Enemy name Japanese name Alternate name(s) Elemental type Hit points Score Stage(s) Appearances Other Sprite Constructor X is the fourth boss in Bomberman Generation. He is the boss on Nekki Moon, and is a large robot made up of two smaller ones. The two smaller robots can talk and refer to each other by their brotherly relationship. The player is treated to a sequence where the two robots transform and become the much larger boss. Constructor X is widely considered to be the best boss in the game.