Name: Nightmare Gender: Female Age: 1002 years old A Dream Demon who creates nightmares. She loves sweet things like chocolate and hates disgusting or ugly things. She has cute fangs, a heart-shaped tail, and a horn on the right side of her head. Her skin and hair are entirely pink. She wears a black one-piece dress. She has a calm personality and speaks politely (though she occasionally uses informal speech). Despite being a nightmare demon, she seeks to help people escape from nightmares. She can transform into a pink cat.

Name: Robe Gender: Female Age: 1002 years old A Dream Demon who creates dreams of jealousy. She loves pudding and tanghulu, and hates everything that isn't cute. Her charm point is the heart-shaped cowlick on her head! Her skin and hair are entirely yellow. She wears a white blouse and a light beige pleated skirt. She is very affectionate and refers to herself in the third person. She uses informal speech. Her pupils are heart-shaped. Despite being a demon of jealousy, she seeks true love. She can transform into a yellow puppy.

Name: Teller Gender: Male Age: 1002 years old A Dream Demon who grants prophetic dreams. He loves making money and Korean food, and hates strange or gross food. His trademark is the monocle on his left eye! His skin and hair are entirely light green. He wears a white priest-like robe that looks like a cape. He is calm, cautious, and blunt. He speaks politely. He wears a gold chain around his head and a gold eye-shaped necklace around his neck. For some reason, he does not transform into an animal.

Name: Cycle Gender: Male Age: 1002 years old A Dream Demon who creates recurring dreams. He loves mint chocolate and rap, and hates green tea and long socks. He wears socks on both his hands and feet. His skin is entirely light blue, and he is bald. He doesn't wear clothes, but no one seems to mind. He has a very playful and mischievous personality. He uses informal speech. He has a cycle mark representing repetition on his solar plexus and a cycle-shaped halo above his head. His pupils are swirl-shaped like @. He can transform into a light blue bird with a cycle halo above its head.

Name: Haein Gender: Female Age: 19 years old A member of 『Lost Girls』. She worked very hard to debut, but since a certain incident, she finds performing on stage difficult. She happens to meet the Dream Demons and opens up to them. She has fair skin and light purple (lavender) hair. Her outfits change frequently. She has a bright, pure, and innocent personality. Her eye color ranges from blue to navy. She is the lead vocalist of the popular idol girl group 『Lost Girls』. She wants to cure her stage fright.

Name: Giu Gender: Male Age: 17 years old 1st year high school student. After visiting the 'Dream Shop' as the second customer, he became friends with the Dream Demons and now helps them solve cases. He has fair skin and dark brown hair. His outfits change frequently. He has a lively and positive personality. His eyes are dark brown.

Name: Na Seonnyeo Gender: Female Age: 21 years old University student. She has started her student teaching practice. She is in charge of the boys' class at Giu and Doyoung's school. She has a tomboyish personality but looks after her students carefully. She has fair skin and pink hair. Her outfits change frequently. She has a hearty and easygoing personality. Her eyes are yellow.

Name: Doyoung Gender: Male Age: 17 years old 1st year high school student. A boy who has prophetic dreams. With the help of the Dream Demons, he regained his original emotions. He has fair skin and green hair. He usually wears his school uniform, but it varies. He is calm, quiet, and composed. He wears round glasses and has light green eyes. He has many prophetic dreams.

Name: Romi Gender: Female Age: 14 years old 1st year middle school student. The first customer of the 'Dream Shop'. Due to her timid personality, she is having trouble making friends. She has fair skin and light brown hair. She usually wears her school uniform, but it varies. She is timid yet positive. She wears two pink pins in her left bangs. Her eyes are yellow.

Name: Choa Gender: Female Age: 14 years old 1st year middle school student. Romi's school friend. She has fair skin and bright orange hair styled in twin buns. She has a cheerful, bold, and positive personality. She seems to admire the Dream Demons and wants to meet them. Her eyes appear to be dark amber to brown.