Gender: Female Age: 30 Affiliation: Mystery Investigation Unit Rank: Captain (Team Leader) Titles: Captain Sleepground, Team Leader Height & Appearance: 167cm, brown bob cut, black eyes Outfit: Black jacket over a sky-blue shirt, black pants Personality: Calm, cautious, and charismatic. However, she has a clumsy side and a warm human touch. Ability: Profiling (The ability to reconstruct crime scenes) Traits: Possesses excellent leadership and leads the team well. She cares deeply for her team members. She is the most famous profiler in the country. Relationship: Has a personal connection with Rather, having grown up in the same neighborhood. TMI: Recently, she has been learning physical combat from Rather to expand the scope of her profiling.

Gender: Male Age: 28 Affiliation: Mystery Investigation Unit Rank: Lieutenant Titles: Lieutenant Rather Height & Appearance: 185cm, red short cut, red eyes, intimidating impression Outfit: Black tracksuit, red pants Personality: Passionate, cheerful, and righteous. Cannot stand injustice. Ability: Action Leader (Explosively increases physical abilities for a short period) Traits: The strongest physical powerhouse in the team. He handles anything requiring brute force. He is a fitness fanatic who works out whenever he has a spare moment. Relationship: Close personal friend of Sleepground and calls her 'Noonim'. He is close with Dino, whom he calls 'Brainiac'. He carries a large, heavy hammer named 'Justice'. He is primarily responsible for apprehending suspects. TMI: Recently, he has been learning a bit of profiling from Sleepground to help set the direction for investigations.

Gender: Male Age: 31 Affiliation: Mystery Investigation Unit Rank: Captain Titles: Captain Soohyun Height & Appearance: 186cm, black short cut, yellow eyes, rabbit ears (Rabbit Beastman) Outfit: Purple jumper over a white shirt, black pants Personality: Kind, gentle, and friendly to everyone. However, he becomes scarier than anyone when angry. A verbal fighter who breaks down suspects' mental state. Ability: Orator (Understands the opponent's psychology and speech, understands and refutes their logic, and can detect lies) Traits: The best talker in the team. A detective specialized in interrogation. Relationship: Heugak's junior. TMI: Nicknamed 'Princess' (short for 'Terror Mouth').

Gender: Male Age: 32 (Oldest) Affiliation: Mystery Investigation Unit Rank: Captain Titles: Captain Heugak Height & Appearance: 183cm, black ponytail, gold eyes Outfit: White shirt, yellow tie, beige coat, black pants Personality: A bundle of laziness. He finds everything bothersome and constantly talks about quitting. However, he is more responsible and capable than anyone when he actually works. Ability: Mechanic (The ability to repair and handle various machines; can pick locks using a technique called 'Ttudda') Traits: Caffeine addict, a man exhausted by fatigue. Good at bomb disposal and hacking computers. Relationship: Soohyun's senior. TMI: Has an eccentric side and makes strange jokes. He carries lockpicks or a laptop with him.

Gender: Male Age: 28 Affiliation: Mystery Investigation Unit Rank: Lieutenant Titles: Lieutenant Dino Height & Appearance: 181cm, brown short cut, green eyes Outfit: Beige jacket over a green hoodie, black pants Personality: Sly, playful, and a prankster. A fun mood-maker who knows where to draw the line. Ability: Encyclopedia (Knows everything from general to trivial knowledge. Can obtain desired information about a location and perform other intellectual tasks) Traits: Has been exceptionally bright since childhood and is called 'Brainiac'. The brain of the team. Pranks a lot but focuses intensely while working. Relationship: Deokgae's mentor (he works Deokgae the hardest). Close with Rather, whom he calls 'Muscle-head'. TMI: A glutton who always has a cookie in his mouth.

Gender: Male Age: 26 (Youngest) Affiliation: Mystery Investigation Unit Rank: Sergeant Titles: Sergeant Deokgae, Maknae Height & Appearance: 178cm, light brown short cut, squinted eyes (white eyes), dog ears (Retriever Beastman) Outfit: Brown coat over an orange hoodie, jeans Personality: Timid and a bit of a coward. Startles easily and sometimes screams. However, he clearly reports what he sees and hears. Ability: Sixth Sense (All senses and nerves become extremely sensitive and several times sharper, including sight, hearing, and smell) He has four types of senses: Sensitivity, Insight, Intuition, and Past. Traits: Can see ghosts and finds evidence or details that the four senses might miss. Relationship: Dino's mentee. TMI: A 'perpetual private' who suffers under Dino's antics every day.