|Dr. Heaven/Juzo Kabuto|
|Family and Relations|| Koji Kabuto (Grandson),
Juzo Kabuto (Clone), Dr. Hell (Clone)
|First Appearance||Mazinkaiser: Legend of a New Majin|
Dr. Juzo Kabuto had been on an expedition on Bardos where he discovered an ancient civilization of Mechanical Gods that came from outer space. To help his research, Dr. Kabuto made two clones of himself. One of the clones revolted and became Dr. Hell, creating an army of Mechanical Beasts. The other clone suffered a burn and agreed to look after the original's grandchildren under his name. The original Dr. Kabuto went into hiding, taking the name Dr. Heaven and improved his clone's robot with an even more powerful version, Mazinkaiser.
Dr. Heaven looks similar to his clone but has a full head of hair and a goatee. He wears a buttoned white lab coat and unlike his clone stands up straight.
Dr. Heaven is much more sane than his clone and loves his grandson. When Koji needed help after Mazinger was destroyed, Dr. Heaven was prepared to come out of hiding to help him in his time of need.
Dr. Heaven is an accomplished scientist, having made his own Baron Ashura through advanced technology and created the Mazinkaiser to replace the destroyed Mazinger Z.
Dr. Heaven revealed himself to Koji after having his Baron Ashura appear before him and bringing Koji to his flying fortress. He explains the truth behind events that transpired on Bardos before giving his grandson Mazinkaiser to fight Dr. Hell.