マサ斎藤
Upon returning to New Japan in October 1982, Kobayashi was involved in a feud with Tiger Mask. Because of his anti-heroic actions, he became regarded as the "Tiger Hunter." He also allied with Riki Choshu, Masa Saito, and Killer Khan to form Ishin Gundan. As an Ishin Gundan member, he mostly teamed with Isamu Teranishi in tag team action, facing New Japan's loyalists in numerous encounters, most notably Tatsumi Fujinami, Kengo Kimura, Kantaro Hoshino and a young Nobuhiko Takada. In September 1984, Ishin Gundan left NJPW to form Japan Pro Wrestling (JPW).