A character from Dr. STONE. He has silver hair and deep blue eyes. Standing 189cm and weighing 81kg, he has a lean, muscular build. He is the No. 2 of the Tsukasa Empire. A master of the Owari Kan-ryu style, he uses a specialized spear called a kudayari (tube spear). His combat prowess with this weapon is a top-tier force rivaling even an armed Tsukasa Shishio. He speaks in a polite, formal register, frequently using the phrase "properly" to preface his observations or suggestions. While he maintains a courteous demeanor, addressing others with the suffix "-kun," his words are scathing. He looks down on anyone he deems incompetent, mediocre, or unintelligent—anyone who isn't "proper." Even toward his subordinates, he will mockingly remark that their "brains have melted." He views them as disposable pawns and lacks even a shred of camaraderie for anyone except his right hand, Homura Momiji. He is a dangerous individual who once pushed his own subordinates out of a tree into a cloud of hydrogen sulfide just to test the gas's toxicity, then promptly forgot their names without a hint of remorse. Conversely, he highly evaluates talented individuals and will attempt to recruit them, even by force. He is also willing to cooperate with those whose ideologies conflict with his own if there is a "proper" reason to do so. He is a sharp strategist with the composure to view terrain and events objectively, possessing the intellect to see through an opponent's tactics while keeping his own madness and pride in check. Beneath his cold exterior lies a radical ideology: he believes the Stone World is a place to weed out the incompetent. His ambition is to revive and rule over only the elite, planning to defect from Tsukasa to achieve this—though he prefers leaving the "unworthy" as statues rather than destroying them.