Doma

Doma (also spelled Douma) is Upper Rank Two of the Twelve Kizuki in Demon Slayer: Kimetsu no Yaiba.

He is a pale, extremely handsome young-looking demon with rainbow-colored eyes (displaying all the colors of the rainbow in an eerie way) and long platinum-blond hair. He almost always wears a calm, gentle smile and speaks in a very polite, friendly, and cheerful tone — which makes his true nature even more disturbing.

Personality-wise, Doma is completely emotionless and incapable of feeling genuine human emotions (including empathy, love, hate, or sadness). He views all humans as pitiful and believes he is "saving" them by eating them and granting them a painless death. His outwardly kind, caring, and almost cult-leader-like demeanor is entirely performative — he's basically a smiling, charismatic psychopath who finds everything amusing or mildly interesting at best.

He uses Blood Demon Art: Cryokinesis — the ability to create and manipulate extremely cold ice in combat, forming razor-sharp lotus flowers, freezing mist, ice clones, and other deadly frozen techniques.

Doma is one of the more memorable and unsettling Upper Moons due to his combination of cheerful politeness and total lack of humanity.