Zero holds the rank of senior operative in Emperor Galfa’s mechanical empire, functioning as the sovereign’s primary enforcer. He spearheads critical missions, including escorting Prince Subaru to Earth after Spiral Castle’s failed incursion, with the objective of securing the empire’s seventh Data Weapon. A specialist in close-quarters combat, Zero wields a bo staff with precision, leveraging its tactical versatility in battle.

His operational conduct is defined by ruthless pragmatism, including the disposal of underlings like the Chips when deemed inefficient. Ambition drives him to orchestrate a coup against Subaru, aiming to usurp authority and solidify his position within the imperial hierarchy.

No details exist regarding his origins or personal history, his narrative confined to advancing Emperor Galfa’s strategic objectives through calculated, antagonistic maneuvers.