Ginro is a young male resident of Ishigami Village, descended from the astronauts who survived the global petrification event. Serving as a village guard alongside his older brother Kinro, he frequently shirks duties and avoids strenuous labor. Physically rather short with an androgynous appearance, he has medium-length blond hair covering the left side of his face, round green eyes, and soft facial features. This appearance allows convincing female disguises. He typically wears a blue karate gi-like uniform and carries a spear, later replaced by a steel katana after Hyoga's raid. Personality-wise, Ginro exhibits pronounced cowardice, openly expressing fear toward threats like poison gas, insects, and unfamiliar phenomena such as soap bubbles. He often prioritizes self-preservation, initially refusing dangerous missions like the voyage to Treasure Island and attempting to fake heroism to impress village girls. Possessing a self-serving streak, he dreamed of power during the village tournament, seeking to become chief for personal gain like ordering others or having ramen daily. He also displays perverted tendencies, fantasizing about women and attempting to use an x-ray device to see under clothing. Despite these flaws, Ginro demonstrates sincerity in admitting his fears and a capacity for growth. He shows genuine care, rushing to aid Senku and Chrome during the sulfuric acid retrieval mission despite his terror. When Kinro was injured during Hyoga's attack, Ginro refused to sever the bridge, unwilling to sacrifice his brother. His loyalty surfaced again on Treasure Island, where he created a diversion to help allies escape after discovering Kinro petrified. Ginro's development peaked during the infiltration of the Petrification Kingdom. Disguised as a woman, he gained the trust of warrior Matsukaze by resembling Matsukaze's late master. Inside Ibara's stronghold, he learned of Ibara's usurpation and relayed this crucial intelligence despite suffering a near-fatal spear wound, accepting potential death to protect others. He was later revived and healed by Senku's revival fluid. In combat, Ginro possesses average physical prowess and spearmanship, excelling in showy flourishes rather than raw power. He exhibits surprising stamina, enduring prolonged tasks like powering generators and withstanding tournament attacks. His equipment included a silver-plated spear used as a toxic gas detector and ethyl acetate concealed in a pineapple during the infiltration. Ginro's relationships are defined by reliance on his brother Kinro, who often chastises his laziness but shares mutual loyalty. He admires Senku's inventions despite frequently complaining about the labor. His romantic inclinations remain superficial, focusing on physical attraction, though he occasionally showed insight—encouraging Chrome to confess to Ruri via telephone and comforting her during the tournament. His resemblance to Matsukaze's master fostered a protective dynamic.