Hitoshi Hanyū leads the Shark motorcycle gang. He antagonizes Rei "Zero" Kano, engaging in frequent, violent confrontations with Zero and his associates. Hitoshi and his gang exhibit aggressive, threatening behavior, fitting the archetype of Japanese delinquents involved in crime. He stands as an evil counterpart to Zero, contrasting Zero's hidden integrity and harmless rebel facade with Hitoshi's overtly criminal and violent nature. Their conflict climaxes in a decisive showdown where Hitoshi is defeated, leading to his removal from the narrative.