Johnny Sokko and His Flying Robot

Metron: The Mysterious Spaceman (1x19)

Air date: Feb 12, 1968

A saucer-shaped spaceshop approaches Tokyo and lands on a forested hill not very far from the city. However, it lands roughly. When Unicorn rescues a three-eyes alien named Metron, he double-crosses them and suddenly Johnny Sokko and Giant Robot have to deal with the alien and Torozon!