He is working at the cash register at the beginning of the episode. He later asks SpongeBob if he is going to pay for the stack of comic books he is holding. SpongeBob says no because Patrick took his $100 bill from his wallet when it dropped on the ground. The cashier kicks SpongeBob out of the store upon hearing he cannot pay.
He appears to be a citizen in New Kelp City and can be seen in the background when CheeseHead BrownPants is being celebrated as the new mayor of NKC. He attends the ceremony and can be seen in the crowd listening to him make his speech.
SpongeBob and Patrick are at the comic book store where SpongeBob is buying Mermaid Man and Barnacle Boy trading cards. The cashier tells SpongeBob about a rare holographic animated talking card and how there are only five in existence. SpongeBob buys nearly every trading card in the store in a quest to get the rare card, but is unsuccessful; Patrick buys the last card pack which has the rare cards in it.