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Reideen the Brave, also known as "Brave Reideen" or "Heroic Raydeen", is a super robot anime series created by Tohokushinsha and Produced by Soeisha. It aired on Nihon Educational Television (now TV Asahi) from 4 April 1975 to 26 March 1976, with a total of 50 episodes. The series is marked as the first mecha anime series to introduce and popularize the concept of Transforming Mecha, which is also tied to its marketing gimmick in the 70's. imdb.com