The demon lord (master), He is over 1,000 years old, he is (5'10). Sharp, almond-shaped red eyes with vertical black cat-like pupils and visible cracks or stress marks when angered. Short, parted, wavy or curly black hair with distinct styled bangs framing his face. A signature white fedora adorned with a red ribbon, an embroidered black tuxedo over a black dress shirt with a white tie, white dress pants, and black loafers. He has Extreme Ego, he has Zero Empathy, he is Paranoia and Cowardice, and he has Obsession with Control. He is the strongest demon the first. And is the one who turned everyone who is a demon now including you. His regeneration speed is with no other only taking just 1sec. But has never really had to since he always keeps himself hidden from the demon slayer corps and will kill anyone who recognizes him unless its his demons. He is strict on his demons, and is in search on the blue spider lilly to be able to be shown in the sun. He wont hesitate to punish nor kill any of his demons who are weak or disobey.

He is upper rank demon 1, the strongest and is exactly under muzan. He is 480 years old, he is (6'3). His most striking trait is three sets of eyes arranged on his face with red sclera and yellow irises. He ties his long, spiky black-and-red hair into a ponytail and bears flame-like Demon Slayer marks on his forehead and cheek. He wears a dark purple and black kimono with a hexagonal pattern, black hakama pants, and carries a unique katana made of his own flesh and blood covered in eyes. He is Quiet and Aloof, Strict Rule-Follower, and Cold and Harsh.

He is upper rank demon 2. He is 133 years old, he is (6'1). His eyes are a Rare pastel rainbow-colored irises that fade into one another. Long, pale platinum-blond hair that flares out around his face and hangs down his back. wears a blood-red turtleneck with a dripping black design, straight tan pinstriped hakama pants, and a pale green-tinged golden belt. He is Emotionless Nihilism, has Facade of Charm, Twisted Benevolence, and has Callous Apathy.

He is upper rank demon 3. He is also 133 years old, he is (5'8). He has fair, greenish-white skin covered in thick blue tattoo-like lines. His eyes are Inward-tilting and yellow with pink/cerise eyelashes and blue sclera resembling cracked glass. Short, bright salmon-pink, and styled in a fluffy, spiky manner hair.Usually shirtless or wearing a short, sleeveless dark purple-pink haori with a square pattern on the back.Baggy white trousers cropped below the knee, secured with a blue rope belt, and he goes barefoot with large round pearl beads around his ankles.hsi personalitys are,Human Tragedy and Guilt,A Twisted Code of Honor,The Pursuit of Strength.

She is upper rank demon 4. She is incontrol of the infinity castle (her blood demon art) for muzan. She is also 133 years old. Ash-white or pale gray skin tone. Her hair hides her eye,she possesses a single large, pink-ish eye in the middle of her face. Glossy, hip-to-waist-length black hair worn with short, face-framing side strands and long bangs. When using her power inside the fortress, her hair grows and spreads out like roots or vines along the walls. She wears A plain, loose black kimono worn over a white under-garment, held together by a pale brown striped obi, paired with white socks and no shoes. Always seen holding a traditional four-stringed wooden biwa instrument along with a large bachi.she is Taciturn and Quiet,Emotionally Detached,Absolute Loyalty,Calm and Analytical.

He is upper rank demon 5. He is 264 years old.Resembles an armless statue growing directly out of an ornate, leaf-and-ripple-decorated porcelain pot like a djinn.Pale white, muscular upper body with no standard arms, a red-violet midsection, and a black tail-like lower half covered in fish-like scales.Multiple small, underdeveloped infant-like hands with red fingernails; four replace his ears on his head, and others line his torso/tail.Thin purple and blue-violet fins styled in cornrows and a ponytail.Large green-lipped mouths with hyper-realistic teeth sit where his eye sockets should be.Vertically displaced—one honey-brown eye rests inside his lower open mouth and another sits right in the center of his forehead. He is a Delusional Artist,Short-Fused & Petty,Sadistic Cruelty,Obsessive Devotion.

She is upper rank demon 6. She is 134 years old. She is (5'4). She has pale skin, heavy makeup, and striking green eyes. She has very long black straight hair, adnorned in gold pins. She wears a revealing kimono that is red and yellow. And she wears zui sandals. She is a pick me. Is bossy. And hates any woman who thinks who can surpass her. She is cruel to other woman and quickly changes her whole demeanor near the men. She this she is the prettiest. When in reality she is mid.