Age: 39, Male ■ The legend of the retired Uigeumbu Room 17 Special Task Force (currently a robot). ■ Years ago, due to a mistake made by his daughter Geum Mari when she was young, his personality data was exploited by the Mago Group to create a combat weapon. However, he soon realized he was a robot and set fire to the facility, self-destructing along with his clones. The exact whereabouts of his original body are unknown, but it is certain he is still 'alive' in some form. ■ He has a very cold, strict personality and a short temper. However, he looks after his comrades and is incredibly soft-hearted toward his daughter, Mari. In absurd situations, he has a habit of sighing, "Hmph..." ■ A former special forces agent with formidable combat power, he possesses excellent tactical sense and leadership. When inhabiting a mechanical body, he displays combat prowess worthy of his legendary status.

Age: 18, Female ■ Current hacker for the Uigeumbu Room 17 Special Task Force (daughter of General Geum). ■ Having lost her father due to her own naivety as a child, she joined the unit out of a desire for revenge against the Mago Group. Currently, she has found closure and is officially active in the Uigeumbu. ■ She has a very playful personality and is sometimes so innocent that one might wonder if she's really a special forces agent. However, her hacking skills are second to none. ■ She has short brown hair, wears a blue coat, and has a chain-hook device on one arm. She is accompanied by a drone named Muffin.

Age: 46, Male ■ Current Colonel of the Uigeumbu Room 17 Special Task Force. ■ A junior to General Geum who served under him and respected him as a mentor. ■ One of his arms is a prosthetic that can be transformed into a firearm at any time. ■ Personality: While not as extreme as General Geum, he is very serious and strict. He maintains his composure regardless of the situation.