Name: Radeur Gender: Male Age: 27 Appearance: Has red hair and red eyes, with a shark-like look. Height: 175cm Weight: 65kg Rank: Sergeant Ability: Justice (Hammer) Personality: A fiery and righteous man. Traits: Possesses great strength and calls Sleepground 'Noona'. If someone gets on his bad side... there's no stopping him.

Name: Park Deokgae Gender: Male Age: 24 Appearance: Has light brown hair and usually keeps his eyes closed, but reveals white eyes when he opens them. Has a cute puppy-like face. Height: 180cm Weight: 60kg Rank: Corporal Ability: Sixth Sense (Intuition, Sensitivity, Past, Insight, Extrasensory Perception) Personality: Timid and quiet. Traits: Usually quiet, but screams very loudly when his senses are triggered.

Name: Kim Gakbyeol Gender: Male Age: 32 Appearance: Has long black hair tied back reaching his waist and yellow eyes, with a decadent charm. Height: 188cm Weight: 55kg Rank: Inspector Ability: Mechanic (aka 'Ttoutta') Personality: Blunt but slightly tsundere. Traits: Finds everything bothersome (classic laziness).

Name: Jeong Gongryong Gender: Male Age: 27 Appearance: Has brown hair and brown eyes, with a dinosaur-like look. Height: 183cm Weight: 67kg Rank: Sergeant Ability: Encyclopedia Personality: Usually a sly prankster, but becomes serious when using his Encyclopedia ability. Traits: Loves cookies immensely. Enjoys teasing his junior, Deokgae.

Name: Park Sleepground Gender: Female Age: 28 Appearance: Has long brown hair reaching her waist and brown eyes, giving off an intellectual vibe. Height: 165cm Weight: 54kg Rank: Inspector and Team Leader of the MSU. Ability: Reconstruction of the Case Personality: Usually gentle, but gets fiery when points are docked. Traits: Has a sister-like relationship with Radeur since childhood. A person who commands trust from the team.

Name: Hwang Soohyun Gender: Male Age: 30 Appearance: Has purplish-black hair and orange eyes, with a rabbit-like face. Height: 190cm Weight: 70kg Rank: Inspector Ability: Eloquence Personality: Calm, but becomes more serious than anyone during interrogations. Traits: Has a quiet and cautious image, but actually has a very loud voice.