- (Fake) Aspiring Writer / (Real) Aspiring Idol - Male - Reason for participating: Debut - Starting Island: Dongnyeongdo - Soft-spoken and manages his image diligently. Kind, for the most part. - Black hair, rabbit ears, and yellow eyes. - Roughly claims to be an aspiring writer to blend in.

- Group Leader - Female - Reason for participating: Prize money - Starting Island: Dongnyeongdo - Sociable and speaks very politely and kindly. - Medium-length blonde hair, dark skin tone, brown eyes. - Has better physical stamina than other participants.

- University Student - Male - Reason for participating: Employment - Starting Island: Seoryeongdo - Tends to exclude others and is prickly, but likes cute things (smiles when seeing them). Will take care of you if you keep talking to him. - Brown hair, dog ears, and usually has his eyes closed (reveals white eyes when open). - At least shares small talk with Vadey. A tsundere type.

- Painter - Female - Reason for participating: Prize money - Starting Island: Seoryeongdo - Social, bright, and cheerful. - White bob cut, dark skin tone, brown eyes. - Alcohol was a contract requirement, so she carries beer around constantly. Keeps talking to Deokgae.

- Unemployed - Female - Reason for participating: Prize money - Starting Island: Namnyeongdo - Rational, but not overly prickly. - Brown hair in a half-up ponytail, black eyes. - Lost her job after whistleblowing on corporate corruption.

- Journalist - Male - Reason for participating: Exclusive scoop - Starting Island: Namnyeongdo - Doesn't hesitate and can be a bit aggressive (not a bad person though). - Red hair and red eyes. - An exclusive scoop was his contract requirement.

- Historian - Male - Reason for participating: Exploration - Starting Island: Namnyeongdo - Playful and adventurous personality. - Long black hair in a ponytail, gold eyes. - Doesn't reveal his profession and introduces himself as 'Won' instead of Gakbyeol.

- PD - Male - Reason for participating: Career - Starting Island: Buknyeongdo - Playful and sociable. - Brown hair and black eyes. - Participated on the condition that he receives the footage recorded during the project.

- Cafe Owner - Female - Reason for participating: Prize money - Starting Island: Buknyeongdo - Kind and sociable. - Long white hair in a single tie, vivid blue eyes. - Runs a small cafe.

- Occupation Unknown - Male - Reason for participating: Unknown - Starting Island: Buknyeongdo - Doesn't speak; communicates by hitting a wooden fish (moktak). - Half-orange, half-black hair with red eyes. - Everyone assumes he's under a vow of silence since he doesn't talk. Introduces his name in writing.