubble-O Popple-O," wishing that they could talk to fish and therefore communicate with Bubbles. Bubbles enjoys performing tricks. He is fond of tuna balls made by Georgina Snootie.