Seigi no Symbol: Condorman (1975)

Isshin Mitsuya, a member of the peace organization "Flags of the World", loses his life in the Nevada hinterland to protect the eggs of the Dragon Condor, the guardian deity of the ancient Mu Empire. Dragon Condor dies after seeing the birth of Golden Condor, but old man Taba, a sorcerer, combines Mitsuya Isshin's heart of love and justice, Dragon Condor's steel body, and Golden Condor's relentless fighting spirit to create Superman Condorman...