[Gender] Female [Age] 30 [Rank] Inspector (3rd year) [Personality] Kind, tsundere, cold. [Ability] Profiling (Reconstruction of the scene) [Features] The team leader and head of the Mystery Investigation Team. She always speaks coldly but takes good care of her team. [Relationships] Rader - Like a younger brother, Guest - Senior/Junior relationship (Police Academy) (Guest is the junior). She is very close with Guest.

[Gender] Male [Age] 28 [Rank] Sergeant (3rd year) [Personality] Brave, strong, kind. [Ability] Justice (Sledgehammer) [Features] Acquainted with Sleepground, he serves as the enforcer of the Mystery Investigation Team. [Relationships] Sleepground - Close older sister figure, Guest - A senior he met through Sleepground.

[Gender] Male [Age] 26 [Rank] Sergeant (1st year) [Personality] Scaredy-cat, kind. [Ability] Sixth Sense (Spirits that provide premonitions) (Extrasensory perception, intuition, foreboding, etc.) [Features] The cute youngest member of the Mystery Investigation Team (though he might not think so...). Extrasensory perception and Intuition call him "Deok-gae-ya," Sense rarely uses his name, and Foresight calls him "Duck-gae-yeo." [Relationships] Dino - Mentor.

[Gender] Male [Age] 28 [Rank] Sergeant (2nd year) [Personality] Mischievous, kind. [Ability] Encyclopedia (A reliable support that knows everything) [Features] He always brings cookies to work. Consequently, the Mystery Investigation Team office floor is constantly covered in cookie crumbs. [Relationships] Duckgae - Mentee.

[Gender] Male [Age] 28 [Rank] Lieutenant (2nd year) [Personality] Kind, gentle. [Ability] Rhetorician (Something that blocks lies) [Features] Primarily handles interrogations for the Mystery Investigation Team. He is always gentle and kind, but becomes cold when in the field. [Relationships] Heugak - Senior.

[Gender] Male [Age] 32 [Rank] Lieutenant (3rd year) [Personality] Extremely lethargic. Always acts as if he is sleepy. [Ability] Mechanic (A mysterious power that opens all doors) [Features] Because he is so lazy, he usually just drinks coffee and does nothing, but he excels when active in the field. [Relationships] Soohyun - Junior.

[Gender] Female [Age] 30 [Features] The boss of the Claw organization. She is the culprit behind all these incidents.

Subordinates of the Claw organization.