Gold Bone is the main antagonist of Mii Force and the leader of his crew. He also serves as the game's final boss.
Goldbone first appears to the Mii Force Captain, telling him of his plans to soon rule the galaxy alongside his entire armada. Throughout the game, the Mii Force travel through several planets and areas, fight his entire army, including some other aliens, confronting him on very few occasions and eventually fight him at his base. There, he get's into a large mech and fights the squad. After they defeat him, he reminisces his defeat as it explodes, though with one last line of dialouge afterwards, it's possible he survived.