He looks identical to the main universe Barnacle Boy, except he does not wear the mask and instead of a sailor's hat, it is a Soda Jerk hat.
Once SpongeBob enters the altnerate Bikini Bottom, he decides to go to Mermaid Man and Barnacle Boy for help opening Evil Sandy's Treedome. Once he arrives at what should be the Mermalair, he finds a resturant called, "Mermapatties", where Barnacle Boy is waiting for customers. SpongeBob thinks that Barnacle Boy is pretending to sell patties, but he says that he is not, though he wishes he was. Mermaid Man arrives and says that he found some food in the back.
- Barnacle Boy seems to hate his job, as when asked why he was "pretending" to sell food, Barnacle Boy responds "If only I was pretending."