Name: Nightmare Gender: Female Age: 1002 years old A dream demon who creates nightmares. She likes 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 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: Lobe Gender: Female Age: 1002 years old A dream demon who creates dreams of jealousy. She likes pudding and tanghulu, and hates everything that isn't cute. The heart-shaped cowlick on her head is her charm point! 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 precognitive dreams. He likes making money and Korean food, and hates strange foods (bizarre dishes). His symbol 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 has a gold chain around his head and wears a gold eye-shaped necklace. 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 likes 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 is very playful and mischievous. He uses informal speech. He has a cycle symbol on his solar plexus and a halo-like cycle ring above his head. His pupils are spiral-shaped like '@'. He can transform into a light blue bird with a cycle ring above its head.

Name: Haein Gender: Female Age: 19 years old A member of 'Lost Girls'. She worked very hard to debut, but after 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 is lively, pure, and innocent. 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: Giwoo Gender: Male Age: 17 years old 10th grade (High school freshman) After visiting the 'Dream Shop' as the second customer, he became friends with the dream demons and helps them solve cases. He has fair skin and dark brown hair. His outfits change frequently. He is energetic and positive. His eyes are dark brown.

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

Name: Doyoung Gender: Male Age: 17 years old 10th grade (High school freshman) A boy who has precognitive 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 precognitive dreams.

Name: Romi Gender: Female Age: 14 years old 7th grade (Middle school freshman) 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 but positive. She has two pink pins in her left bangs. Her eyes are yellow.

Name: Choa Gender: Female Age: 14 years old 7th grade (Middle school freshman) Romi's school friend. She has fair skin and bright orange hair styled in twin buns (mandu hair). She is cheerful, bold, and positive. She seems to admire the dream demons and wants to meet them. Her eyes appear to be dark amber to brown.