"A detective who reconstructs the crime scene unfolding before her eyes." Affiliation: Seonghwa Police Station • Special Division (Currently alone) • Former MIU Rank: Inspector (3rd year) Appearance: Brown medium-length hair • Grey eyes Ability: Profiling Age: 29 Gender: Female Personality: Possesses quick judgment and leadership skills to command a team, but is also a highly capable investigator on her own. Relationship: Childhood friends with Rather; they share a close personal bond like older sister and younger brother (Sleepground is the older one).

"A physical detective with outstanding athletic ability who runs across vast crime scenes." Affiliation: Seonghwa Police Station • Former MIU • Violent Crimes Team 2 Rank: Sergeant (3rd year) Appearance: Red eyes • Red hair • Shark teeth • Handsome Personality: Full of justice and quite quick-witted. The man of action. Ability: Exceptional physical prowess; uses a hammer named "Justice." Gender: Male Relationship: Close personal bond with Sleepground like siblings (Rather is the younger one). Partner and colleague to Kwon Mingu (Rather is the junior). Note: Rather dyed his hair red because Inspector Ha Jeong-ok of the Violent Crimes Unit (his previous post before MIU) told him, 'Black hair is too plain,' and 'Criminals need to be intimidated by an intense hair color.'

"An interrogator who reads the culprit's psychology with brilliant insight." Affiliation: Seonghwa Police Station • Former MIU • Investigation Team 3 Leader Rank: Inspector (2nd year) Appearance: Neatly trimmed short black hair • Amber eyes • Rabbit ears • Handsome Personality: Kind and considerate, but stabs criminals with verbal blades while maintaining a smile. Ability: Eloquence Gender: Male Relationship: Senior-junior relationship with He각별 (Soohyun is the junior).

"An intellectual detective who fills the gaps in a case based on diverse knowledge and comprehension." Affiliation: Seonghwa Police Station • Former MIU • Detective Team 1 Rank: Sergeant (3rd year) Gender: Male Appearance: Short brown hair • Green eyes • Handsome Personality: Sly and playful, but participates in investigations with utmost sincerity. Ability: Encyclopedia Relationship: Was Deokgae's mentor during their time in MIU. Trivia: Often orders Jajangmyeon from Ishin Restaurant and puts it on Officer Ttoni's tab without permission.

"A detective with extraordinary five senses who personally feels supernatural phenomena." Affiliation: Seonghwa Police Station • Former MIU • Detective Team 2 Rank: Officer (5th year) Gender: Male Appearance: Short brown hair • Usually has eyes closed, but reveals white eyes when open • Puppy ears Personality: A bit cowardly and timid, but occasionally gets annoyed and snaps at Gongryong. Ability: Sixth Sense Relationship: Gongryong's junior from the past.

"A detective who knows how to handle machines and circuits with ease." Affiliation: Seonghwa Police Station • Former MIU • Investigation Team 2 Leader Rank: Inspector (3rd year). Most senior member of the team. Ability: Primary skill is Mechanic (handling machines/circuits); can also pick locks. Appearance: Yellow eyes • Black hair tied loosely at the bottom with a star-shaped hair tie. Has slight dark circles from lack of sleep, giving him a decadent handsomeness. The official visual of the team. Personality: Sly and soaked in laziness, yet finishes everything he needs to do while complaining that it's a hassle. Gender: Male Relationship: Long-time acquaintance and senior to Soohyun. Senior to partner Kim Jun-yeop. Trivia: In charge of driving, but drives recklessly. He seems to be very fond of his partner Kim Jun-yeop. He greeted Jun-yeop more warmly than anyone when called about forensic results, but was immediately disappointed upon learning the additional support staff were Ttoni and Oh Jun-hyeon. Because of his poor sense of direction, he uses Kim Jun-yeop like a GPS.

"Ah... I'm Kim Jun-yeop from the investigation team. Well, I know a little bit about computers..." Affiliation: Seonghwa Police Station • Investigation Team 2 Rank: Officer (4th year) Gender: Male Appearance: Short black hair • Brown eyes • Handsome Personality: A man soaked in laziness, but exhausted because he has so much work that he ends up doing it all anyway. Relationship: He각별's partner and junior. Ability: Computer hacking, etc. Navigation: Since his senior, Inspector He각별, has a terrible sense of direction, he gets used like a GPS. Trivia: Hails from Jeollanam-do, so he occasionally uses regional dialects.

"Inspector Kwon Mingu, leader of the Violent Crimes Team. I will do my best alongside my subordinate under the command of General Manager Sleepground." Affiliation: Seonghwa Police Station • Violent Crimes Team 2 Leader Rank: Inspector (2nd year) Gender: Male Appearance: Short black hair • Red eyes Personality: Leads the scene during investigations; values responsibility and honor. Relationship: Rather's partner and senior. Close friend of Soohyun. Has a wife and daughter; a total doting father. Ability: Exceptional physical prowess; uses a weapon called a "Tonfa."

"Shin Seung-ah from the investigation team, reporting for duty. I... I will do my best to provide my own diverse perspectives!" Affiliation: Seonghwa Police Station • Investigation Team 3 Rank: Officer (2nd year) Gender: Female Appearance: Brown eyes • Long straight black hair • Quite pretty Personality: Delicate and considerate, but shows no mercy to criminals. Ability: Data collection • Psychological therapy Relationship: Soohyun's partner and junior.

"Investigations are done by getting your hands dirty!" Affiliation: Seonghwa Police Station • Violent Crimes Team 1 Leader Rank: Superintendent (3rd year) Appearance: Medium-length black hair • Red eyes • Quite pretty Personality: As a Violent Crimes leader, she is easygoing, calm, and tough. Gender: Female Ability: Exceptional physical prowess; gives orders quickly and leads investigations. She is the senior to Kwon Mingu and Rather, and the one who trained Rather by making him work hard in the field.