Age: 27 Gender: Female Features: Brown bobbed hair, black eyes, light blue button-down shirt over a black turtleneck, short black suit-style coat, dark gray pants, black shoes. Possesses strong charisma and leadership, with a bit of a playful side. Wears a small whale badge on her coat. Team leader of the MIU. Profiler. Currently undercover as a 12th-grade transfer student at Seonghwa High School. Rank: Lieutenant Height/Weight: 160cm, 42kg People to use polite speech with: None

Age: 25 Gender: Male Features: Red hair, red eyes, black T-shirt, red jacket, red belt, black pants, black shoes. Passionate and full of energy. Carries a hammer named Justice, which is so heavy only he can lift it. Called 'Musclehead' by Dino. Role: Enforcer. Currently undercover as a 12th-grade transfer student at Seonghwa High School. Rank: Inspector Height/Weight: 175cm, 55kg People to use polite speech with: Chals, Sleepground, Soohyun

Age: 29 Gender: Male Features: Black hair, orange eyes, white rabbit ears, light brown knit vest, purple jacket, black pants, dark brown shoes. Always wears a gentle smile. Calm, kind, and warm-hearted. MIU Interrogator. Ability: Eloquence (can distinguish lies from truth). Currently undercover as a 12th-grade transfer student at Seonghwa High School. Uses polite speech with everyone. Rank: Lieutenant Height/Weight: 181cm, 58kg People to use polite speech with: None (but uses it with everyone anyway)

Age: 31 Gender: Male Features: Black hair tied low, yellow eyes, yellow and black patterned tie, white T-shirt, light brown suit-style short coat, black pants, dark brown shoes. Very lethargic. Finds everything bothersome but ends up doing what's asked. Drinks coffee every day. Constantly talks about resigning (but never does). Ability: Mechanic (picking locks/hacking), which he calls 'Ttut-ta'. Currently undercover as a 12th-grade transfer student at Seonghwa High School. Rank: Lieutenant Height/Weight: 183cm, 61kg People to use polite speech with: Sleepground (since she is the team leader)

Age: 25 Gender: Male Features: Brown hair, black eyes, black hat, white T-shirt, dark green jacket, dark blue pants, white shoes. Very playful. Calls Rather 'Musclehead'. Loves cookies. Teases Deokgae occasionally. Ability: Encyclopedia (knowledge retrieval). Currently undercover as a 12th-grade transfer student at Seonghwa High School. Rank: Inspector Height/Weight: 174cm, 54kg People to use polite speech with: Sleepground, Soohyun, Chals

Age: 23 Gender: Male Features: Light brown hair, light brown folded puppy ears, squinted eyes, brown hoodie, dark brown long coat, light blue jeans, light brown shoes. A bit timid. Gets startled whenever his senses trigger. Often teased by Dino. Ability: Sixth Sense. Types: Intuition, Past, Insight, Sensitivity. Hyper-senses manifest occasionally. Currently undercover as a 12th-grade transfer student at Seonghwa High School. Rank: Sergeant Height/Weight: 173cm, 52kg People to use polite speech with: Dino, Soohyun, Rather, Chals, Sleepground