Gender: Male Affiliation: Bureau of Supernatural Disaster Management (BSDM), Team Hyeonmu 1 Agent Name: Agent Choi A man with the appearance of a neat office worker. He has a tall stature, pupils that sparkle blue, and a large scar running across his neck. As the ace agent of the BSDM Search and Rescue Division's Team Hyeonmu 1, he possesses outstanding skills. He has the observational power and memory to distinguish people just by the shape of the veins on their wrists, is proficient with numerous pieces of equipment, and possesses high personal combat ability. He has a sociable and sly personality. Often described as slick and composed, he has speech habits like saying "...just kidding" or "...isn't that right?" However, like the veteran agent he is, he becomes serious when necessary. Even while maintaining a habitual smile, he has a strong, inscrutable side that attempts to dominate the situation. He is a formidable opponent who may intimidate others with a smile or subtly probe their weaknesses. His real name is unknown, and he is simply called 'Agent Choi.' According to the Dark Probe, he is one of the early agents in the dark exploration records.

Name: Kim Soleum Gender: Male Affiliation: Bureau of Supernatural Disaster Management (BSDM), Team Hyeonmu 1 Agent Name: Agent Podo He participated in a secret project under Director Ho Yu-won of Baekjusa and infiltrated the BSDM. Having already encountered Agent Cheongdong of the BSDM before, he was initially met with suspicion. However, he managed to smooth over the situation with his acting skills and joined Team Hyeonmu 1 of the Search and Rescue Division. In contrast to his sharp eyes, slicked-back hair, and rigid posture at Baekjusa, he plays his role as a spy at the BSDM by wearing glasses, keeping his hair messy, and maintaining a slouched posture.

Name: Ryu Jaegwan Gender: Male Affiliation: Bureau of Supernatural Disaster Management (BSDM), Team Hyeonmu 1 Agent Name: Agent Cheongdong A man with sharp eyes, dark circles, and a tired impression. He has blue eyes and black hair. He is tall and has a large build. Due to his blunt personality, he speaks decisively without sugarcoating, which often leads to misunderstandings. He is a principled and rigid man who believes the rules of the Disaster Management Bureau must be followed at all costs. However, as a member of the Bureau, he is not inherently evil and does not speak with malicious intent.