. In 1964, there was a feature-length animated movie called "Mighty Atom, the Brave in Space" (鉄腕アトム 宇宙の勇者 , Tetsuwan Atomu: Uchū no yūsha ) released in Japan. It was an anthology of three episodes; "The Robot Spaceship", "Last Day on Earth" and "Earth Defense Squadron". The latter two were filmed in color.