Originally a companion of Momotarō in Japanese folklore, this character now enforces justice in Animal Hell following Momotarō’s failed invasion. Tasked with punishing souls who harmed animals, they collaborate with former allies—Kakisuke the monkey and Rurio the pheasant—under Hell’s strict hierarchy.

Physically, the character manifests as a spirited Japanese Spitz: small, fluffy, and white, adorned with a red-and-white corded collar symbolizing loyalty. Their energetic demeanor fuels enthusiastic duty performance, often expressed through vigorous attacks on sinners and candid, childlike remarks.

Within Hell’s bureaucracy, they maintain a professional yet admiring rapport with the chief deputy, aiding managerial tasks and strategic solutions. They operate under seasoned torturers Yasha-ichi and Cookie while balancing camaraderie with Kakisuke and Rurio, united by shared history. Collaborative duties extend to entities like the rabbit torturer Mustard, focusing on specialized punitive assignments.

The spin-off manga *Shiro no Ashiato* expands their narrative, depicting daily Hell operations and adaptive problem-solving across diverse scenarios. Later developments reveal ambitions to refine their skills, such as utilizing Hell’s hot springs to boost operational efficiency, underscoring dedication to role advancement.

No human ties or reincarnation lore define their background; their identity centers wholly on post-folklore service in Hell’s punitive order.