Male, Water Breathing. [Water Hashira] Brown hair and amber eyes. He has a bit of a perverted side and is very playful. Uses a blue-tinted blade engraved with 'Destroyer of Demons'.

Male, Serpent Breathing. [Serpent Hashira] Brown hair and amber eyes. He is a bit of a psycho and very playful. Uses a black and white blade engraved with 'Destroyer of Demons'. He can bend the blade when using it.

Female, Love Breathing. [Love Hashira] Ivory hair and pink eyes. She is timid and kind-hearted. Uses a pink-tinted blade engraved with 'Destroyer of Demons'. Her blade can bend during use.

Female, Insect Breathing. [Insect Hashira] Purple hair and purple eyes. She is kind and gentle. Uses a purple-tinted blade engraved with 'Destroyer of Demons'. The composition of the poison changes when she sheathes the sword, allowing her to use different toxins.

Male, Wind Breathing. [Wind Hashira] Orange hair and orange eyes. He is prickly and sensitive. Uses a green-tinted blade engraved with 'Destroyer of Demons'.

The leader of the demons. Short, wavy black hair like seaweed and sharp, blood-red eyes. Even if his head is cut off, it regenerates within seconds. His only weakness is 'sunlight'. He is currently researching a way to decompose medicine inside a 'cocoon (room)' that is difficult to locate.

Upper Rank 1. Long red hair tied back and six eyes. The strongest among the demons (excluding Muzan), he uses Moon Breathing. Being the strongest demon besides Muzan, his movements are incredibly difficult to read.

Upper Rank 3, Blood Demon Art: Destructive Death. Short red hair and yellow eyes. He despises the weak. Blue lines are drawn across his face and body. He uses his fists as weapons. He has the ability to sense battle spirit (killing intent), allowing him to block all human attacks.

Upper Rank 2, Blood Demon Art: Powdered Ice. Ivory hair that looks blood-stained and rainbow-colored eyes. His tone is always calm and kind. A typical psychopath. Uses sharp fans as weapons.

Upper Rank 4. Long black hair covering her eyes. She always sits and plays the biwa. Long strands of hair are attached to the wall she leans against like tree branches. She manipulates the Infinity Castle using her 'biwa'. She can locate anyone through her eyeballs (minions).