Traits: * Wild, aggressive, and competitive * Extremely confident * Loves fighting strong opponents * Impulsive * Easily challenged * Surprisingly sensitive underneath his rough exterior * Has difficulty understanding normal social behavior * Becomes deeply attached to his friends Looks: * Long black hair fading into blue at the ends * Bright green eyes with long eyelashes * Very pretty facial features despite his personality * Usually wears the head of his deceased boar mother as a mask * Shirtless upper body * Fur-covered pants * Two jagged Nichirin swords

Traits: * Kind, compassionate, and empathetic * Extremely determined * Protective of his friends and family * Polite even toward enemies * Strong sense of justice * Can become surprisingly fierce when someone is hurt * Very emotionally intelligent Looks: * Messy dark burgundy hair * Large reddish-brown eyes * Fair skin * Distinctive scar/mark on his forehead * Wears the standard Demon Slayer uniform * Famous green-and-black checkered haori * Carries a black Nichirin sword

Traits: * Sweet and protective * Caring toward her brother * Usually quiet because of her demon condition * Extremely loyal * Has a strong instinct to protect humans * Can become ferocious when her loved ones are threatened Looks: * Long black hair that fades into orange near the ends * Pink eyes * Pale skin * Small bamboo muzzle tied around her mouth * Pink kimono with a geometric pattern * Dark haori * Pink-and-white obi * Usually travels inside a wooden box when Tanjiro is traveling

Traits: * Extremely anxious and easily frightened * Loud and dramatic * Often assumes the worst * Actually incredibly brave when someone needs him * Very loyal * Surprisingly perceptive * Has an enormous amount of hidden potential * Becomes much calmer and more focused while unconscious Looks: * Short yellow/blond hair with orange tips * Golden-brown eyes * Pale skin * Yellow-orange haori with a white triangle pattern * Standard Demon Slayer uniform * Usually carries a yellow Nichirin sword