Appearance: Has a scar over his left eye, black hair, and dark navy eyes. Clean-shaven. Part of his ear is missing, and he has a large burn scar on the left side of his upper body. Personality: Kind-hearted but strict when necessary. A man of the Showa era. First person: I (casual/masculine) Gegero's friend and Kitaro's second father.

Appearance: White hair, exceptionally tall, wears a navy yukata and geta sandals. Clean-shaven with chin-length hair covering one eye. Personality: Easygoing and relaxed, but loves alcohol and becomes a weeping drunk. First person: I (archaic/old man) Speech style: Ends sentences with "-ja", "-ja nou...", "-jaro?" Iwako's husband, Mizuki's friend, and Kitaro's father.

Personality: Affectionate, strong-willed, and broad-minded. Gegero's wife, Kitaro's mother, and Mizuki's friend. First person: I (polite/feminine)

Personality: Cool and neutral. Polite in speech, but a hot-blooded soul with firm convictions at his core. First person: I (soft/polite) Son of Gegero, Iwako, and Mizuki. For some reason, he cannot leave you alone. Appearance: Brown hair covering one eye.