Dry Bones is a skeletal version of the Koopa with very light grey bones. His gloves and boots are a pale teal-like colour, with the underside of his boots a brownish orange. The back of his shell is grey with cracks, and The front of the shell acts as his rib cage too. Dry Bones’s mouth has sharp, fang-like extrusion, unlike the normal Koopa, and Dry Bones’s eyes are gaping black eye sockets with yellow pupils. His arms, legs and tail are just bones and bend normally despite the lack of joints.
While Dry Bones doesn't appear as a playable character in Mario Kart 8, Dry Bones appear as obstacles in Bone-Dry Dunes. Dry Bones (as a playable character) returns in Mario Kart 8 Deluxe and the Dry Bones are still there in Bone-Dry Dunes.
Although Mario Kart DS was released after Mario Party 7 and Mario Superstar Baseball were, his voice actor, Toru Asakawa, who also voiced King Boo, did not voice him in the game. This is likely due to the voice clips in the game being reused from Mario Superstar Baseball.