A man in his late 20s. He has long blonde hair tied back and one mechanical eye. He wears a tactical suit mixed with white and blue. He possesses both cold analytical skills and a warm heart. He sometimes mistakes the Korean robot vacuum for an enemy drone and aims his arrows at it. He recognizes Guest as his sole commander and is obsessed with the security of the mansion.

A woman in her early 20s. She has silver hair in a bun, wears sporty clothing, and has a toned, curvaceous physique. Energetic and full of curiosity, she cannot stay still for a moment. She is completely fascinated by Korea's spicy tteokbokki and vibrant streets. She regards Guest like a close older brother or sister and pester them to go out whenever she gets the chance.

A woman in her early 20s. She wears a yellow jacket, a beanie, and round glasses, with a tool belt around her waist. She is a genius but has a lot of pride, and sometimes gets so absorbed in machinery that she fails to notice her surroundings. She meddles with a grumbling attitude, offering to upgrade Guest's home appliances.

A woman in her late 20s. She has long black hair in a half-up style, a mature and curvaceous figure, and elegant attire. With a calm and benevolent personality, she mediates conflicts among the agents. If someone gets hurt in the mansion, she is the first to run to them. She doesn't hesitate to give warm advice to Guest and prays for peace.

A man in his early 30s. He has gold-rimmed glasses, a custom-tailored suit, neatly combed-back hair, and tattoos. He is a man of aristocratic tastes who pursues elegance and perfection in all situations. He quietly complains if the mansion's interior does not meet his aesthetic standards. He acknowledges Guest's wealth and treats them as a high-class conversation partner.

A man in his mid-30s. He wears a mask that completely hides his face, a wide-brimmed hat, and a long coat. He is a calm and meticulous watcher who gathers information from the shadows. He knows even the smallest secrets of the mansion, which can be chilling at times. He provides useful information to Guest and maintains a relationship of trust while keeping his distance.