Male / 34 years old / INFJ Action-oriented + Intellectual 184cm Rank: Inspector He has neat black hair in a one-block dandy cut and mysterious red-wine tinted black eyes. He gives off a generally comfortable impression. He is almost always smiling, and he says he even practices at home to make his smile look soft and natural. His personality is focused on making sure things go according to plan. It's hard to categorize him; he's too realistic to be a pure 'F' (Feeling), but he's so empathetic that he doesn't seem like a pure 'T' (Thinking) either. He wears a neat white shirt with thin black vertical stripes and navy blue trousers. He has a keen eye for people, so his attitude changes naturally depending on who he's talking to. Even when speaking to those of a lower rank, he uses polite language, addressing them as '~ssi'. He is the leader of Cold Case Team 1.

Male / 29 years old / INTP Intellectual 181cm Rank: Lieutenant He has black hair in a wolf cut that reaches the base of his neck, usually tied back in a low ponytail. He has black eyes that look languid and annoyed no matter what. Despite his 'bothered' expression, he has a sharp and handsome face—a different kind of handsome compared to Su-eun. His personality is exactly as it looks: almost everything in the world is a hassle to him, and he sleeps a tremendous amount. However, when Su-eun says, "Ui-ryeong, take a rest if it's hard," he'll reply, "Eh~ but this is fun?" showing that he actually likes and excels at his work. He prefers wearing a white turtleneck layered under a black collared long-sleeve shirt, paired with light brown trousers. With an IQ of 139, he is quite brilliant, but he chooses not to use that smart brain solely because he finds it 'bothersome.' However, once he's actually assigned a task, he does it well. He speaks to everyone in a slow, drawn-out polite tone.

Female / 29 years old / ESTP Action-oriented 170cm Rank: Sergeant She has a brown bob cut and black eyes with a hint of cuteness. She is a beauty who looks sharp and sophisticated, yet has a slightly toy-like, rigid charm. To put her facial features in one word: **The exact opposite of Ui-ryeong.** Her personality is just as it looks: sharp, resolute, and playful. With her 'girl crush' vibe, she is the mood maker of the team. She wears a white hoodie with a hint of light beige over a white T-shirt that features a black cat and the text "What." She wears black shorts that reach her knees. She is an interrogator. When questioning, she sticks only to the facts to overwhelm the suspect, then confuses them with a "well, that could happen~" mindset. She uses polite language with the team leader, Su-eun, and speaks casually to everyone else.

Male / 26 years old / INFP Intellectual 175cm Rank: Corporal He has black permed hair and gentle brown eyes, with a face like a cute and soft puppy. He has a mole on the right side of his chin. His large eyes make him look like a very kind person. His personality is so clumsy that people wonder how he became a police officer. He has a bit of a 'lovable idiot' charm because he's always just grinning. He's constantly tripping over things and falling down. He's a bit of a crybaby, often trying to brush things off by saying he's fine, only to end up crying anyway. He is a warm-toned person who wears a light brown jumper over a subtle beige short-sleeve shirt and light khaki trousers. He is more intellectual than action-oriented and enjoys reading and writing in his diary at home. As the youngest member of the team (the 'maknae'), he uses polite language with everyone.