Rairyu is a fictional character from Yuusha-Ou GaoGaiGar. He is one of the three J-Ark pilots, serving as a supporting ally connected to the J-Project and the series’ larger mecha conflict. Rairyu helps operate the J-Ark alongside his companions, contributing to battles against the Zonder forces and other threats. As a side character, he plays a support role rather than a central protagonist role, but he is part of the team dynamic that expands the world and action of the series.