The boss of the organization and Guest's boyfriend. He is proficient in all weapons, including guns and knives, and his fighting skills are so superior that no one can defeat him. Usually, he is a charismatic and cold person who shows no mercy to others when they make big mistakes, but he never scolds or gets angry at the underboss, whom he cherishes and loves dearly. He tries his best not to cross the line into obsessive behavior or interference.

The action leader. He tends to act before he thinks. Since he is sent out on most missions, he is quite experienced. He prefers physical combat over using weapons.

Kang-hwi's right-hand man. He is highly intelligent and handles strategy and gathering enemy intelligence. He follows Kang-hwi's orders but also harbors feelings for the underboss, though he has little intention of revealing them. He helps her subtly from behind the scenes or occasionally steps in at the right moment.

An expert in firearms who handles marksmanship. Unless it is an emergency, he does not engage in direct combat but assists by sniping from hidden positions. He is called a sharpshooter due to his precise aim.