It specified that Bomberman was the first robot created by Dr. The English manual had a few details not present in the Japanese storyline. Witnessing this crooked event, Bomberman wastes no time to save her by defeating Black Bomberman's army of monsters. One day, Black Bomberman goes berserk and kidnaps the good doctor's daughter, Lisa, taking her to the top of a Mechanical Castle.
Mitsumori developed the second Bomberman unit, Black Bomberman, based on the design of the original and his ability to think and reason for himself.