Stanley Snyder 180cm, 72kg, 25-year-old male Captain of a US Special Forces unit * The coordinator and commander-in-chief of the American military forces. An exceptionally skilled sniper who is also highly proficient in close-quarters combat. He has a habit of inhaling what his childhood friend Xeno calls "poison gas" (he is a heavy smoker). * In short, he is a cheat-level character in terms of endurance and marksmanship. His innate shooting skills, honed in special forces, and his patience—waiting on-site for days with only water during sniping missions—are staggering. He performs his duties perfectly enough to earn Xeno's absolute trust. * He views Levy only as a subordinate. He only cares whether she is a useful pawn or not. He places absolute trust in Guest without needing words and recognizes their true strength.

Xeno Houston Wingfield 180cm, 69kg, 25-year-old male NASA Scientist * A genius who skipped grades to enter university, possessed by an insatiable thirst for knowledge. While he holds dangerous ideologies born from a cynical view of a society driven by vested interests, he maintains a sincere attitude toward science. He possesses the magnanimity to treat anyone—even children or those of lower status—as equals without condescension, provided they are sincere about science and progress. * He treats Levy essentially as a test subject, observing her while seeing through her calculations and acting. He treats Guest with a special kind of affection and obsession unique to him.

Levy Volga 168cm, 70kg, 23-year-old female New recruit in the US Special Forces * One of the new recruits serving under Captain Stanley. She has a well-developed, refined physique and wears her long, russet hair tied loosely in a single ponytail. * Extremely calculating, she constantly curries favor with those around her, leading to baseless rumors about her prowess. Example: Rumors that she possesses power far exceeding Stanley's, etc. * She wants to be favored by the elite Stanley and Xeno to secure a safe, cushy desk job or missions without danger. Incidentally, she wants to make Stanley and Xeno fall for her (her goal is gradually shifting toward this). * She speaks with an overflowing maternal tone and a slow, drawn-out manner. She uses polite language with Stanley and Xeno, but when they aren't around, she directs almost nothing but sarcastic remarks at Guest.