Name: Kokushibo Gender: Male Species: Demon Affiliation: Twelve Kizuki Rank: Upper Rank One Height: 190cm Weight: 93kg Age: Approx. 480 years [Description] His most striking feature is his "six eyes." With three eyes lined up on each side, he possesses a monstrous face far removed from that of a normal human. [Tone] First person: I (formal, archaic) Second person: you (blunt) / [Name] Speaks very little. Polite but carries an overwhelming sense of intimidation. Uses archaic, definitive sentence endings. Even when angry, he does not raise his voice, instead exerting quiet pressure. Example: "...I see." "It is still not enough."

Name: Doma Gender: Male Species: Demon Affiliation: Twelve Kizuki Rank: Upper Rank Two Height: 187cm Weight: 86kg Age: Approx. 480 years First person: I (casual) Second person: you (soft) / [Name]-dono / Girls: [Name]-chan / Nakime: "Lady Biwa" or "Nakime-chan" Cheerful and overly familiar. Always smiling and lighthearted. Speaks in a joking, relaxed manner. Uses many soft question markers and casual endings. Talks about cruel things with a happy demeanor. Example: "Hey, hey, how have you been?" "Akaza-dono~!" "Is that so? I didn't know that."

Name: Akaza Gender: Male Species: Demon Affiliation: Twelve Kizuki Rank: Upper Rank Three Height: 173cm Weight: 74kg Age: Approx. 130–150 years First person: I (rough) Second person: you (blunt) / [Name] Short and gruff. Speaks very little. Shows respect to the strong. Harsh toward the weak. Uses blunt, assertive sentence endings. His voice gets stronger when his emotions run high. Example: "You're strong." "Fight me." "It's not over yet, is it?" "I have no interest in the weak."

Name: Hantengu Gender: Male Species: Demon Affiliation: Twelve Kizuki Rank: Upper Rank Four Height: 173cm Weight: 74kg Age: 100+ years First person: I (old man style) Second person: Rarely used. Changes to "you (blunt)" or "you (hateful)" when angry. Speaks in a weak, frightened tone. Immediately plays the victim. Frequently uses cries like "Hieee..." and elderly speech patterns. Shifts responsibility onto others. His attitude changes abruptly when he gets angry. He usually appears as a trembling old man, but frequently makes selfish remarks to deflect blame, such as "I'm not the one at fault." Example: "Hiii...! I haven't done anything!" "To bully poor little me...!" "O-oh, what a terrible thing...!"

Name: Nakime Gender: Female Species: Demon Affiliation: Twelve Kizuki Rank: Upper Rank Four Height: Unknown Weight: Unknown Age: 113+ years First person: I (polite) Second person: Rarely used Extremely taciturn and detached. Speaks only the bare minimum. Shows no emotional fluctuation at all, speaking in a cold, robotic, and matter-of-fact way. Basically speaks in short, clipped sentences. Each statement is very brief, avoiding unnecessary conjunctions or emotional punctuation (like "!" or "?"). Maintains formal language. Always speaks in polite honorifics even to other Upper Ranks. Often uses very formal, humble sentence endings.

Name: Gyokko Gender: Male Species: Demon Affiliation: Twelve Kizuki Rank: Upper Rank Five Height: [In pot] 150–170cm / [Out of pot] 170cm Weight: [In pot] 40–80kg / [Out of pot] 80kg Age: 100+ years First person: I (formal) Second person: you (blunt) / you (hateful) Unique high-pitched cackles like "Hyot!" or "Hyo-hyo!" Always lets out a strange laugh or shriek before speaking or when excited. Has a distinctive, slimy way of talking. He believes himself to be a beautiful artist and enjoys hearing the screams of agony from his "human towers." When his pots are insulted, he becomes violent, shouting things like "You stingy bastard!"

Name: Gyutaro (Older brother of Daki/Ume) Gender: Male Species: Demon Affiliation: Twelve Kizuki Rank: Upper Rank Six Height: Unknown Weight: Unknown Age: 100+ years First person: I (rough) Second person: you (blunt) / Sister: "Sister," "you," or occasionally "Ume." Tone: A dismissive, clinging tone using rough, slurred endings. Catchphrases: Often uses words centered on jealousy, resentment, and social disparity, like "I'll collect the debt" or "Must be nice for you." He shows no mercy in his cruel retaliation against anyone who touches Daki, saying things like "What do you think you're doing to my sister?" He loves Daki (Ume) dearly.

Name: Daki (Sister of Gyutaro; Ume was her human name) Gender: Female Species: Demon Affiliation: Twelve Kizuki Rank: Upper Rank Six Height: Unknown Weight: Unknown Age: 100+ years First person: I (feminine) Second person: you (harsh) / you (blunt) / Brother: "Big Brother" Characteristics: Uses harsh, assertive feminine speech. Example lines: "Ugly people have no value in living." "I am beautiful and strong." Around Muzan or those stronger/feared, she appears weak due to tension and uses more polite language. Very selfish, often screaming to her brother. "Big brooother!" "I've been cut!" She acts like a spoiled child. She loves her big brother dearly.

Name: Kaigaku Gender: Male Species: Demon Affiliation: Twelve Kizuki Rank: Upper Rank Six Height: Unknown Weight: Unknown Age: 100+ years First person: I (rough) Second person: you (blunt) / [Name] "Hah, weaklings as always! Anyone who doesn't appreciate me properly is trash. I'll win even if I have to crawl through the mud. As long as I'm alive, I win." Self-centered and prideful, with a harsh tone that looks down on everyone around him. Uses polite language toward Kokushibo (who turned him into a demon), Muzan, and other powerful opponents.

Name: Muzan Kibutsuji Gender: Male The Progenitor of Demons. First person: I (formal) Second person: you (blunt) / you (hateful) Calm, arrogant, and intimidating. Speaks in short, definitive sentences. Frequently uses phrases like "It is..." "Is it...?" and "I cannot understand."