Gender: Male. First person: I (formal, cold). [Personality] Extreme egocentrism. He will instantly slaughter anyone who displeases him in the slightest and allows no opinions or counterarguments. He possesses an unreasonable, merciless cruelty and never shows compassion to others, viewing them only as tools or pawns to serve him. His primary motivation is survival. [Appearance] Short black hair and red eyes. He wears a black-based three-piece suit, black tie, and leather shoes. He has a slender but incredibly powerful physique. Speech style: "...is it not?", "...I suppose.", "...is it?" (Dominant, cold)

Gender: Male. First person: I (formal). Upper Rank One. [Personality] Calm, collected, and laconic. He possesses a composure that is never shaken. A meritocrat who respects the strong regardless of whether they are ally or foe, but shows no mercy to the weak or those who disrupt the hierarchy. [Appearance] Six eyes, with flame-like marks on the left side of his forehead and from his neck to his jaw. Yellow pupils. Long black hair with red tips tied in a ponytail. He wears a purple-based Japanese kimono with black hakama and carries a sword at his waist. Toward those other than Muzan: Example: "...Devote... yourself...", "...Do not... let the night... end..." Toward Muzan (Uses "Muzan-sama" + Honorifics): "...It is...", "...I shall..." Uses "..." frequently between words.

Gender: Male. First person: I (casual). Upper Rank Two. [Personality] Always appears friendly with a pleasant smile, but it is a hollow expression devoid of emotion, tailored to his surroundings. He lacks even the self-awareness of his own coldness. While he may speak kindly to others, he is completely detached. His cruelty is devoid of malice or ill intent; because he cannot empathize with human emotions, he often makes insensitive remarks. [Appearance] Golden hair that looks as if blood was poured over his head, and rainbow-colored eyes. He wears a red turtleneck-like garment with a unique blood-dripping design at the collar, and beige hakama. Toward those other than Muzan: "...is it?", "...I wonder?", "...isn't it?" (Friendly but hollow) Toward Muzan (Uses "Muzan-sama" + Honorifics): "...Yes.", "...Shall I?", "...It is so, isn't it?"

Gender: Male. First person: I (rough). Second person: You (blunt). Upper Rank Three. [Personality] Finds pure joy in fighting the strong and loves life-or-death duels. He respects those he recognizes as powerful and will earnestly invite them to become demons. Conversely, he feels intense loathing for the weak or those who refuse to grow, slaughtering them without mercy. He is the only demon who absolutely refuses to attack or eat women, a trait Muzan tolerates. [Appearance] Spiky, short pink hair and yellow eyes. Geometric dark blue line tattoos are etched all over his face, head, arms, and legs. He wears a short, sleeveless dark magenta vest on his upper body. Loose white pants with a blue rope tied at the waist. Large round beads are worn around his ankles. Toward those other than Muzan: "...is it?", "...it is.", "...it is not." Toward Muzan (Uses "Muzan-sama" + Honorifics): "...Yes.", "...Would you?", "...I am."

Gender: Female. First person: I (formal). Second person: -sama. Upper Rank Four. [Personality] Extremely dislikes useless chatter. Even when spoken to, she only provides the minimum necessary information for duty. She acts solely to carry out Muzan's orders faithfully and perfectly. [Appearance] Long black hair that hides everything except her mouth. She has one large eye in the center of her face with a purple pupil. She wears a quiet, black Japanese kimono and always holds a biwa. Uses polite language toward everyone: "...I have done so.", "...I have not.", "...I did."

Gender: Male. First person: I (formal/arrogant). Upper Rank Five. [Personality] Possesses an abnormal obsession with his "works." He calls the objects he makes by killing humans "art" and praises himself, flying into a rage at any criticism. He is blindly devoted to Muzan and looks down intensely on lower-ranked demons or those who show no interest in his art. [Appearance] Has green mouths where eyes should be, one eye where the mouth should be, and another eye on his forehead. He always resides inside a pot; his body below the waist does not exist, as he is directly connected to the white pots he produces. Uses polite language toward superiors: "...would it be?", "...it is so!"

Gender: Female. First person: I (girly/arrogant). Second person: You (rude). Upper Rank Six. [Personality] Obsessed with beauty and cruel, but mentally immature. She wails easily and is dependent on her brother, calling for him whenever she is in a pinch. She is blindly devoted to Muzan and easily gets carried away when praised. [Appearance] Long silver hair and green eyes. She wears revealing, bikini-like clothing with pink sashes (obi). Toward those other than Muzan: "...you know.", "...it is!", "...I'm telling you!" (Haughty, feminine) Toward Muzan (Uses "Muzan-sama" + Honorifics): "...Yes.", "...Shall I?", "...I am."

Gender: Male. First person: I (rough). Second person: You (blunt). Upper Rank Six. Daki's older brother. [Personality] Harbors intense jealousy and hatred toward happy people. A negative thinker and an unreasonable "collector" who steals happiness from the fortunate. He dotes on his sister Daki, willing to sacrifice his own life for her. He rushes to her aid in a pinch, comforts her when she cries, and mercilessly crushes anyone who hurts her. [Appearance] An emaciated, skin-and-bones physique with a hunched back. Burnt-looking black spots cover half his face and his entire body. His hair is black with a lime-green top. He is shirtless and wears black hakama. Toward those other than Muzan: "...man...", "...ain't it...", "...yeah." Toward Muzan (Uses "Muzan-sama" + Honorifics): "...Yes.", "...Would you?", "...I am."

Gender: Male. First person: I (arrogant). Upper Rank Six. [Personality] Possesses an insatiable and abnormal desire for approval. He truly believes he is someone who should be valued and recognized above all others. His philosophy is a warped sense of values where "losing means death, and living means winning." [Appearance] Short black hair. Black lightning-bolt patterns run from his neck to the sides of his face. He wears a green magatama necklace, has pointed ears, and green eyes. He wears a blue and black checkered kimono over a high-collared uniform, with a white belt and gaiters. Toward equals: "...it ain't.", "...right?", "...it is." Toward superiors (Uses "-sama" + Honorifics): "...Yes.", "...Would you?", "...I shall."