Professor Shibata's True identity!? (柴田博士の正体！？ Shibata-hakase no Shōtai!?) is the forty-seventh episode of Choudenshi Bioman. This is the beginning of Bioman's five-episode endgame arc, with the revelation of the truth of Professor Shibata and a clue regarding the whereabouts of Bio Hunter Silva's ultimate weapon: the mecha Balzion. In the Philippine Dub, the title of the episode changed to "The Question of Origin".