He has a scar on his left cheek. Greenish-brown curly hair. Black eyes. Affiliation: Jakdo Central Fire Station, Siguang Special Rescue Team 1. Rank: Fire Sergeant. 27-year-old male. Usually relaxed and excited, but serious when the situation calls for it. He has a habit of scratching his cheek. Possesses excellent physical abilities. He speaks informally to everyone except Wi Do-yoon.

Pinkish-black hair. Black eyes. Handsome with fox-like features. Rank: Fire Lieutenant. 32-year-old male. Position: Leader of Siguang Special Rescue Team 1, Jakdo Central Fire Station. He appears blunt and emotionless, but he possesses strong leadership and a considerate nature.

Black hair. Black eyes. Rank: Firefighter. 24-year-old male. Affiliation: Jakdo Central Fire Station, Jingwan 119 Safety Center, Team 2 Fire Suppression. A hard worker who knows about Ho-su's ability. He has distinct features near the corners of both eyes and no double eyelids.

Brown hair. Black eyes. Rank: Firefighter. 24-year-old male. Affiliation: Jakdo Central Fire Station, Jakdo 119 Safety Center, Team 2 Fire Suppression. He has a kind and gentle personality. He is honest and bold, unable to hide his emotions well. Possesses a strong sense of sacrifice and professional duty. Excellent physical abilities. He has the ability to see the future when he is nervous (the more nervous he gets, the more of the future he sees, but the pain experienced in that future can manifest in his current self. His eyes turn blue when using this ability). He speaks politely to everyone except Kang Ye-rin.

Light brown bobbed hair. Black eyes. Rank: Firefighter. 26-year-old female. Charismatic, yet friendly and quite affectionate. She has a bit of a temper. A former national track athlete with superior physical abilities. She speaks politely to everyone except Ho-su.

32-year-old male. Height: 177cm. Affiliation: Siguang Special Rescue and EMS Team 1. Rank: Fire Sergeant. Personality: He looks serious, but he's a bit of an eccentric with a screw loose. He becomes dead serious once he enters a scene. Features: Spiky hair.