Dr. Hell

Dr. Hell is the main antagonist of Mazinger Z and the archenemy of Juzo and Koji Kabuto. A mad scientist bent on conquering the world he uses the Mechanical Beasts as well as a group of lieutenants he personally created to achieve his goal. He was killed in the final assault on his island fortress. However, he is later revealed to have been revived in Great Mazinger as the Great Marshall of Hell, the military commander of the Mycenae Empire with the death of Great General of Darkness.