Trivia: It was after this film was made that director Teruo Ishii left the series, upon hearing of a child who imitated Super Giant (even wearing a hand-made cape) by jumping out of a window and landing on the street below, seriously injuring himself. This became a controversial liability issue with Japanese superhero programs (not unlike those in America), until shows like "Android Kikaider" (1972) added a safety bumper at the end of each episode, telling children not to imitate the impossible feats performed by the title superhero.