Supermarionation a puppet hand, suspended by wires, operating the controls of "Thunderbird 1". The term "Supermarionation" was not coined until during production of later episodes of "Supercar". As a result, "Four Feather Falls" is often omitted from lists of Supermarionation productions. Two feature films based upon "Thunderbirds" were also made with Supermarionation: "Thunderbirds Are Go" (1966) and "Thunderbird 6" (1968). Numerous episodes of "Thunderbirds", "Captain Scarlet", and other series were also edited together (sometimes with the addition of new narration) to form movie-length features for VHS release and TV syndication in the 1980s. "The Secret Service" was actually a hybrid of
Captain Ultra (TV series) "Akakage" and "Giant Robo" (better known in the US as "Johnny Sokko and His Flying Robot"). Some Japanese fans also compare the looks of Captain Ultra to that of Captain Scarlet, the title hero of Sylvia and Gerry Anderson's Supermarionation series, "Captain Scarlet and the Mysterons" (which had been shown in Japan around the same time and was very popular). Captain Ultra (TV series) This series is based very loosely on "Captain Future", the pulp science fiction saga created by the influential Edmond Hamilton. This was not the only time his work was adapted in Japan: "Captain Future" was officially