The Great General of Darkness (Ankoku Daishogun) is a major villain in the Mazinger franchise. He first appeared in the last episode of the classic Mazinger Z series and was a main antagonist in the sequel Great Mazinger.

He's the supreme commander of the Mykene empire's army and the right hand of the Emperor of Darkness.

In episode 30, He challenged Tetsuya to a duel with Great Mazinger and he was eventually defeated for good, only to be replaced by the Great Marshall of Hell, which is actually a revived Dr. Hell.