Arbitro is a major supporting character in Togainu no Chi, serving as a high-ranking figure associated with the control and administration of the illegal combat game in Toshima. He is elegant, cold, and highly manipulative, often appearing calm while exerting significant influence over events and people around him. Arbitro acts as a gatekeeper and authority within the series’ violent underworld, helping shape the progression of the story and the fates of the fighters. His refined demeanor contrasts sharply with the brutality of the setting.