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In this quiz, we guess: Barnacle Boy, Bob, Bubble Bass, Dirty Bubble, DoodleBob, Eugene, The Flying Dutchman, Fred, Gary the Snail, Grandma SquarePants, Karen, King Neptune, Larry, Man Ray, Margaret, Mermaid man, Mrs. Puff, Patrick, Pearl, Sandy, Sheldon, Squidward, Squilliam Fancyson III.