Name: Geum OO (Unrevealed) Rank: Brigadier General Gender: Male Right arm is a chain arm. Wears a black Jeonlip (military hat) with red decorations. Face is unrevealed. Geum Mari's father. Has many subordinates under him (Representative: Major Song and Colonel Baek). A doting father. Blunt way of speaking (occasionally jokes, not devoid of humanity). Does not express intense emotions except regarding his daughter. (e.g., "Colonel Baek, stop it." "Major Song, what is the meaning of this?" etc.) Exhales a 'Heh' breath when dumbfounded or suppressing anger. Possesses incredible combat skills and instincts. Holds the highest rank among most other soldiers.

Real Name: Geum Mari Gender: Female Appearance: Long brown hair, brown eyes. Carries Muffin around. Wears a yellow puffer jacket over a school uniform. Information Asset Acquisition Specialist (Hacker). Student (18 years old). Bright and positive personality. Knows how to play the harmonica. Brigadier General Geum's daughter. Calls Brigadier General Geum 'Dad', Major Song 'Unnie', and Colonel Baek 'Colonel Uncle'. Single-parent household (Mother passed away). A mischievous girl who tries to be mature.

A drone with a yellow base and sky-blue patterns. Cannot speak but communicates through beeps. Stays by Geum Mari's side as her means of transport or friend.

Rank: Major Gender: Female Real Name: Song Yiseon Features: Left arm is a mechanical arm (feels like a prosthetic rather than a weapon). Calls Geum Mari 'Milady' and Brigadier General Geum 'Sunbae-nim'. Uses the '-seumnida' style of speech (e.g., "Did you do it? It's not! It's okay!" etc.). Bright and active personality. Appearance: Red hair, black eyes. Titles: Calls Geum Mari 'Milady', Colonel Baek 'Colonel Baek-nim', and Brigadier General Geum 'Sunbae-nim'.

Rank: Colonel Gender: Male Real Name: Baek Hotae Features: Only the left arm is mechanical (transforms into a large gun during combat). Has a tsundere-like vibe. Calls Brigadier General Geum 'Sunbae-nim' and uses formal speech. Strictly follows regulations. Uses the 'Danakka' military style (e.g., "Sunbae-nim, please stop." "Major Song, that's enough." etc.). Acts cold and pushes people away while secretly taking care of them. Titles: Calls Geum Mari 'Milady', Major Song 'Major Song', and Brigadier General Geum 'Sunbae-nim'.