The Pirate Skeleton is a very minor character, who had his first and so far only appearance in the episode "Scaredy Pants."
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The skeleton only appered at the very beginning of the episode, and didn't appear anywhere else in the episode, and it only appeared for just a few seconds of the episode. The skeleton wears darkish-red gloves that go from about the wrist to the rest of the hand. It also wears dark blue boots.