up, as his mistress was not part of the script. In the original ending, in response to Keisuke saying he has nothing anymore, Karen asks if he has abandoned his dream of owning his own air service. Special effects The special effects were directed by Noriaki Yuasa. Yonesaburo Tsukiji, the effects director of the previous film, did not return due to leaving Daiei to form his own company. Yuasa began filming the effects on January 22, 1966, beginning with the Kurobe Dam attack scene. Effects photography wrapped on April 3, 1966, with the Lake Iwa battle. Effects filming lasted 73 days. Barugon's demise was originally intended to be filmed on the last day of production on April 2, 1966, however, the Barugon suit would not sink and delayed production for a full day. Suit creator Ryosaku Takayama (suit creator for the Ultraman series) removed the suit's head from the body, which allowed the prop to sink and complete production. Equis Productions, led by Masao Yagi and his family, created the film's scorpion props and the monster suits based on Akira Inoue's production designs. The Barugon suit was constructed by Takayama and detailed by the Yagi brothers. After returning to Tokyo, Takayama worked in Equis’ workshop to build full scale suits and miniatures of both monsters and a gimmick version of Barugon capable of spraying mist from its tongue. Takayama was assisted by Keisu Murase from Equis. Teruo Aragaki (suit performer for the Ultraman series) was sent to Daiei to perform in the Gamera suit. While no documents have been released revealing the Barugon suit performer, Japanese fantasy expert August Ragone deduced that it may have been Umenosuke Izumi, due to Izumi being Aragaki's second and assuming the Gamera role in later films. Effects engineer Hideo Arikawa supervised the operation of wire-operated props, miniatures, pyrotechnics, and the scorpion props. Due to his father's acquaintance with Eiji Tsuburaya, Yuasa was able to pull resources from Tsuburaya Productions for the film's effects. At times, Yuasa was forced to change set ups for effects shots when Tanaka would change his mind at the last minute. Yuasa protested to the studio chief after discovering that some of his effects footage was being cut from the assembly, stating, "I'm the director of special effects! Don't change this cut!" The shrieking sounds for the cave bats were originally produced for the rat creatures for the unproduced film