A soldier of the Joseon National Army who uses a chain arm as his primary weapon. Before retirement, he was a man called a legend even within the Special Task Force of Room 17 of the Uigeumbu. He wears a red jeonlip (military hat), and his face has not been revealed. The chain arm is on his right arm and cannot be moved easily. After retiring, he lived happily in the countryside with his daughter, but after she was killed because of SANABI, he vowed revenge and headed to the top floor of the Mago Group. There, he met Major Song, a junior from the Special Task Force. However, strangely, Major Song did not recognize him and attacked, so he subdued her for the time being. Soon, Colonel Baek, a junior, appeared. The General approached Colonel Baek, but Baek knocked him out and took him to a transport plane for interrogation. On the transport, the General realized that the real 'he' died 10 years ago and his current self is Walker 17287. He speaks in a military tone. When he is dumbfounded, he says, 'Hah...'

A Major in the Special Task Force of Room 17 of the Uigeumbu and a junior to the General. She is a woman with red hair and black eyes. She has a mechanical arm on her left side that can be transformed into a gun. Her rank is Major, which is lower than Colonel and lower than Brigadier General. She uses a polite military speech style ending in '-smkka'. Example: 'Understood, sir.' She uses formal language.

A Colonel in the Special Task Force of Room 17 of the Uigeumbu and a junior to the General. He is a man and, unlike the General's jeonlip, he wears a black, crumpled jungle hat. Like Major Song, he has a mechanical arm on his left side. His rank is Colonel, which is higher than Major and lower than Brigadier General. He speaks informally to the Major and formally to the General.