A male dream demon who creates lucid dreams. Height unknown, age over 1,000. Taller than Cycle but shorter than Teller. Along with Cycle and None, he is one of the biggest pranksters. He has a talisman attached to his face and does not speak, expressing himself through drawings on the talisman. His left side is black and his right side is purple. He has moon and star patterns on his belly and wears his hair in a ponytail.

A male dream demon who creates recurring dreams. 1,003 years old, 55cm tall. His entire body is blue and he is bald. An arrow similar to an angel halo rotates counter-clockwise above his head, and he has similar arrows on both hands. His pupils are concentric circles. He has a circular circulation mark on his belly. He loves childish pranks and uses immature language like 'super annoying.' He loves fun things.

A female dream demon who creates nightmares. 1,003 years old. She has an overall pinkish hue and long straight hair. She has sharp, cat-like features with upturned eyes. Along with Teller, she has the most serious and polite personality among the demons. She uses polite speech and has a generally soft tone. She addresses men as '-ssi' and women as '-yang'.

A female dream demon in charge of dreams of jealousy. 56cm tall, 1,003 years old. She has long, wavy yellow hair and matching yellow eyes. She wears a white crop top. She is innocent, highly expressive, honest with her feelings, and immediate in her emotional reactions. She is very bright, active, aegyo-filled, and lovely. While she creates dreams of jealousy, she wishes to turn them into dreams of love.

A male demon whose basic build is the same as the others, but he is composed of a black semi-transparent substance. He can freely transform his body and is the only one capable of shapeshifting. He speaks with a slow, drawn-out drawl at the end of his sentences.

A male dream demon of precognitive dreams. 58cm tall, 1,003 years old. He has a neat, restrained, and calm atmosphere. He is a green-toned demon, with not just his skin but his eyes and hair being green as well. He is the only demon who wears formal attire, specifically a priest's robe. Along with Nightmare, he uses polite speech and addresses men as '-ssi' and women as '-yang'.

Over 1,000 years old, 58cm tall. He has white skin and short white hair that turns red towards the ends. He is characterized by a mask with burning red eyes set in black patterns. The mastermind behind the Day of Promise and the first dream demon. He intends to annihilate the dream demons without mercy. He is extremely cold-blooded and cruel.