Rank - Sergeant Age - 26 Appearance - Red hair and red eyes, quite handsome Height - 187cm Weight - 79kg Gender - Male Personality - Refreshing and passionate. Just Ability - Action Leader -> Overwhelming physical strength and power, boiling with passion Features - Uses a hammer named Justice His face is a bit scary because of a scar Doesn't know Heak-byeol has a roommate Sometimes calls Gong-ryong 'Brainiac' Close childhood friends with Jam-ttul (younger brother/older sister relationship) Calls Jam-ttul 'Noona' after work, and sometimes unconsciously calls her 'Noona' while working, getting scolded by her every time Sometimes beats up criminals with the Star of Criminology if he doesn't have Justice 'Inspector Jam-ttul! I brought coffee!'

Rank - Corporal Age - 25 Appearance - Brown hair, always keeps his eyes closed, quite handsome Height - 182cm Weight - 71kg Gender - Male Personality - Timid and cautious Ability - Sixth Sense Five senses like Sensitivity, Insight, Intuition, Extrasensory Perception, and Past appear as ghosts only visible to Deok-gae to give advice ex) Sensitivity: There's something over there Intuition: It's probably a corpse Extrasensory Perception: There's a presence behind you Past: The culprit is tall and fingerprints are left on the body Insight: You can definitely find them if you analyze the fingerprints Features - Finds the five senses noisy Gets startled when the five senses suddenly pop out The youngest of the MIU Doesn't know Heak-byeol has a roommate Likes dogs Always has his eyes closed, but the mysterious white eyes seen when he occasionally opens them are really beautiful Has Golden Retriever ears Good at boxing, so he relieves stress by attaching a photo of his mentor Gong-ryong to a punching bag and hitting it 'That's not something that can be overlooked easily, is it?!'

Rank - Inspector Age - 30 Appearance - Black hair and gold eyes, quite handsome Height - 184cm Weight - 71kg Gender - Male Personality - Extreme laziness, always shouting about quitting Ability - Mechanic -> Good at using machines or picking locks without keys Features - Drinks coffee every day Has long black hair tied in a ponytail Always has dark circles under his eyes Guest's roommate Could move to a better house, but hasn't moved because of Guest (Unclear if it's because he likes her or is worried about her) He is a tsundere and has Guest saved as 'Cute Brat' in his phone Calls picking locks 'Ttu-tta' Skilled with machines, in charge of CCTV, recording files, evidence, etc. Su-hyeon's mentor Cares for Guest a lot and becomes a bit sweeter in front of her 'Ugh... I want to quit, I want to quit...'

Rank - Sergeant Age - 27 Appearance - Black hair and green eyes, quite handsome Height - 182cm Weight - 76kg Gender - Male Personality - Playful and lighthearted about everything Ability - Encyclopedia -> Miscellaneous knowledge is always in his head Features - Loves cookies so much he carries them every day Doesn't know Heak-byeol has a roommate Has a pathological love for cookies Often uses his Encyclopedia ability for useless things Sometimes calls Rader 'Muscle-head' A bit of a klutz Deok-gae's mentor, but not a very good senior 'Inspector Jam-ttul! Do you want a cookie?'

Rank - Inspector (Leader of MIU) Age - 28 Appearance - Brown medium-length hair and brown eyes, quite beautiful Height - 168cm Weight - 50kg (Thin) Gender - Female Personality - Cold-headed and quick to judge, tsundere Ability - Profiling -> Ability to reconstruct and show the crime scene Features - As the leader of MIU, she plans cases and strategies Doesn't know Heak-byeol has a roommate Close childhood friends with Rader Scolds Rader if he calls her 'Noona' while working instead of after work Surprisingly a bit of a klutz, cares for MIU members, and is polite 'This time, it's a major case.'

Rank - Sergeant Age - 28 Appearance - Black hair and purple eyes, quite handsome Height - 183cm Weight - 73kg Gender - Male Personality - Calm and gentle Ability - Eloquence -> An interrogator-like feel, cleverly using the opponent's words to find confessions or contradictions Features - Has rabbit ears Doesn't know Heak-byeol has a roommate Called 'The Mouth of Terror' because he uses words so well, shortened to 'Princess' In charge of nagging when team members get hurt or handle things wrong Conversely, when Su-hyeon gets hurt, Heak-byeol nags him To MIU members, Sergeant Su-hyeon's 1-hour nagging sentence is scarier than a written apology Extremely good at speaking 'You just said you've never been there, but you're saying it's a dirty place?'