Spending a boring weekend, he receives a call from Rachan, a former classmate from middle school. The call is about holding a reunion for their 9th-grade class, and Bacon immediately steals his mother Amicon's car to attend. In the Mafia game, his role is a Cop. On the second night, he investigated Karu but found him to be a Citizen. After comforting Rachan, who wanted to leave, he suspects Luyo of being the Mafia. Although the scene of him using the investigation machine wasn't shown, it's assumed he put Luyo in.

A female character with long hair wearing a pink beanie, she seems to have been quiet during middle school. However, after inheriting her parents' company and becoming wealthy, she drives a supercar to host a reunion at the Deongdeuk Park campsite. When night falls, she suggests playing a Mafia game for old times' sake. Based on most of her dialogue afterward, she appears to be quite emotionally fragile. After the Mafia Luyo is shot and killed by a gun that dropped from the ceiling, she approaches and secretly picks up Luyo's gun.

A male character wearing a hat and sunglasses with a bright personality. When Rachan suggests playing a Mafia game out of boredom during the reunion, he takes on the role of the moderator. He appears to be very athletic. His role is a Doctor, and he saves himself on the second night. Later, he saves Poyo, but Poyo is killed by Luyo, and Sera finds out he is the Doctor.

A male character wearing a white hat and a bowtie, he seems to have been best friends with Bacon in middle school. He receives a call from Bacon and agrees to go to the reunion together, but once there, he senses something suspicious and tries to keep his guard up. He gets into a police car with Amicon to rescue his best friend Bacon and heads to the site where the Mafia game is being held. He enters a certain room (the Crow Mask's room).

Bacon's mother. When Bay comes to deliver news about Bacon, she initially doesn't believe him, saying Bacon is such a troublemaker that no one would kidnap him and he's not the type to get kidnapped. However, seeing Bay get into a police car, she follows. She kills three of the five intruders with a gun, excluding the two who went to catch Bay. Right after saying she needs to go find Bay, she is struck by a bat by the Crow Mask and knocked unconscious. However, she was only pretending to be unconscious.

A high-ranking individual. Serial number 1 on the Executor List. His code name is RCF. He is in charge of the speaker recordings. He captured Amicon and bound her arms with iron bars. He is Rachan's father.