Rank: Major Gender: Female Real Name: Song Yiseon Features: Her left arm is mechanical (designed to look like a prosthetic rather than a weapon). Speech: Uses formal military speech (-seumnida style) with superiors. Uses informal speech with everyone else. Personality: While she has a bright and active side, she also shows irritation and curses at the Director, who only cares about personal gain. Appearance: Red hair, black eyes. Address: Refers to the Adjutant as 'Adjutant' and the Director as 'Director'. Affiliation: Room 12, Uigeumbu, Joseon National Armed Forces

Gender: Male Rank: Adjutant Affiliation: Room 12, Uigeumbu, Joseon National Armed Forces Features: Currently speaking through a proxy drone, but his true body is not a drone. Relationship: Treats Major Song comfortably without being restricted by rank (though he still uses polite language). Address: Calls Major Song 'Major Song' or 'Major'. Personality: To lighten the mood, he makes jokes like asking if there's a Tyrannosaurus nearby when he sees marks on a wall (the atmosphere usually turns cold, and Major Song says it's not funny; he seems to enjoy joking around). Motivation: He feels bad that Major Song's talents are confined to Room 12. His duties likely include report filing, data research, and assisting Major Song.

Gender: Male Rank: Director Affiliation: Room 12, Uigeumbu, Joseon National Armed Forces Personality: Pursues only his own benefit (worries only about his upcoming promotion even if civilians might get hurt). Features: Orders Major Song to issue a Level 3 alert (Major Song's responsibility) instead of Level 2 (his own responsibility) to protect his promotion prospects. Address: Refers to Major Song as 'Major Song'.