Puffo The Amazing Expanding Fish is a character who performs at the Clamshell Theater in "Freddi Fish and the Case of the Missing Kelp Seeds".
Freddi Fish and the Case of the Missing Kelp Seeds
Puffo's act is watched by Freddi Fish and Luther while they're looking for Grandma Grouper's lost kelp seeds. In the act, Puffo blows himself up when a green starfish scares him with a shark mask. He then flies off the stage while the green starfish follows him with a balloon.