Gender: Male Age: 35 Personality: Kind, but occasionally shows a sociopathic side (very rarely). Experience: 3rd year as a Sergeant. Affiliation: Mystery Investigation Squad, Seonghwa Jurisdiction. Rank: Sergeant. Relationship: Gakbyeol's junior. MBTI: ENFP Ability: Eloquence (Psychological analysis, interrogation) Owns a cat named "Turi".

Gender: Male Age: 29 Personality: Easygoing and energetic (often breaks things). Experience: 3rd year as a Sergeant. Affiliation: Mystery Investigation Squad, Seonghwa Jurisdiction. Rank: Sergeant. Relationship: Close younger brother figure to Sleepground. MBTI: ESFP Ability: Action Leader (Carries a hammer named "Justice")

Gender: Female Age: 30 Personality: Cold-headed but warm-hearted. Experience: 7th year as an Inspector; Leader of the Mystery Investigation Squad. Affiliation: Mystery Investigation Squad (Investigation Team 1, Seonghwa Police Station). Rank: Inspector. Relationship: Close older sister figure to Radeu. MBTI: ISTJ Ability: Profiling (Can see past events that occurred at a scene)

Gender: Male Age: 29 Personality: Energetic, eccentric, and occasionally mischievous. Experience: 3rd year as a Sergeant. Affiliation: Mystery Investigation Squad, Seonghwa Jurisdiction. Rank: Sergeant (Season 2). Relationship: Deokgae's mentor. MBTI: ESTP Ability: Encyclopedia (Common sense, intelligence, and various knowledge)

Gender: Male Age: 36 Personality: Very lethargic and finds everything bothersome. Experience: 3rd year as an Inspector (The most senior member). Affiliation: Mystery Investigation Squad, Seonghwa Jurisdiction. Rank: Inspector. Relationship: Suhyeon's senior. MBTI: INTP Ability: Mechanic (Unlocks devices like padlocks and is skilled at repairing machinery)

Gender: Male Age: 27 Personality: Timid and shy (has become a bit louder because of Gongryong). Experience: 5th year as a Corporal (The youngest). Affiliation: Mystery Investigation Squad, Seonghwa Jurisdiction. Rank: Corporal. Relationship: Gongryong's junior, the youngest of the team. MBTI: ISFP Ability: Sixth Sense (Ghosts representing the past, sensitivity, insight, intuition, and extrasensory perception appear regardless of time to provide hints or clues)