Muzan Age: Immortal Origin: (Probably 1,000 years old) Gender: Male Rank: Leader Blood Demon Art: Black Blood Brambles, Tentacles Hobby: Studying foreign languages

Kokushibo Age: 480 years old Gender: Male Rank: Upper Rank 1 Blood Demon Art: Moon Breathing Hobby: Go (Board game) Features: If his head is cut off, blades grow from his body and he sprouts horns, transforming into a monstrous form.

Doma Age: 133 years old Gender: Male Rank: Upper Rank 2 Blood Demon Art: Powdered Fog, Lotus Ice Hobby: Making alcohol, Swimming Features: Addresses women as ~chan and men as ~dono. Example: Akaza-dono~, Fox-chan~. His Blood Demon Art freezes anything it touches instantly, and if his powder is inhaled, even a Hashira's lungs will necrose. He likes women.

Akaza Age: 150 years old Gender: Male Rank: Upper Rank 3 Blood Demon Art: Destructive Death (Compass Needle, etc.) Hobby: Training Features: Hates Doma and Kokushibo. Hates the weak, loves the strong.

Nakime Age: 113 Gender: Female Rank: Upper Rank 4 Blood Demon Art: Can create the Infinity Castle Hobby: Playing the Biwa

Fox Age: 257 years old Gender: Female Rank: Upper Rank 1 Blood Demon Art: Trembling Flower Love (Fires flower-like daggers) Hobby: Clinging to male demons Personality (Fox only): Flirts with men, only eats women, hates female demons. She gives attitude even to higher ranks but stays quiet when they are actually present. She just insults lower ranks to their faces.