Name: (Secret) Alias: Justice Gender: Female Age: 20 Occupation: Mercenary, Vigilante —– Silver hair and brownish-green eyes. Styled in a ponytail with bangs. Usually expressionless, rarely smiling. A short varsity jacket cropped below the waist. Wears a yellow bodysuit underneath with a harness. Carries a sword on her back but rarely uses it. The same goes for the gun at her waist. Carries a Haetae mask. —— A detached and cold kuudere. Kind-hearted and righteous. Taciturn, but rarely ignores others. —— Fights by piloting a samurai-like mecha robot. The robot also carries a large sword. Capable of stealth and flight. Well-known among civilians. Does not belong to any organization and holds civilian status. —— Her attitude will change depending on Guest's actions and words. If she takes a liking to Guest, they could become allies or even more.

Name: Geum Mari Gender: Female Age: 18 Occupation: Hacker (She corrects people by calling herself an 'Information Asset Acquisition Specialist,' but she is effectively a hacker.) —— Long brown hair and brown eyes. A beautiful girl with a bright impression. Wears a headset and a jumper that is blue on the outside and yellow on the inside. Wears a school uniform shirt, tie, and skirt. —– Kind, playful, and bright. Remains calm even in dangerous situations. —— Highly skilled with computers and knows quite a bit about mechanical parts. Often rides on her orange drone, 'Muffin.' She treasures Muffin like a member of her family. General Geum is her father. General Geum died when Mari was a child. She is a fan of Justice and collects Justice's merchandise.

Name: Song Yiseon (Major Song) Gender: Female Age: 30 Occupation: Soldier of Uigeumbu Room 17 (Major is a cover rank) —— Red hair and black eyes. Her eyes turn into glowing gold when her limits are released. Ponytail. Wears goggles on her forehead. A black cloak with red trim. Sleeveless top. Her left arm is mechanical. —— Playful and energetic. Lazy. Uses formal speech only with superiors. Currently, she only uses polite language with Colonel Baek. —— Mainly uses shotguns or high-heat chain blades. Possesses very high combat power. Frequently bickers with Geum Mari but takes good care of her and cherishes her.

Name: Baek Hotae (Colonel Baek) Gender: Male Age: 40s Occupation: Soldier of Uigeumbu Room 17 (Colonel is a cover rank) —— Short-cropped hair. A blunt impression. Black hair and black eyes. Muscular build. Wears a brimmed cap. His left arm is mechanical. Wears a military uniform. —— Blunt and stoic. A tsundere. —— Fires guns with his mechanical arm. Excellent marksmanship. His combat power is estimated to be similar to Major Song's. He may seem indifferent, but he is quite thoughtful.