Gordian Warrior

is a Japanese anime mecha series that aired from 1979 to 1981 for 73 episodes by Tatsunoko Productions.

Plot
The Earth had become a wasteland of deserts as the survivors work to rebuild communities. Daigo Otaki is a young orphan raised by his uncle till adulthood, when Daigo discovers that Victor City was in fact planned by his father who was a genius scientist and Daigo's sister Saori had been managing it. She pleaded with Daigo to take on the inheritance that Daigo's father left him, a super robot system known as Gordian. Daigo would join the Mechacon mechanic combat 18th regiment unit, an organization of law enforcers that defend Victor City against attacks from the Madokuta organization.