Doma

 A sadistic demon who holds the position of Upper Moon Two. As a child, he was seen by his parents as a perfect, blessed child, thus they started a religious cult around his figure. After his parents' deaths, he assumed control of the cult and after being transformed into a demon by Muzan, he started eating his followers. One member of his cult was Inosuke's mother, who ran away from him upon learning his true nature, just to be later killed by him. He also killed Shinobu's older sister Kanae. In a desperate measure to defeat him, Shinobu administers a massive dose of Wisteria in her body and allows herself to be consumed by him. The weakened Doma is later killed by Kanao and Inosuke.