Character Gallery Blue SquarePants is the paternal uncle of SpongeBob SquarePants, brother of Harold SquarePants and Sherm SquarePants. He is the son of Grandpa SquarePants and Grandma SquarePants, and also the brother-in-law of Margaret SquarePants. He only appears in the episode "BlackJack." "Uhh...we got a problem here" This article is a stub. You can help the SpongeBob Galaxy Wiki by expanding it. Retrieved from "https://spongebobgalaxy.fandom.com/wiki/Blue_SquarePants?oldid=16962" Categories: Stubs Characters Sponges SquarePants Family Male characters One appearance Bikini Bottomites Minor characters Community content is available under CC-BY-SA unless otherwise noted.