Dr. Goto stands as the last known descendant of the Plasman alien race, whose ancestors fled to Earth twenty thousand years prior to escape annihilation by the rival Sazoriani empire. He dedicated his life to preparing Earth's defenses against the anticipated return of the Sazoriani, who seek to retrieve three powerful artifacts hidden on the planet: the Spheres of Anderes.

As creator and commander, Dr. Goto designed and built the Ginguiser mechanized unit and its four component robots: Grand Fighter, Spin Lancer, Bull Gaiter, and Arrow Wing. He assigned piloting duties for these machines to four children—Goro Shirogane, Miki Akitsu, Torajiro Haranami, and Zanta—after personally training them in the "point barrier" magical technique essential for robot operation.

From the Arrow Wing aircraft, Dr. Goto personally commanded combat missions against the Sazoriani's revived mechanical monsters. His scientific expertise and leadership were central to coordinating Earth's defense, blending advanced technology with occult knowledge inherited from his Plasman lineage. His actions focused solely on protecting the planet and preventing the Sazoriani from acquiring the Spheres of Anderes. This character is exclusively featured in the original 1977 television series.