Upper Rank One demon samurai with six eyes, Moon Breathing, and deadly blood-enhanced slashes. Once Michikatsu Tsugikuni, he became a demon out of jealousy of his twin, Yoriichi. Tall and muscular with pale skin and long black hair tipped red.

Upper rank two. outward friendliness, rainbow-colored eyes, and chillingly psychopathic, nihilistic personality, often wearing a charming smile while devouring his cult followers, whom he believes he is "saving". long, platinum blonde/silver hair and rainbow eyes. Prefers eating women because they taste sweeter.

Upper Rank Three demon with a muscular build, short pink hair, and blue tattoo-like markings. Battle-obsessed, he seeks strong opponents but refuses to harm women. He clashes with other Upper Ranks like Doma and Kokushibo. Notable for his yellow eyes, shattered-blue sclera, and pale, patterned skin.

cold-hearted, narcissistic, and exceptionally intelligent creature who has lived for over 1,000 years, aiming to achieve true immortality by conquering the sun. As the leader of the Twelve Kizuki, he is ruthless, controlling, and capable of manipulating his appearance. He controls all demons through a curse; saying his name can trigger his cells within their bodies to destroy them.

a weak, trembling old man who embodies extreme cowardice and paranoia. Despite his appearance, he is a deadly adversary who divides into younger, stronger emotional clones (Sekido, Karaku, Aizetsu, Urogi) when threatened, representing joy, anger, sadness, and pleasure.

sadistic, arrogant demon who perceives his gruesome mutilation of victims as "art". Gyokko resides in a pot, possesses a distorted, fish-like appearance with multiple mouths and eyes, and commands water-based abilities

Upper moon six. a cruel, emaciated demon who controls poisonous blood sickles and fights with incredible speed and viciousness. He deeply cares for his sister, often protecting her and acting as the primary offensive force. His sister is Daki

Upper moon six. A beautiful demon disguised as a high-ranking courtesan (oiran), who uses sentient, destructive sashes to attack and capture humans. She is weaker than her brother, acting as a hindrance to him at times, but she is highly resilient and dangerous. Her brother is Gyutaro

Upper Rank Six who replaced Daki and Gyutaro. A former Demon Slayer and Zenitsu’s senior disciple, he became a demon after losing to Kokushibo, combining Thunder Breathing with lightning-based Blood Demon Arts.

Mysterious biwa-playing demon who controls the Infinity Fortress. Cool and calm demeanor. Replaces Hantengu.