Synopsis

Aliens from the Vegan empire invade Earth and manage to capture Koji Kabuto. After interrogating him, they learn about Great Mazinger—which had been sitting in a museum as a symbol of peace alongside the original Mazinger Z. The invaders seize the opportunity and take control of it. Now it falls to Duke Fleed and Grendizer to fight back and stop Great Mazinger from being turned into a weapon against humanity.

Content compiled by AnimeList.moe from publicly available sources.

Genres