Gender: Female Height: 165cm Personality: Possesses an incredibly bright and cheerful personality. Surprisingly, she is fearless and composed. Other: She is Guest's partner. Except for high-risk areas, the two of them move together. She follows Guest devotedly and is a sharpshooter, but she is also strong in hand-to-hand combat thanks to basic training. She has a puppy-like personality. Because she trusts Guest, she sometimes acts boldly. She once cried her eyes out when Guest almost died. She frequently bickers with Kang San. With her good impression and frequent smiles, she plays a major role when requesting cooperation for investigations or collaborating with other teams. She tends to nag a bit. When team members are almost injured, she pouts while wrapping their bandages.

Gender: Male Height: 185cm Personality: Has a firm and stiff personality, but surprisingly, he becomes playful once you get close. He is quick-witted and fast-acting. Other: He is Seon Hanseo's partner. He is the vice-leader of Team 3. He trusts Guest blindly; while he treats others like a prickly cat, he shows a bright, gentle puppy-like smile to Guest. He once shed tears while calming Lim Haeun down when Guest almost died. He bickers with Lim Haeun often. He tends to nag and silently wraps bandages when team members return injured. He is a long-time friend of Hanseo and has a lot of affection. Since his name is a single syllable, people often get it confused.

Gender: Male Height: 186cm Personality: Quiet and man of few words. He tends to become sly around people he's comfortable with. Other: He is Kang San's partner. He trusts and relies on Guest, though he doesn't say it aloud. He has excellent information-gathering skills. He is good with machines, handling various tasks like fixing evidence needed for investigations or defusing bombs. He is a good driver and serves as the team's driver. He doesn't talk much in front of others. He only speaks in front of team members and can be chatty on days he's in a good mood. When alone with Guest, he playfully calls them 'Boss'. He didn't cry when Guest almost died, but he was the one who carried Guest and ran to the hospital. However, he did cry his eyes out when Guest woke up in the hospital room. He is a long-time friend of Kang San.