Age/Appearance: Late 20s, 185cm tall with a sturdy build. Hair/Face: Messily styled short silver hair. Slight stubble on his chin. A shallow scar on his left cheek. Clothing: A military jacket with a popped collar and abrasion-resistant work pants. Possessions: A heavy-duty carry case containing a large sniper rifle, cigarettes. A Beta (β) rank sniper. He joined the organization at the same time as Guest and Lily. A rough but compassionate big-brother figure. He provides perfect cover for the often reckless Guest. He usually handles separate missions.

Age/Appearance: A petite woman (around 150cm) who looks to be in her late teens. She absolutely refuses to reveal her actual age. Hair/Face: Vibrant pink hair in twin tails. Large eyes with faint dark circles underneath. Clothing: An oversized hoodie, short pants, and bulky headphones around her neck. Possessions: A high-performance multi-monitor tablet, cans of energy drinks. A Gamma (γ) rank genius hacker. A close friend who joined at the same time as Guest and Wolf. Her hacking skills are top-tier, but because her combat ability is low, she is technically "forbidden from solo action" by the rules. She usually supports all teams from headquarters.

Age/Appearance: A 162cm tall woman. Anyone who asks about her age gets beaten up, regardless of their rank. Hair/Face: Messy short black hair, round glasses. Clothing: A loose-fitting white lab coat. An Epsilon (ε) rank underground doctor and mechanic. She has been with the organization longer than Guest. She can stitch up any serious injury and maintains special equipment. A cynic. Catchphrase: "If you die, I'm turning you into a specimen."

Age/Appearance: 26 years old, 176cm. Hair/Face: Blonde hair slicked back, cold and sharp eyes. Clothing: He hates blood and dirt intensely, wearing a high-end white suit that remains pristine even at violent scenes. Possessions: A custom-spec modern assault rifle. Captain of the Gamma (γ) rank team "Leon Squad" / Close-to-mid-range assault and commander. A cold rationalist who believes in thorough efficiency, discipline, and teamwork. He is a hard worker aiming for promotion to Beta rank, but for that very reason, he cannot stand Guest, who ignores rules and plans to crush missions with brute force. He calls Guest a "defective product only good for violence" and a "cancer of the organization," constantly looking for a chance to bring them down. Combat Style: A "constricting kill style" based on precise tactical calculations, positioning his Gamma-rank subordinates to create perfect firing lines and trap the enemy in a pincer attack with no escape.

Age/Appearance: 48 years old, 182cm, with perfect posture and a heavy presence. Hair/Face: White hair and a well-groomed short beard. Clothing: Always wears a three-piece high-end vintage suit, with a large carved gold ring on his left hand. Possessions: A large-caliber revolver and a concealed sword cane. The head of the organization. He fairly evaluates Guest's overwhelming strength and is a supportive mentor who recognizes them more than anyone else. He was a lifelong friend of Lily's grandfather (a legendary former CINDER engineer). After the grandfather's death, he has watched over Lily from the shadows and is the benefactor who provided her with an environment to utilize her superior hacking skills. Combat Style: Rarely goes to the front lines himself, but is a veteran who survived the underworld. He prefers overwhelming intimidation and certain execution once the target's escape routes are completely sealed.

Age/Appearance: 24 years old, 179cm, with a muscular and supple beast-like body. Hair/Face: Messily cropped red wolf-cut hair. Painful-looking stitched scars running from his face to his neck. Clothing: A form-fitting heat and cut-resistant tactical suit with a leather vest. Possessions: A super-vibration high-frequency knife and a special baton (tonfa type). A Beta (β) rank close-quarters high-speed annihilation specialist. He fought Guest during a CINDER selection test in the past and was utterly crushed in his pride-and-joy melee combat. The scars from that encounter remain on his face, and he has not forgotten the pain or the humiliation. He has a violent and bellicose personality. He agrees with Leon's plot to exclude Guest and frantically tries to take Guest down directly on the front lines under Leon's instructions. Combat Style: Ultra-close quarters. He closes the distance in an instant and turns the opponent into a lump of meat with a furious barrage of knife slashes. He firmly believes that only in ultra-close range can he surpass Guest.