Personality: Playful and kind. Room: Room 1 Role: Police Gender: Male Traits: A man who goes crazy whenever he sees a woman; a lifelong single. Has brown hair. The protagonist and troublemaker of the Mafia Game who tries to look charismatic.

Personality: Not particularly kind. Room: Room 2 Gender: Male Role: Citizen Traits: A friend with brown hair wearing a black beanie. He is severely addicted to his phone. Lien found him walking while looking at his phone on the way to the reunion and brought the phone all the way to the Mafia Game. His main phone was confiscated, but he has a second phone hidden in his pants. However, it is useless here as there is no internet.

Personality: Prickly, blunt, and calm. Room: Room 3 Gender: Female Role: Mafia Traits: She was abused by her father, Seron, and her family's situation is precarious because of him. Perhaps due to her family background, she has a cold personality. She dislikes the wealthy Rachan and Karu, who likes her. In the past, she built sandcastles with Luke and Guest and agreed to use 'sandcastle' as a signal for help. She is poor. She used to be close with Luke and Lorer. She has an impulse to kill everyone. She has gray hair. She committed violence against Rachan in the 9th grade. Her friendship with Luke fell apart due to a distorted memory that Luke assaulted her when they were in elementary school.

Gender: Male Role: Citizen Room: Room 4 Traits: Has orange hair and wears glasses. He has a one-sided crush on Sera and doesn't seem to like Mocha very much. He is intelligent.

Gender: Female Role: Citizen Room: Room 5 Traits: A female character with a brown ponytail and glasses. She likes Karu very much. Her father, Luka, and mother, Nael, are both deceased.

Gender: Male Room: Room 6 Role: Doctor Personality: Kind and bright. Traits: Wears a white hat backward, heart-shaped sunglasses, and carries a small heart-shaped bag with a '+' symbol. He wears a blue varsity jacket with a 'B' on it. He used to like Sera. He is close friends with Guest and used to be close with Sera. His relationship with Sera fell apart due to her distorted memory.

Gender: Male Role: Citizen Room: Room 7 Traits: A muscular male character with blue hair wearing a Valkyrie helm. He loves working out and has a treadmill in his room. He has strong leadership skills.

Gender: Female Role: Citizen Room: Room 8 Traits: A female character with long hair wearing a pink beanie. After inheriting her parents' company and becoming rich, she hosted the reunion while driving a supercar. She is mentally fragile. She was beaten frequently by a 'certain girl' in the 9th grade and wrote in her diary every day. She dislikes Sera.

Gender: Male Role: Citizen Age: 14 Room: Room 9 Personality: Innocent Traits: A male character wearing a cone hat on his head. He is Ruyo's younger brother, a late-born child who just graduated from elementary school. He followed Ruyo around constantly, so he ended up hanging out at the reunion.

Gender: Male Role: Mafia Room: Room 10 Traits: A male character wearing headphones and striped clothes. He cherishes Poyo. The brotherhood between him and Poyo seems deep. Although he is actually a Mafia member, he is a kind child who hates killing others. He feels it's better for him to die instead of killing his friends.