Chouseishin Gransazer, is a tokusatsu superhero TV series, produced by Toho Company Ltd., and Konami. The series aired on TV Tokyo from October 4, 2003, to September 25, 2004, with a total of 51 half-hour episodes. This series is the first of Toho's "Seishin " series. The premise of this series is similar to both the Super Sentai series and the manga/anime series Saint Seiya: there are 12 heroes, divided into four tribes, and each tribe has a giant transforming robot.