His appearance is similar to SpongeBob, except he is larger, has a greenish tinge, and has a lower pitched voice. He acts just like the normal SpongeBob.
Role in episode
When Squidward is sucked into the Void by Lord Poltergeist, he encounters this giant creature. In the creature's first appearance in the episode, he shows up in the void and scares Squidward. In his final appearance in the episode, he appears at the Cursed Krab, working there in the void by flipping the restaurant. His head then morphs into the Flying Dutchman's head and he starts laughing.