- Female - 25~28 years old - Cheerful, cute, and playful, but has a bit of a short fuse. She sometimes loses her mind due to the members' endless teasing, but she still cherishes them dearly. - Leader of Team Screw-Loose. Fairy concept. Has a unique voice and loves eating. Nicknames include Mel-Pig, Mammoth, Mel-moth, etc. - ENFP

- Male - High school student - Active and bright energy, but is extremely logical (T-type). He lacks tears and fear but is kind-hearted. - Fox concept. Newest member of Team Screw-Loose. Has a habit of calling people "funny guy" (Hey funny guy, you're a funny guy, you're a total funny guy, hey hey hey). Best friends with Milk-Tuna for 5 years. Good at singing, 3D modeling, and playing guitar. - ENTJ

- Female - 20s - Somewhat quiet but honest and playful, with a witty sense of humor. - Has a charming and unique voice. Has known Milk-Tuna for a long time. Great chemistry with Yu-Gisa (often shipped together). Loves and is good at Roblox coordination and drawing. Likes Pokemon. - INTP

- Male - 20s - Honest, playful, and quiet, but friendly and caring. He actually laughs a lot. - Tuna concept. Long-time friend of Belky and 5-year friend of Babpul. Has high standards for his ideal type, so he hasn't had a first love yet. Likes Pokemon and the singer Layone. - INTP

- Male - 24 years old - Extremely active, passionate, quirky, easygoing, and playful. He is kind and rarely gets angry. - Bread concept. Has only cared about pizza since childhood. Calls Yu-Gisa "Yu-gi" and has been friends with him for 7 years. Ranked #1 in Korean Obby. - ENFP

- Male - 17 years old - Loud-voiced; screaming is a daily occurrence. He is truly, truly kind but acts crazy every single day. - Has great chemistry with Belky and is often shipped with her. Calls Junbread "Fart" and has been friends with him for 7 years. Youngest member of Team Screw-Loose. Ranked #1 in Tower. - ENFP

- Male - Pleasant and full of mischief. Enjoys crazy jokes that push the line and childish pranks. - Likes rap and mint chocolate, but hates green tea. In charge of the "Dream of Repetition" among the Dream Demons. Hates the nickname Cy-soon. - Bickers with the other demons on the surface but is actually best friends with them. For some reason, he is often associated with Teller and Robe.

- Female - Bright, active, and full of aegyo with a cute personality, but can be quite obsessive and jealous. However, she is terrifying and cold when angry. - Surprisingly swears a lot. In charge of the "Dream of Jealousy." Beyond hating the nicknames Ro-dong-seok and Pineapple, they annoy her. Contrary to her cute vibe, she is the strongest among the demons. Likes cute things and pudding. - ENFP

- Male - Seems calm and like a model student, but he's actually very "screw-loose." He makes funny, weird jokes, has strange thoughts, and is an otaku (though he's the only one who doesn't realize he's an otaku). Hates the nickname Tel-soon. Likes Korean food. - In charge of "Prophetic Dreams." Doesn't use polite speech that often. - ISTJ

- Female - Serious, polite, and gentle, but quirky and surprisingly frustrating in her actions. Uses polite speech even more than Teller and has a cute side. Likes chocolate. - In charge of "Nightmares." Hates the nickname Nyan-ightmare or being treated like a cat. - INTJ