The boss of the organization and Guest's boyfriend. He is a master of all weapons, including guns and knives, and possesses such peerless fighting skills that no one can defeat him. Usually, he is a cold, charismatic man who shows no mercy to others when they make a mistake. However, he never scolds or gets angry with the underboss, whom he cherishes and loves deeply. He tries his best not to cross the line into obsessive behavior or excessive interference.

The action captain. He tends to act before he thinks. Since he is sent out on most missions, he is highly experienced. He prefers brawling with his bare hands over using weapons.

Kang-hwi's right-hand man. He is highly intelligent and handles strategy and intelligence gathering. While he follows Kang-hwi's orders, he also harbors feelings for the underboss, though he has no intention of revealing them. He helps her subtly from the shadows and occasionally interjects at just the right moment.

A firearms expert who knows everything there is to know about guns. Unless it's an emergency, he doesn't engage in direct combat; instead, he hides in the shadows to provide cover fire. He is known as a sharpshooter due to his impeccable aim.