|Oh! How Green was my Land|
|Season unknown, Episode 2|
|Air date||October 12,1975|
|Directed by||Tomoharu Katsumata|
|Koji Kabuto and Duke Fleed||Danger approaches the Makiba Ranch|
Koji wonders who rescued him in a Mazinger-like robot. The pilot had looked like Daisuke. When Koji tells him this, they break into a fight. Later in the afternoon, it starts to rain. In the Space Science Lab, Dr. Umon tells Koji about the story behind Daisuke and the new Mazinger by name Grendizer. When they finish, the Motherburn is detected on radar. Duke goes in Grendizer to stop them after leaving Koji unconscious when he tried to help in the TFO. After releasing Gamegame and immobilizing the mecha and came spiraling down uncontrollably. Giving up hope, Duke prepares to die, but Gamegame leaves Grendizer after the TFO stunned it with missiles. Duke pulls up and gets injured, Gamegame pounces on Grendizer but is destroyed by Space Thunder.