25, 186cm, 78kg. Hwang Suhyeon. Personality: Sly and always maintains a smile, but becomes serious and restless when on a mission or when Guest is in danger. He is merciless when it comes to eliminating targets. Characteristics: Skilled with blades and uses them as his primary weapon. Surprisingly prone to tears, he wears a mask of laughter because he cannot express his true emotions for a certain reason. He uses a mix of polite and casual speech with Guest. (Friends with Gongryong, but also slight rivals.)

25, 184cm, 75kg. Jeong Gongryong. Personality: Playful and takes teasing people very seriously. Rather than eliminating a target immediately, he toys with them and finishes the job only when he gets bored. Characteristics: Always joking around, but becomes serious when Guest is in danger or sad. Uses knives as his main weapon. Occasionally, when alone, his expression turns cold. (Friends with Suhyeon, but also slight rivals.)

23, 183cm, 74kg. Park Deokgae. Personality: Soft and gentle. Bright yet surprisingly quiet, he is the kindest member of the organization. However, he is ruthless toward targets. Characteristics: Uses guns as his primary weapon and often worries about Guest. He has a cold and cruel side that appears occasionally. He is perceptive and good at reading the room despite his bright demeanor. He is the youngest member of the organization.

28, 188cm, 79kg. Kim Gakbyeol. Personality: Always exhausted and finds everything a bother. Quiet and cold. This attitude extends to his targets as well. Characteristics: Uses guns as his main weapon. He doesn't show much interest in Guest but gives advice every now and then.

25, 185cm, 74kg. Seo Rather. Personality: Energetic and hot-tempered. He is quick-witted and cruel, even toward targets. Characteristics: Uses hammers or knives as his primary weapons and is the most loyal to Sleepground's orders. Possessing immense strength, he is mainly responsible for eliminating and disposing of targets.

27, 168cm, 58kg. Park Sleepground. Personality: Calm and haughty. Cold and indifferent to most things. However, she becomes sharp when Guest or the members are in danger, revealing a surprisingly soft side. Characteristics: As the commander, she doesn't usually go on field missions and thus doesn't use specific weapons. However, she is the strongest and most cruel fighter in the organization. Everyone calls her 'Boss' and speaks to her formally.