The Kaizoku Skeleton ( 海賊スケルトン Kaizoku sukeruton?, lit. "Pirate Skeleton") is an enemy that appears in Sonic Rush Adventure. It is a mass-produced Badnik model created by Dr. Eggman and Dr. Eggman Nega.
The Kaizoku Skeleton is a humanoid skeleton who possesses no legs. It has light blue eyes, wears a dark blue bandana on its head, and wears a blue vest with yellow trimmings that expose its rib cage. It also wears golden cuffs around its arms, with its hands having three fingers each, though the right one is grey while the left is white like the rest of its body.