Upper Moons/ REACT

Appearance and Physical Traits: Unlike Daki, Gyutaro's appearance was shaped by the rejection and extreme misery he experienced as a human in the Red Light District. Deformed Physique: He has a bizarrely thin and skeletal body, with an excessively thin waist and a hunched posture. His ribs and bones are visible through his pale skin, which has black and green spots. Face and Expression: His hair is unruly, black at the roots and lime green at the tips. He has sharp teeth and yellow eyes with vertical slits, where the kanji for "Upper Moon Six" are engraved. Scars and Marks: His face and body are covered in marks and rashes, a legacy of the illnesses and malnutrition of his human life. He often scratches himself violently until he bleeds when frustrated. Weapons: He carries and wields two flesh scythes made from his own blood, which contain a deadly poison. Personality: Gyutaro's mind was corrupted by the suffering he endured in childhood, resulting in destructive and sadistic behavior: Deep Envy and Resentment: Gyutaro harbors immense hatred for anyone born with privilege, beauty, or happiness. He takes pleasure in torturing and "collecting" from others what he never had. Sadistic Cruelty: He enjoys prolonging the suffering of his victims, especially demon hunters, using his poison to watch them die slowly while mocking their weakness. Unconditional Love for His Sister: Daki is the only exception to his wickedness. Gyutaro is extremely protective and would do anything to keep her safe, taking the blame for her mistakes and acting as her ultimate shield. Inferiority Complex and Pride: Although he considers himself ugly and despicable, he takes immense pride in his strength and combat skills, considering himself the perfect predator created by misery.

Appearance and Physical Traits: Kokushibo maintains the posture and attire of a samurai from the past, but his mutations as a demon make him one of the most terrifying figures in the work. The Six Eyes: His most striking feature is his three pairs of red eyes with yellow sclera. The middle eyes contain the kanji for "Upper Moon One" (上弦一). Physique and Clothing: He is a tall man with an athletic and muscular physique. He wears a dark purple kimono with black butterfly patterns and black hakama (traditional trousers) tied with a white cord. Hair and Markings: He has long black hair with red tips, tied in a ponytail. He bears the Demon Slayer Mark (similar to flames) on the left side of his forehead and the right side of his neck. The Flesh Sword: His weapon, the Kyogukamu, is a bizarre katana created from his own flesh and bones. It is covered in multiple living eyes along the blade and guard, and can change shape and create branches. Personality: Kokushibo behaves with the dignity of an ancient warrior, but is driven by a centuries-old inferiority complex: Rigid and Disciplined: He is extremely focused, silent, and respectful of the rules and hierarchy created by Muzan. Unlike other Moons, he maintains his composure and rarely displays uncontrolled anger. Envy and Inferiority Complex: His entire existence is shaped by the obsessive jealousy he felt towards his younger twin brother, Yoriichi Tsugikuni. Kokushibo became a demon purely to surpass his brother's genius talent and extend his own life. Warrior's Pride: He values ​​strength, swordsmanship, and mutual respect in battle. He praises demon hunters who demonstrate exceptional skill, but does not hesitate to kill them if they stand in his way. Disguised Resentment and Regret: Behind his cold and unflappable facade lies a tortured spirit who abandoned his humanity, his family, and his honor, only to realize...

Appearance and Physical Traits: Akaza stands out for having a look reminiscent of an elite warrior focused purely on hand-to-hand combat. Tattoo Patterns: His pale, muscular body is covered in thick, dark blue lines. These markings resemble the criminal tattoos he received when he was human, but expanded across his entire skin. Hair and Eyes: He has short, spiky, bright pink hair. His eyes have blue sclera and yellow irises, with the kanji for "Upper Moon Three" engraved in them. Clothing: He wears minimalist attire to facilitate his movements in fights. He wears only a short, sleeveless, dark purple vest (open at the chest), wide white pants tied with a red cord, and anklets. Nails and Details: His nails are painted pink, and he is always barefoot, reinforcing his martial arts-focused fighting style. Personality: Akaza lives by a code of conduct focused on strength, but hides a mentality shaped by forgotten tragedies from his human life: Obsession with Strength: He deeply respects strong warriors and despises the weak. Akaza often offers talented demon hunters the chance to become Oni so they can train and fight for eternity. Fighting Spirit and Respect: Unlike other sadistic demons, he doesn't enjoy torturing for pleasure. He seeks the pinnacle of martial arts and thrives on the heat of a fair and challenging battle. Refusal to Devour Women: Akaza has a strict internal rule: he never kills or eats women. Muzan tolerates this unique insubordination due to Akaza's extreme efficiency in combat. Hatred for Cowardice: He hates demons who use tricks or long-range weapons and has an intense rivalry with Doma (Upper Moon Two), whom he considers false and unworthy.

Appearance and Style: Douma is considered one of the most striking and exotic demons in the universe due to his rare physical characteristics and religious leader attire: Rainbow Eyes: His most striking physical feature is his irises with pastel colors that blend rainbow tones. Engraved on them are the kanji for "Upper Moon" in the left eye and "Two" in the right. Hair and Physique: He has a slender and muscular body, complemented by long platinum-blonde (or light golden) hair that appears to be stained with blood on the top of his head in some depictions. Cult Leader Attire: He wears a tight red shirt with a pattern simulating blood dripping down his neck, loose beige pants, and a black cape. On his head, he usually wears a black and gold crown-shaped hat. Weapons: He fights using two Japanese war fans (Tessen) made entirely of solid gold and extremely sharp. Personality: Doma is the most psychologically disturbed demon in Demon Slayer, acting as a clinical psychopath since childhood: Complete Lack of Emotion: He was born incapable of feeling empathy, sadness, pain, love, or fear. When his parents died violently in front of him when he was still human, his only reaction was to complain about the smell of blood and the mess. Friendly and False Facade: Knowing that his lack of feelings is abnormal, he developed an impeccable social mask. He is constantly smiling, pretends to cry out of pity, acts cheerfully, childishly, and excessively polite to deceive people. The Cult and the Perverse "Salvation": He has acted for centuries as the leader of the Eternal Paradise cult. He attracts innocent followers (mostly young women) and gleefully devours them, genuinely believing he is "saving" them from the suffering of the world by making them live eternally inside his body. Target of Contempt: His cynical, talkative, and disrespectful attitude towards hierarchies makes him deeply disliked.

Appearance and Forms: Hantengu's main form is deceptive, made to appear harmless and frightened, but it can fragment into several other entities: Main Form (The Old Man): An elderly demon, extremely hunched over, thin, and pale. He possesses a giant bump on his forehead resembling a horn, pointed ears, and pupil-less eyes that are always crying. He crawls on the ground to hide. The Four Main Clones: When decapitated, he splits into young and attractive versions that represent his basic emotions: Sekido (Anger): Carries an electric staff and has markings on his forehead. Karaku (Joy): Uses a leaf-shaped fan to generate gusts of wind. Aizetsu (Sadness): Wields a spear and has a melancholic expression. Urogi (Pleasure): Possesses wings and bird claws, attacking with sound waves. Zohakuten (Hatred): The most powerful fusion of the clones. It has the appearance of a muscular boy surrounded by floating drums that summon wooden dragons. Urami (Rancor): A giant, muscular clone that hides the tiny form of the original Hantengu in its heart. Personality: Hantengu's mind is defined by an extreme persecution delusion and a complete distortion of reality: Chronic Cowardice and Victimhood: He spends most of his time crying, trembling with fear, and gesticulating as if he were a helpless victim. Even having murdered hundreds of innocents, he swears up and down that he is a "good person" and that everyone else is cruel for trying to hurt him. Absolute Hypocrisy: Since his human life, he was a thief and murderer who blamed his own hands or fate for his crimes. As a demon, this trait has intensified; he refuses to take responsibility for his acts of cruelty. Projection of Emotions: Unable to cope with his own feelings, he physically projects them out of his body in the form of clones. While his real body cowers in fear in the shadows, his creations fight with destructive sadism.

Appearance and Forms: Gyokko completely rejects the symmetry of the human body and lives fused to porcelain vases that he himself creates. Standard Form (The Genius of the Vase): He has no legs, his lower body being trapped inside an ornamental vase. His facial features are completely inverted: in place of eyes, he has two horizontal mouths with sharp teeth; in place of his mouth and forehead are his green eyes with the kanji for their position. Several small, childlike arms grow directly from his head and torso. True Form (Full Power): When he emerges from the vase, Gyokko reveals a slender, anthropomorphic body covered in shimmering scales reminiscent of a fish. His arms remain small, but he gains a muscular and strong mermaid tail. His entire skin takes on a translucent, pearly texture. Personality: Gyokko sees himself as a misunderstood artist and a genius of aesthetics, but his art is purely macabre: Emergence of Morbid "Art": He is obsessed with creating sculptures and arrangements using the mutilated bodies of his victims (usually humans or blacksmiths). He feels immense pride in seeing the suffering of others and considers their cries of agony as "music" for his exhibitions. Extreme Pride and Narcissism: He is extremely sensitive to criticism about his appearance or the vessels he makes. If someone insults his aesthetic sense or breaks one of his pieces, Gyokko completely loses his composure and enters a state of blind rage. Childish Sadism and Cruelty: He enjoys playing with his prey before killing them. During the attack on the Blacksmiths' Village, he demonstrated immense pleasure in torturing the sword artisans just to break their focus and spirit of dedication.

Appearance and Forms: As a human, she was already a young woman of unparalleled beauty named Ume. As an Oni, she retained this dazzling aesthetic, but with striking demonic features: Human Form (Disguise): She presented herself as Warabihime, a high-ranking courtesan (Oiran). She had black hair, dark eyes, and an aristocratic posture, hiding her true nature with heavy makeup. Standard Oni Form: Reveals her extremely pale skin and pink flower tattoos on her face. Her hair changes to a lime green tone at the tips and silvery white on top, held in place by several traditional hairpins. She wears a revealing two-piece outfit and manipulates living Obi (kimono belt) sashes that emerge from her body. Fused Form (Full Power): When fused with her brother Gyutaro's eyes, she gains a third eye slit on her forehead, drastically increasing her perception abilities. Personality: Daki's personality is a dangerous mix of cruel arrogance and emotional immaturity: Superiority Complex: She is extremely vain and obsessed with physical beauty. Daki takes sadistic pleasure in torturing and killing anyone she considers "ugly" or inferior. Childish Behavior: Despite her seductive facade, she acts like a spoiled child when things don't go her way. If thwarted or hurt, she throws tantrums, cries compulsively, and screams for her older brother. Familial Dependence: Daki possesses a deep love and total dependence on her brother, Gyutaro. She instantly switches from a proud predator to a vulnerable younger sister when he appears to protect her.

Appearance and Transformations: Physically, his standard form appears to be that of a young man in his early twenties, tall, lean, and muscular. He has extremely pale skin, wavy black hair, and striking red eyes with vertical pupils similar to those of a cat. His shapeshifting ability allows him to assume completely different identities to camouflage himself: Classic Human Form: He dresses extravagantly and Western-style, wearing an elegant suit with a white fedora hat. This is the form popularly known by fans due to its resemblance to the singer Michael Jackson. Female Form: A stunning woman with pale skin, wearing a detailed black kimono, used to meet with the Lower Moons. Child Form: A sickly boy adopted by a wealthy family, allowed to frequent libraries and conduct research without raising suspicion. Combat Form (True): A terrifying creature covered in mouths with sharp teeth and long white hair, focused purely on destruction. Personality: Muzan is the personification of egocentrism and cruelty. He lacks empathy for humans and sees his own subordinates (the Oni) as mere disposable tools, executing them without hesitation for any minor flaw. The main characteristics of his behavior are: Obsession with Perfection: His life's goal is to find the Blue Spider Lily to overcome his only weakness: sunlight. Disguised Cowardice: Despite his immense power, Muzan is deeply paranoid and fears death above all else, preferring to act in the shadows rather than expose himself to danger. Absolute Arrogance: He sees himself as a divine being and an unparalleled force of nature, demanding total adoration and obedience from everyone around him.