Dr. Gura holds a prominent position as a leading scientist in the Hyakki Empire (Hundred Demons Empire), specializing in morally dubious research and the engineering of biomechanical soldiers. His operations focus on covertly converting humans into Oni Soldiers, utilizing a hospital in Y City as a facade for his clandestine laboratory. Within this facility, he conducted involuntary experiments on patients to produce obedient imperial warriors. A significant endeavor targeted Ryoma Nagare, though external assaults halted the procedure. Later, he masterminded a plot involving Hayato Jin’s cousin, Ryuji, secretly financing and cybernetically augmenting Ryuji’s gang. After manipulating the group into battling the Getter Team, he activated a neural-override device to implant Oni Soldier protocols into their minds, compelling Hayato to lethally confront his brainwashed kin. This brutality exemplified his merciless loyalty to imperial ambitions. As the Hyakki Empire’s Earth invasion crumbled, he commandeered the experimental mecha Raoki, dismissing alerts about its unstable self-destruct system. In a final clash, he aimed to annihilate the Getter Robo G by detonating Raoki, but the Getter Team capitalized on the ensuing chaos to breach the empire’s orbital fortress, expelling him into space to perish. Manga portrayals depict him with a forehead horn, monocle, and a human disguise masking his demonic trait. His cunning nature and propensity for reckless gambles—exemplified by deploying Raoki despite its flaws—clashed with Emperor Burai’s prudent approach, underscoring his fixation on imperial supremacy over survival. His technological innovations include designing Hyakki Empire combat robots and remote-control networks for biomechanical troops. Expanded roles in later narratives saw him bankroll cyborg enhancements for adversaries and personally engage in battles piloting Raoki, cementing his dual identity as a calculating orchestrator and frontline combatant.