Bone Bone

Bone Bone is an boss enemy in New Super Mario Bros. Bowser's Revenge. It appears that Bone Bone is an alter-ego of Boom Boom. Like Dry Bowser, Bone Bone is a dry edition of Boom Boom.

In the 11th World, Mario,Luigi,Yellow Toad and Blue Toad have to fight it. Bone Bone can receive abilities to defeat the Bros.(except for 11-Tower 1 where he flails his arms.)

Powers
11-Tower 2: Spinjump

11-Tower 3: Jump

Trivia

 * He is the first Boom Boom alter-ego in the Mario universe.
 * Bone Bone is the only enemy not to be served by Bowser, but by Dry Bowser.