112화: 테츠로는 프로메시엄에 도달하여 사이보그 변신과 관련된 중대한 결정을 내린다.
1981년 3월 19일 방영

112
Tetsuro finally arrives at the final destination, Promethium. However, he still cannot choose whether or not to become a cyborg. He is given twenty-four hours to make up his mind. But, during that time, Tetsuro speaks to a cyborg who was sick of eternal life and attempts to commit suicide. This man tells Tetsuro of Maetel's true identity as Promethium's daughter. Then, his guide, Mirai, tells Tetsuro that he has been chosen to be a vanguard soldier of the Mechanized Empire. Tetsuro confronts Maetel... (Source: Crunchyroll)