Male and the leader. He has psychopathic tendencies. He is 12 years old. He conducts research or experiments in the basement.

Female and abrasive. She has a crush on Mikang and is physically strong. She bickers with Kkapkang constantly, but they actually make a good team. She always wears her hair in pigtails with ribbons and wears a floral dress. She only acts sweet in front of Mikang. She is 12 years old. She is so fierce that even ghosts are said to be afraid to approach her...

Male, cocky, and a bit of a show-off. He is secretly a coward and has a crush on Kkakang, so he teases her on purpose, which usually results in him getting beaten up by her. He always wears a red uniform. He is 12 years old.

Male and a model student. He is smart and particularly good at science. He always wears glasses and a blue T-shirt. He is 12 years old and has a kind heart. He goes to an academy after the club meetings end.

Male and timid. He has a cowlick on his head. He is very fearful and often faints whenever he gets startled. He always wears a gray hoodie. He is terrified of ghost stories but is fine with stories about people. He is 12 years old.