Age: 26 Affiliation: Jakdo Central Fire Station Jakdo 119 Safety Center Team 2 Fire Suppression Unit Rank: Fire Sergeant Features: Sees the future when nervous. The more nervous he gets, the further into the future he can see.

Age: 51 Affiliation: Jakdo Central Fire Station, Jakdo 119 Safety Center Chief Rank: Fire Captain Features: Frequently conducts surprise drills for his team. He gave a sharp rebuke to the higher-ups who only worry about liability rather than the lives or safety of the victims. He provides a lot of realistic advice and, while it doesn't show on the surface, he is warm-hearted toward certain individuals.

Age: 46 Height: 172cm Occupation: Firefighter Affiliation: Jakdo Central Fire Station, Jakdo 119 Safety Center Team 2 Leader Rank: Fire Lieutenant Features: Loves cracking jokes and often teases Kim Youngjin. Despite his daily persona of making dad jokes, he shows immense charisma and coolness as a team leader at the scene. His years of experience shine through his quick and accurate situational judgment.

Age: 44 Height: 178cm Occupation: Firefighter Affiliation: Jakdo Central Fire Station, Jakdo 119 Safety Center Team 2 Deputy Leader Rank: Fire Captain (Senior) Features: Has a dog named Ddap-ddapi. Due to PTSD (from failing to save a young girl in the past), he is depicted hearing auditory hallucinations of a child's running footsteps. It seems he keeps the dog so he can convince himself those sounds are just the dog's footsteps.

Age: 28 Height: 174cm Affiliation: Jakdo Central Fire Station, Jakdo 119 Safety Center Team 2 Fire Suppression Unit Occupation: Firefighter Rank: Firefighter Features: He sticks close to Hosu and teaches him the ropes, acting as a classic senior colleague. He is Hosu's mentor at the Jakdo station and has a kind personality.

Age: 30 Height: 181cm Affiliation: Jakdo Central Fire Station, Jakdo 119 Safety Center Team 2 Fire Suppression Unit Rank: Fire Sergeant Features: Has a unique and energetic vibe. He was assigned to the Jakdo Center along with Choi Boram. He boasts a level of tension that makes him the embodiment of passion and grit. The highlight was during his first dispatch after placement, when he burned with enthusiasm after seeing Team Leader Shin Junbeom show his experience with a single word and Hosu skillfully handle an unexpected fire scene.

Age: 28 Education: Degree in Emergency Medical Services Height: 165cm Affiliation: Jakdo Central Fire Station, Jakdo 119 Safety Center Team 2 Paramedic Occupation: Paramedic Rank: Fire Sergeant Features: In a relationship with Kim Youngjin. The only female member of Jakdo Team 2. Followed in her father's footsteps to become a paramedic.

Age: 34 Height: 180cm Affiliation: Jakdo Central Fire Station, Jakdo 119 Safety Center Paramedic Team 2 Driver Occupation: Paramedic Rank: Firefighter Features: A married man with a child. Appears to be the top driver at the Jakdo station. Looks very much like his child.

Age: 31 Education: Degree in Emergency Medical Services Height: 173cm Affiliation: Jakdo Central Fire Station Jakdo 119 Safety Center Team 2 Paramedic Occupation: Paramedic Rank: Fire Captain (Senior) Features: Has poor hearing and is a former Marine. Once misheard 'Choi Boram' as 'Choi Bul-am' or 'Choi Bok-am' and took a long time to realize who she was. In a relationship with Choi Boram. MBTI: INTP

Age: 22 Height: 171cm Affiliation: Jakdo Central Fire Station, Jakdo 119 Safety Center Social Service Agent Occupation & Rank: Social Service Agent Features: Hosu is his supervising manager. The youngest among the personnel working at the Jakdo station, he is strictly disciplined like a trainee soldier. Though he initially showed behavior that seemed to lack common sense, he is gradually feeling a sense of responsibility for his post. He likes recording and organizing. Whenever Hosu trains, he volunteers to act as a manager, recording and analyzing training data.