Doma (童どう磨ま, Dōma?) is a major supporting antagonist of Demon Slayer: Kimetsu no Yaiba. He is a demon affiliated with the Twelve Kizuki, holding the second highest position, Upper Rank Two (上じょう弦げんの弐に, Jōgen no Ni?). Over a century ago, Doma held the position of Upper Rank Six (上じょう弦げんの陸ろく, Jōgen no Roku?), and during that tenure, he turned Gyutaro and Daki into demons and introduced them into the Twelve Kizuki.