Ginro is a young guard of Ishigami Village, serving alongside his older brother Kinro. He possesses medium-length blond hair covering the left side of his face, round green eyes, and soft, androgynous facial features enabling convincing female disguises. He typically wears a blue karate gi-like uniform and carries a spear, later replaced by a steel katana. Pronounced cowardice defines Ginro; he frequently avoids dangerous tasks and physical labor, showing visible fear during confrontations like initially blocking Senku and Kohaku or panicking near sulfuric acid springs. He complains about exhausting work, celebrates labor-saving inventions, and considers fleeing threats such as the Tsukasa Empire. He demonstrates sincere self-awareness, openly admitting fears of soap bubbles, insects, and toxic fumes, occasionally expressing regret over his cowardice. Despite his fearfulness, Ginro exhibits strong loyalty and protective instincts toward close companions. He refused orders to cut a bridge when his wounded brother Kinro dangled precariously during Hyoga's attack. He later rushed to help Senku and Chrome collect sulfuric acid, overcoming terror to pull Chrome from a chasm. In a village tournament, he initially participated to protect Ruri from Magma, and his courage surfaces primarily when friends or family are threatened, like protecting Kinro from petrification with Suika's aid. Ginro also possesses a self-serving, opportunistic side. Learning Ruri would accept any tournament winner as her husband, he abandoned his protective motive to aggressively pursue victory for personal benefits like daily ramen and a harem. He meddles in others' romantic relationships, particularly Chrome and Ruri's, though his suggestions sometimes show insight, like proposing Chrome use the first telephone call to confess. He exhibits perverse tendencies, fantasizing about Ruri and Kohaku, imagining using an x-ray to see under women's clothes, and becoming distracted by Kohaku's breasts during serious moments. He enjoys showing off, especially to impress women, as when he pretended to swim after the departing Perseus ship to appear brave. Physically, Ginro has average combat skills among village warriors. His spearmanship emphasizes showy flourishes and feints, useful for infiltration. He demonstrates high stamina, spinning electrical generators with Kinro and enduring multiple hits in fights. He carried concealed ethyl acetate inside a pineapple under his dress during an infiltration without hindering movement. Though not elite, he contributed to group efforts like hunting alligators and once defeated Argo in the village tournament, aided by Senku's placebo effect tactics. Ginro's development shows gradual growth in confronting fears while retaining core traits. His actions during sulfuric acid retrieval and bridge defense illustrate his capacity for courage motivated by loyalty. However, his opportunistic and lewd behaviors remain consistent.