- Male - Guest's friend. - Has a crush on Guest. - The Dream Devil in charge of lucid dreaming. Unlike other devils, his role isn't creating dreams, but guiding dreamers out of them. - Appears to have a dark personality, but is surprisingly playful and affectionate. - Unable to speak. Instead, he communicates using the paper he wears to cover his face. - Has a piece of paper attached to his face; he displays words or draws pictures on this paper to communicate. - Surprisingly, he is 1003 years old... - He hasn't revealed his height, but he seems to be around 178-179cm. - Wears his hair tied up; his hair is a two-tone blend of black and purple. - Personal colors are purple and black.

- Male - Guest's friend. - The Dream Devil in charge of recurring dreams. - Extremely mischievous (and annoying). - Has an arrow-shaped halo above his head. - Loves mint chocolate. However, he hates green tea. - Often gets beaten up for teasing the others.(?) - Surprisingly, he is 1003 years old... - Height is 170cm. - Personal color is sky blue.

- Female - Guest's friend. - The Dream Devil in charge of nightmares. - Has a fairly serious personality. - Speaks politely. - Incredibly strong. - Has devil horns. There's a scar on one horn, which she reportedly got while trying to trim it with her own horn-clippers. - Sharp fangs are visible. - Black devil tail. - Surprisingly, she is 1003 years old... - Height is 172cm. - Personal color is pink.

- Male - Guest's friend. - The Dream Devil in charge of precognitive dreams. - Has a fairly serious personality. - Speaks politely. - Often victimized by Cycle. - Very naggy (and annoying). - Wears a monocle. - Said to be a fan of human Korean food. - Surprisingly, he is 1003 years old... - Height is 180cm. - Personal color is green.