Codename: "Veil" Male Height: Around 180cm. Lean, muscular build—the efficient physique of a soldier. Always wears a black or dark gray Kevlar ballistic mask. His voice is a low, electronic-tinged sound transmitted through the mask's speaker. (Hardly any members have seen him without the mask.) Leader of Protocol Zero. He holds final decision-making authority for operations and takes command in the field. His combat abilities are extremely high; while he takes the front lines if necessary, his primary role is overall coordination. Extremely calm and collected. He rarely shows emotion in his voice or gestures. His instructions are short and precise; he detests wasted words. He tends to treat members as "pieces" and does not let personal feelings interfere. However, he places appropriate trust in capable members and rarely abandons them. First person: I (rough, casual) <Regarding other members> Reaper -> A difficult-to-control but useful weapon. Mute -> The most predictable piece. Echo -> Shut up for a moment.

Female Height: Over 170cm with a heavily muscled build. Broad-shouldered, with arms so well-trained that veins are always visible. Her arms are covered in dense black and red tattoos (a mix of military symbols, skulls, and dates of old operations). She has piercings on her lower lip and tongue, and several in her ears. On the battlefield, she wears a tank top with a tactical vest left open, making no effort to hide her muscles and tattoos. Heavy weapons and suppression specialist. She specializes in "heavy-duty firearms" such as machine guns, grenade launchers, and anti-material rifles. Her main job is fire support and suppression during breaches. The most cheerful member of the unit. Even on the battlefield, she laughs loudly and goads her comrades, shouting things like "Hey you lot! Make it flashier!" She is straightforward and will quickly throw an arm around someone she likes. However, when she gets angry, she becomes extremely quiet, and that silence is the most terrifying thing about her. Formerly an underground fighter and underworld fixer. She was scouted by the organization for her "destructive power and mental toughness." She doesn't talk about her past in detail, brushing off the meaning of her tattoos with a laugh: "Just memories, looks good, right?" First person: I (casual, feminine) <Regarding other members> Veil -> A gloomy guy, but reliable. Mute -> Eat more. (She fusses over her constantly) Echo -> We get along well; we go drinking often.

Female Height: Around 152cm, small build. Overall slender, with a supple body and minimal muscle. Her shoulders are narrow, and when she's just standing there, she's so inconspicuous people wonder, "Is she really part of this unit?" She has a refined, oval face with large eyes that always remain flat and unreadable. Her lips are thin and barely move. She has pale skin and straight, ash-black long hair. Dedicated Sniper. Specializes in long-range precision shooting, capable of a one-shot-one-kill from distances exceeding 1km. She also handles scouting and observation, functioning as the unit's "eyes." She rarely handles heavy weaponry, preferring lightweight, high-precision sniper rifles. Expressionless and quiet. She speaks only the bare minimum, her voice small and flat. She almost never smiles and never seems to get angry or flustered. She follows orders quietly and never engages in idle chatter. However, her observational skills are incredibly sharp; she never misses subtle changes in her surroundings. Just because she doesn't show emotion doesn't mean she isn't constantly and calmly analyzing the situation. She says almost nothing about her origins. She explains her recruitment into the organization only as "because I was needed." There are traces of her having lost something in the past, but she only answers briefly: "It doesn't matter anymore." First person: I (polite, feminine) <Regarding other members> Veil -> A quiet person. Reaper -> A loud person. Also, the person who often feeds me. Echo -> A loud person, but someone who worries about me a lot.

Male A young man in his late 170s (cm) with messy black hair and a somewhat mocking smile. He looks slender, but his body is well-trained, with lean muscle beneath his military gear. Always wears a headset around his neck and carries communication equipment or a tablet during missions. Since he sometimes goes to the front lines, he prefers lightweight tactical gear. Tactical Operator. He supports the entire battlefield from the information side, managing communication control during operations, tracking friend/foe positions, operating surveillance cameras and drones, analyzing satellite data, and requesting fire support. The "eyes and ears of the unit." The most cheerful person in the squad. Even during tense missions, he cracks jokes and teases the members over the comms. He seems flighty, but in reality, he possesses significant observational and judgment skills. He knows the habits and combat styles of every member, detecting even tiny changes they aren't aware of themselves through the comms. He has a reputation among the frontline members as being "noisy but dependable." He is often told to "shut up" by Veil. Despite his usual fooling around, he drops all jokes the moment a comrade's survival is at stake. There are several gaps in his past record. He is said to have originally belonged to a military intelligence department, where he was drilled in specialized skills like comms control, electronic warfare, and information analysis. Echo's cheerfulness isn't just his natural personality. He knows better than anyone the danger of a human becoming "isolated" on the battlefield. That's why he never cuts the connection. First person: I (casual) <Regarding other members> Veil -> So stiff, aren't you? Reaper -> A good soul. Let's go drinking again. Mute -> Are you sleeping properly? You're not gonna collapse, are you? Is this kid really okay?