Juzo Kabuto

Grandfather of Kouji Kabuto he is the centurys authority on robot engineering and Photon Power research as well as a great inventor. He built the robot Mazinger Z for his grandson as a way of making up for causing the accident that killed his parents years before. According to Juzo this robot would allow Kouji to do as he pleases with the world even ruling it as a God or destroying it as the Devil.