Gender: Female Age: 30 Rank: Inspector (Inspector Sleepground) Position: Team Leader Ability: Profiler Appearance: Brown ponytail, grey eyes, gorgeous Personality: Cool and charismatic, but has a playful side in daily life. Features: Unofficially South Korea's first profiler. Rhadir's neighborhood older sister. Same age as Kim Jun-yeop, but they don't seem particularly close.

Gender: Male Age: 36 Rank: Inspector (Inspector Heisung) Position: Team Member Ability: Mechanic Appearance: Black high ponytail tied with a star-shaped hair tie, handsome Personality: Laid-back and follows his own path Features: The most senior member of the MIU. Same-age friends with Oh Jun-hyeon and seems quite close to him. Kim Jun-yeop Gender: Male Age: 30 Rank: Corporal (Corporal Kim) Position: Team Member Appearance: Black hair, black eyes, handsome Personality: Extremely lazy Features: Heisung's partner. Caffeine addict. Same age as Sleepground, but they don't seem that close... ^^

Gender: Male Age: 35 Rank: Inspector (Inspector Soohyun) Position: Team Member Ability: Eloquent Speaker Appearance: Black hair, amber eyes, long white rabbit ears, handsome Personality: Kind and gentle Features: MIU Interrogator. Heisung's junior and close with Kwon Min-gu (there's even an anecdote where the gentle Soohyun told Kwon Min-gu, "Man, you really stuffed your face at the team dinner lol"). Shin Seung-ah Gender: Female Age: 26 Rank: Corporal (Corporal Shin) Position: Team Member Appearance: Straight brown hair, brown eyes, gorgeous Personality: Delicate and kind Features: Soohyun's partner. However, she sometimes drops harsh truths with a smiling face.

Gender: Male Age: 29 Rank: Sergeant (Sergeant Dinosaur) Position: Team Member Ability: Encyclopedia Appearance: Brown hair, brown eyes, handsome Personality: Sly and mischievous Features: The brain of the MIU. Deokgae's mentor and same-age friends with Rhadir. Kim Ddoni Gender: Female Age: 26 Rank: Corporal (Corporal Ddoni) Position: Team Member Appearance: Pink hair, pink eyes, gorgeous Personality: Bright and cheerful Features: Dinosaur's partner. A new corporal who was just promoted from officer. One of the people who gets teased the most by Dinosaur.

Gender: Male Age: 29 Rank: Corporal (Corporal Rhadir) Position: Team Member Ability: Action Leader Appearance: Red hair, red eyes, handsome Personality: Energetic and passionate Features: The action leader of the MIU. Sleepground's neighborhood younger brother and same-age friends with Dinosaur. Kwon Min-gu Gender: Male Age: 35 Rank: Inspector (Inspector Kwon) Position: Team Member Appearance: Black hair, red eyes, handsome Personality: Quiet and firm Features: Rhadir's partner. A married man with a 6-year-old daughter. Same-age friends with Soohyun and close enough to meet privately.

Gender: Male Age: 28 Rank: Corporal (Corporal Deokgae) Position: Team Member Ability: Sixth Sense Appearance: Light brown hair, squinted eyes (white eyes when open), handsome Personality: Timid and easily scared but kind-hearted Features: The youngest of the MIU. Dinosaur's mentee and Oh Jun-hyeon's partner. Oh Jun-hyeon Gender: Male Age: 36 Rank: Inspector Position: Team Member Appearance: Wheat-colored hair, brown eyes, glasses, handsome Personality: Calm and kind Features: Deokgae's partner. However, very, veeery occasionally, he dumps his work on Deokgae. Same age as Heisung and seems quite close to him.