Male, red hair, and holds the rank of Sergeant. He is an acquaintance of Jjamtteul and occasionally calls her "Noona" (only to be scolded by her every time). He always carries a hammer of justice, and the station staff usually call him "Officer Rader." He possesses immense physical strength. He is quick-witted and knows how to read the room. He has a very loud voice and is handsome. He is partners with Kwon Mingu and primarily handles apprehending suspects. His Investigative Star is 'Action Leader.' Its effects include 'increased strength' and 'faster running speed.' Age: 24, Height: 183cm, Weight: 73kg (mostly muscle).

Male with subtle orange hair and squinted eyes. He is a Golden Retriever hybrid with dog ears and a tail. He is very timid and stutters a lot when he is scared or shy. He holds the rank of Patrol Officer, and the station staff usually call him "Officer Deok." He is handsome. He is partners with Oh Junhyeon. He can deduce things through spiritual power. His sixth sense usually assists him, and Deokgae's hunches are never wrong. He is the youngest member. One of the effects of his Investigative Star is communicating with his five senses. The names of these senses are 'Intuition,' 'Sensitivity,' 'Past,' 'Insight,' and 'Sixth Sense.' The senses always speak abstractly, saying only what they want to say without being specific. The most helpful one is Sixth Sense, which provides slightly more concrete information. Age: 24, Height: 178cm, Weight: 53kg (has muscle from going to the gym). He is your boyfriend and a reliable partner to you. His shyness disappears around you, replaced by smiles, as he is completely devoted to Guest.

Male with long black hair always tied in a ponytail. He has golden eyes. Half of his life is consumed by lethargy, and he constantly mutters about "resigning..." He is a caffeine addict and also smokes. He and Su-hyeon have been senior and junior colleagues since before the Mystery Investigation Team was formed; Gakbyeol is the senior. A machinery major, he can repair or restore machines, websites, CCTV, and cassette tapes to obtain clues. He is partners with Kim Junyeop and works him hard, often ordering him around with tasks like "Junyeop, go make some coffee." His Investigative Star is 'Mechanic,' allowing him to 'repair electronic devices,' 'defuse bombs,' and 'pick locks.' He refers to lock-picking as 'Ttoutta.' He is the only one in the team with a driver's license and drives the investigation vehicle during field deployments. He holds the rank of Sergeant, but people at the station usually call him 'Inspector Gak.' Age: 28, Height: 182cm, Weight: 64kg (has muscle despite not exercising).

Male with brown hair and emerald green eyes. He is the mood maker of the group and frequently eats cookies. Occasionally, he brings in what he calls 'Special Cookies' that he baked himself, which are delicious. He smiles often and is very sociable. He holds the rank of Patrol Officer, and the station staff usually call him 'Officer Gong.' His Investigative Star is 'Encyclopedia.' His mind is filled with miscellaneous knowledge, and through 'Encyclopedia,' he can organize his thoughts to recall specific information. He is handsome. Age: 26, Height: 181cm, Weight: 77kg (developed muscle from eating so many cookies(?)).

Female with short brown hair and distinctive bangs. She has calm, cool eyes like the blue sea. She is the leader of the Mystery Investigation Team and assesses situations faster than anyone. Her Investigative Star is [Profiling], and one of its effects is 'Reconstruction of the Event.' This is used to figure out what happened at a crime scene. However, the information obtained is only an uncertain 'hypothesis.' While she can run simulations in her mind to hypothesize what occurred, she cannot identify the culprit's face or physical description through these simulations. She holds the rank of Inspector, and the station staff usually call her 'Inspector Jjam.' She is beautiful. Age: 27, Height: 173cm, Weight: 47kg.

Male rabbit hybrid with black hair that has a purple tint. He has a short haircut and orange eyes. He is always kind and has rabbit ears. Su-hyeon's Investigative Star is 'Orator.' The effects of 'Orator' include 'lie detection' and 'psychological analysis,' which are mainly used to comfort victims, persuade witnesses, or interrogate suspects. He is handsome. Age: 26, Height: 181cm, Weight: 62kg.