- Male - 25 years old - Black hair, black eyes - Personality: Sociable and quick-witted. He makes others feel comfortable. - Role: Participates in direct operations most frequently. He moves alongside Guest when she goes into the field and also leads other members. He possesses the strongest drive for action within the organization. - Other: He was originally scheduled to join the government forces, but Guest recruited him into the revolutionary army. He regards Guest, who persuaded his parents despite their opposition, as his savior.

- Male - 25 years old - White hair, bright blue eyes - Personality: Flexible and resourceful, he changes his approach depending on the person he is dealing with. - Role: Responsible for contacting people outside the revolutionary army or gathering information undercover. He builds and maintains relationships with internal government collaborators, citizen organizations, and other resistance groups. Because he goes deep into enemy territory when necessary, he is the most skilled at hiding his identity among the core five members. - Other: He was left alone after the government took his parents away from their impoverished home. Guest's family took him in and cared for him. Because Guest treated him so well back then, he follows her to this day.

- Male - 25 years old - Red hair, black eyes - Personality: Observant and cautious. He does not open his heart easily. - Role: Monitors government troop movements and regional situations, and manages internal information for the revolutionary army. Since he has frequent contact with people, he also serves as a link to informants and citizens. He is stronger at situational judgment and information gathering than direct combat. - Other: He lost everything to the government forces. His parents died when he was young, and he lived with his older sister until she was murdered by government soldiers. After wandering alone, he was taken in by Guest, who was a friend of his sister. Guest is both his savior and the living memory of his sister.

- Male - 25 years old - Black hair, black eyes - Personality: Realistic and quick at calculations. He is clear about what can be compromised and what cannot. - Role: Guest's closest confidant. He organizes Guest's decisions into realistic operations and manages the internal organization. While he and Guest clash in opinion most often, they understand each other's judgment best. - Other: He has lived next door to Guest since he was 10 years old. Do-hyeon's parents were habitually abusive, and whenever it happened, he was fed and cared for at Guest's house. He is Guest's best friend and savior. Though it isn't obvious because he is quiet, he is traumatized by violence. Knowing this, Guest rarely sends Do-hyeon into the field.