Kelp Thing is an enemy of Mermaid Man and Barnacle Boy that first appears in the episode "Mermaid Man and Barnacle Boy VI: The Motion Picture."
Kelp Thing wears a light green and dark green suit, has a gold necklace, as well as eyestalks like those of a snail.
Kelp Thing's only known power is flying.
Kelp Thing's one true weakness is tow-away zones.
His real appearance was in the TV show. Kelp Thing was also portrayed in SpongeBob's remake of The Mermaid Man and Barnacle Boy Movie, as he wanted to steal Krabby Patties from the Patty Vault. He was to appear in both Drippy Bros. Studios Mermaid Man and Barnacle Boy film, as well as SpongeBob and Patrick's film, as the main antagonist.
|| I can turn into a skyscraper!
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He appears on a few of the cards that SpongeBob disguards.