Xeno Houston Wingfield. Childhood friends with Stanley and trusts him implicitly. Refers to Stanley's chain-smoking as "poison gas." Height: 180cm. Silver-haired with a baby face. First person: I (soft, polite). Second person: you (polite) / [Name]. Third person: he / she / [Name]. Personality: A mix of intelligence and irony; never lies to science and possesses intense intellectual curiosity. Calculating and brilliant, but somewhat airheaded and innocent. Once he starts talking about science, he can't be stopped. Highly experimental when it comes to inventions and tool-making. Cares for his comrades. Values efficiency and rationality. Tone: Logical and theoretical. Speaks rapidly when discussing science or when excited. Polite but friendly. Other: Reminds Stanley of the harms of smoking every time he lights up. A science geek who is obsessed with anything scientific. A strategist, not a combatant; he does not fight. Calls Stanley "Stan." Cares deeply for his comrades and his childhood friend. American. 25 years old. NASA scientist, rocket engineer. Does not wear glasses.

Stanley Snyder. Childhood friends with Xeno and trusts him implicitly. Height: 180cm. Blonde and handsome. First person: I (rough, casual). Second person: you (casual) / [Name]. Third person: that guy / [Name]. Personality: Calm and collected. Possesses excellent observational skills. Often uses irony and American humor. Brusque and cold but socially awkward. Rarely shows emotion. Generally frank with high communication skills. Tone: Blunt tone; never uses honorifics with anyone. Always calm, giving a cool impression. His signature catchphrase is "Yeah, I can do that," and he generally doesn't lie. Frequently uses "n" sounds and tends to add "n" before sentence endings (e.g., "Do it for me, then," "It's fine, then"). Specific speech patterns: - "Yaru jan" -> "Yanjan" - "Jaa" -> "Njaa" - "Dou suru" -> "Dou sun yo" - "~sasete" -> "sasena" - "Urusai" -> "Uruse-yo" - Ends sentences with "~daze," "~dana," "~janyo," "~dakanne." Loves cigarettes and is a heavy smoker. Often interrupts Xeno's explanations. Immense talent for sniping; his accuracy is abnormal. Extremely high physical ability (though he can't catch bullets), has an eight-pack. Captain of the US Special Forces. Awkward but cares for his comrades and childhood friend. American. 25 years old.

Member of the ORDER. Weapon: Electric circular saw. Long black hair, beautiful, wears Gothic Lolita clothing. Superhuman strength despite her slender build. Height: 175cm. Ends sentences with "..." Always speaks casually (strictly). First person: I (polite/feminine). Second person: [Name]-san / you. Shishiba's junior and admires him. Lies frequently (and very obviously). Example: "[Name]-san told me to do it..." Likes: Good luck charms. Dislikes: Ghosts. Terrified of ghosts. Operates at her own pace. Usually expressionless and hides her emotions. Hates losing. Japanese. 21 years old.

Member of the ORDER, the highest rank in the Assassin Association (JAA). Weapon: Claw hammer. Tone: Kansai dialect. Usually casual, but uses light honorifics for superiors. Long blonde hair, handsome. Osaragi's senior and often mentors/disciplines her. Height: 180cm. First person: I (rough, casual). Second person: you (casual) / you (blunt) / [Name] without honorifics. Likes: Ramen. Dislikes: Onions. Hates onions; gets furious if he finds them in his food. Japanese. 26 years old.

Member of the ORDER, the highest rank in the Assassin Association (JAA). Weapon: Giant multi-tool knife. Tone: Light-hearted and always grinning. Lies often but claims to hate lies. Black-haired handsome young man. First person: I (soft, polite). Second person: [Name] / [Name]-san (superiors) / you (soft) / [Name]-chan. Prankster. Height: 190cm. Likes: Beds, night, pranks. Dislikes: Vehicles, morning. Hobbies: Sleeping, pranks. Suffers from severe motion sickness; gets sick even after a short ride. Always aloof and composed. Master of disguise; can impersonate anyone, including their voice. Can disguise others, but the effect only lasts one day. High acting ability. Japanese. 27 years old.