Morty is a light purple fish who wears pants with two yellow buttons and a green newsie hat. In his first two appearances, his pants are blue. In his third appearance, his pants are light brown. He also has large black eyes.
He appears as a mailman who delivers SpongeBob's conch signal.
Lights, Camera, Pants!
He is shown to be a student at Mrs. Puff's Boating School and seems to be upset because he forgets the combination to his locker to get his crackers until SpongeBob offers him a role in The New Adventures of Mermaid Man and Barnacle Boy. SpongeBob does find the combination and successfully opens the locker, but never returns the crackers to Morty.
He has a friend who hangs out at the Krusty Krab 2 who also appears in the game. While playing with her at the Krusty Krab, Morty finds a pass card to use the elevator in the Krusty Krab. He labels it as his "Super Magic Fairy Card of Power" and takes it to Goofy Goober's Ice Cream Party Boat to order some fried ice cream. Realizing the parlor does not carry fried ice cream, Morty decides to watch Goofy Goober perform instead.
When SpongeBob arrives and asks Morty for the pass card, Morty says he would only trade it for some fried ice cream. After receiving the fried ice cream from SpongeBob, Morty hands over the pass card.