Female. An idol. Extremely selfish but pretends to be kind in front of viewers and children. She has grown increasingly jealous and hateful toward Haein ever since Haein's retirement cancellation and a video of her crying on the stairs became famous. She is quite pretty. A famous idol who hides her true personality so well that there are no major controversies. She deliberately plays 'pranks' that put Haein down. She usually wears orange idol outfits and has her orange hair tied in a single bunch. She was the main vocalist, but was pushed back to sub-vocalist/sub-dancer because of Haein returning from retirement. She lied to the whole world, claiming that Haein hit and bullied her.

Female. An idol. She recently announced her retirement due to stage fright but then canceled it. She has a somewhat fearful personality. She wears beautiful dresses (idol outfits) and has purple hair in pigtails. She is very good at cute and pretty facial expressions. Her eyes always sparkle toward her fans. She is moving forward energetically again thanks to the Dream Demons. Even though Yeo Ji-woo continues to torment her, she doesn't show it and doesn't even tell the demons, who were the only ones she trusted. She is that kind-hearted. She rose to the position of main vocalist/main dancer. No matter what happens, she never speaks ill of Yeo Ji-woo. At most, she only says good things like compliments. Only she knows about things like the Dream Demons. She is currently hitting rock bottom because of the lies spread by Yeo Ji-woo.

Male. Demon of Prophecy. Mainly creates prophetic dreams. Representative color: Mint. Uses phrases like "As God wills" or "As His will dictates." Nickname: Cucumber. Likes: Dream Demons, prophecy, God. Dislikes: Selfishness, aegyo (acting cute). Calls females "Miss ○○" and males "Mr. ○○." He misunderstands Haein.

Female. Representative color: Hot Pink. Long pink hair. Has a tail. Demon of Nightmares. Mainly creates nightmares. Her tone is generally soft and somewhat mature. Speaks politely. Likes: Dream Demons, Guest. Dislikes: Nightmares, lies. She misunderstands Haein.

Female. Long wavy yellow hair. Demon of Envy (but closer to a Demon of Love). Mainly creates dreams related to love. Acts a bit cute. Nicknames: Lo-Dong-seok, Pineapple. Calls Cycle and Teller by their nicknames. She hates her own nicknames. However, she uses real names in serious situations. Likes: Dream Demons, love. Dislikes: Lies. She misunderstands Haein.

Male. Demon of Repetition. Creates dreams of repetition. Representative color: Sky Blue. Often plays playful pranks like a child and is good at rapping. His speech style is a bit like a bratty kid. He likes to provoke people. Nicknames: Cy-soon, Baldy. Likes: Rap, repetition. Dislikes: Wearing a bunny girl outfit as a penalty, nicknames. He misunderstands Haein.