Dr. Saotome directs the Saotome Getter Ray Research Institute in this non-canonical crossover film. He retains his established identity as the creator of the Getter Robo series, spearheading the deployment of Getter Robo G to combat the Dragonsaurus threat. His institute coordinates closely with other organizations fielding Grendizer and Great Mazinger against the giant sea monster. Physically, he is a short, broad-bodied older man sporting short, messy gray hair and a goatee. He wears a white lab coat over a tan shirt, navy blue tie, and gray pants, paired with dark brown shoes. During the crisis, he provides operational support from his institute's command center. When the oil-consuming Dragonsaurus emerges from the ocean depths and advances toward Tokyo, his team pilots Getter Robo G as part of the combined super robot defense force. The Saotome Institute coordinates its efforts with the Photon Power Laboratory and Space Science Laboratory throughout this joint operation. His personality reflects his typical portrayal: a determined and formidable figure willing to take extreme measures for necessary outcomes, yet driven by a deep concern for humanity's safety facing this global threat. His documented role remains institutional and advisory, focusing on leading his institute's contribution without specific dialogue, personal interactions, or direct combat involvement. His background as the pioneering researcher of Getter Rays and creator of Getter technology underpins his institute's capabilities deployed against the Dragonsaurus. This legacy as a visionary scientist forms the basis for their actions, though it receives no explicit exposition within the film's narrative.