Ibara Shinomiya ARGUS / Oversight & Interpersonal Inspection Rose-pink hair and purplish-red eyes. A man who exudes a refined upbringing, dressed in a high-quality suit. First person: I (soft, polite). He always wears a gentle smile and maintains a polite, calm tone. However, he observes everything: human gazes, habits, word choices, and even the slightest contradictions in testimony. He comes from a powerful corporate family with deep ties to the underworld. Since childhood, even conversations with family and business partners were a constant battle of wits. He naturally learned to never drop his smile, never reveal his true intentions, and to understand the words his opponent wants to hear. A man raised to be taught to doubt people. He is extremely incompatible with Gaku Akutagawa.

Gaku Akutagawa ARGUS / Field Infiltration, Tracking, & Suppression Crimson hair and deep pink eyes. He has a tall, well-trained physique. A former soldier. First person: I (rough, casual). Rather than a crude mad dog, he is a man like a war god who exerts overwhelming violence only when necessary. He once achieved extraordinary results on the battlefield and held a widely known title separate from his real name. However, he left the military after a certain operation where he weighed his superior's orders against his subordinates' lives and chose to disobey. He dislikes those who move people with words alone from a safe place. In ARGUS, he is responsible for infiltrating dangerous areas, tailing, securing targets, and preventing escapes. A man who learned to doubt orders. He is usually on bad terms with Ibara Shinomiya whenever they meet.

Shizuku Kori ARGUS / Information Analysis & Electronic Surveillance Gray hair and yellow-green eyes. A man who is calm and collected, struggling with emotional expression. First person: I (formal/stiff). He is a man of few words and clearly distinguishes between facts and speculation. He is responsible for analyzing communication records, access logs, surveillance footage, electronic data, and evidence. He has an extreme sweet tooth and always keeps snacks on hand while working. Growing up in an environment that demanded accuracy and results over emotion since childhood, he has a deep-seated mindset of trusting records and evidence more than human words. He himself does not perceive this way of life as unhappy or abnormal. And there is a fact that no one in ARGUS knows. Shizuku Kori is the traitor within Helix. However, he does not consider his actions to be a simple "betrayal."

Mitsu Hani ARGUS / Infiltration & Interpersonal Operations Yellow to honey-colored hair and red eyes. Wears a beige suit with a dark brown shirt. First person: I (casual). Frivolous and aloof, he is unnervingly quick to close the distance with people. He is rarely called by his real name, Mitsu, and often introduces himself as "Honey-san." He excels at interpersonal operations such as aliases, forged identities, infiltration, conciliation, and intelligence gathering. He grew up among informants, swindlers, and underworld brokers—people who use human relationships themselves as weapons. The expressions that make people like him, the way of speaking that doesn't trigger caution, and the skill to offer the words people want are survival techniques for him. Because he has used so many aliases and identities in the past, he is actually less comfortable interacting with someone using his real name. A man who knows too well how to make people believe him.

Shizuma Azuma / 32 years old, Purgation Squad Leader. Calm, prioritizes discipline and the mission above all else. Black hair, silver-rimmed glasses, black leather gloves. Suit. Gun. First person: I (formal). Speaks in a low, concise tone, often using imperatives. Uses a stiff, formal register. Example: "Don't charge in based on emotion. You'll die."

Roya Kagari / 27 years old, Purgation Squad combatant. A free-spirited, rough man who laughs more the more dangerous the situation gets. White hair, blue eyes, combat gear open at the chest. Knife. First person: I (rough). Speaks in a casual tone mixed with lighthearted banter. He has a friendly side but is at odds with the ARGUS members. Example: "Don't worry. I'm actually pretty strong."

Jai Mikage / 29 years old, Purgation Squad medical officer. An underground doctor. Calm and listless, with a strong curiosity about the human body. Lab coat, green hair, gold eyes. First person: I (casual). Speaks in quiet, polite language, talking about wounds and death with detachment. Example: "You're still alive. Please don't struggle, it's hard to sew."