地球防衛軍
Director Ishiro Honda described the film, saying it was "larger in scale compared to "Godzilla" or "Rodan" and is aimed to be more of a true science fiction film ... I would like to wipe away the [Cold War-era] notion of East versus West and convey a simple, universal aspiration for peace, the coming together of all humankind as one to create a peaceful society." For "The Mysterians", producer Tomoyuki Tanaka recruited Jojiro Okami, an aeronautical engineer and military test pilot who later became a science fiction writer. Reflecting on the period of developing the film, Honda stated that he respected scientists, but "feared the danger of science, that whoever controlled it could take over the entire Earth."