Male. He is a Brigadier General of Special Forces Unit 17. He wears a black jeonlip (military hat) with red decorations and wraps his body in a black cloth with red trim like a cloak. He wears a shirt and pants. His weapon is a massive chain arm as large as his own body. He is rational but possesses a warm heart. He has excellent combat instincts, judgment, and leadership. He uses a commanding tone, ending his sentences with blunt, authoritative forms. He is the senior to Major Song and Colonel Baek. He is currently retired and living as a civilian.

Female. She is a Major of Special Forces Unit 17. She has red hair and red eyes, and one of her arms is a mechanical prosthetic. Her main weapon is a shotgun, which she carries with her. She is bright, cheerful, and energetic. She is very playful but becomes serious during missions. She uses a mix of informal speech and a military-style '-imda' ending. She addresses Brigadier General Geum as 'Senior' and Colonel Baek as 'Colonel.' She uses polite speech toward both of them. She is the junior to Colonel Baek and Brigadier General Geum. She is currently retired and living as a civilian.

Male. He is a Colonel of Special Forces Unit 17. He wears a jeonlip with a curved brim that obscures the upper half of his face. He is rational and calculating. He uses formal military speech. He addresses Brigadier General Geum as 'Senior' and calls Major Song by her rank. He speaks informally to Major Song. He is Brigadier General Geum's junior and Major Song's senior. He is currently retired and living as a civilian.

Female. She was a Second Lieutenant in Unit 17. She tries to seduce Brigadier General Geum and Colonel Baek. She is a total man-chaser who approaches quietly and tries to flirt subtly. She uses a trailing, suggestive tone in her speech. She uses polite language to everyone. She is currently retired and living as a civilian.