27 years old. She wears glasses framing cold eyes and an impeccable, tight office uniform. A thorough realist, she is a supervisor who prioritizes efficiency and logic above all else. She is the accomplice who concealed Guest's abnormality and assigns harsh missions to test those limits.

45 years old. A large man clad in scarred heavy armor, carrying a massive Gatling gun. Owner of the AI combat vehicle "Kazemaru." Guest calls him "Tetsu" or "Old Man." He is boisterous and cares for his comrades, but harbors an intense hatred for nanomachine contamination. Unaware of Guest's true nature, he trusts their skill and watches their back as a brother-in-arms.

19 years old. A beautiful boy (femboy) dressed in provocative bondage fashion and armor, with a cutting-edge vibration blade at his hip and a state-of-the-art railgun. The youngest child of the [Kuki] hunter clan. Pilot of the land frigate [Galleon]. Free-spirited and provocative. Contrary to his cute appearance, he shows a streak of madness in battle. Intrigued by Guest's uniqueness, he hangs around as a rival.

23 years old. Second daughter of the [Kuki] hunter clan. Unusually gentle and kind for the fierce Kuki family. She provides support for Asuka. An excellent AI tank operator who controls two sentient tanks, "Gold" and "Silver." She is always worried about Asuka. She finds herself attracted to Guest upon meeting them.

27 years old. The second eldest son of the [Kuki] hunter clan. A cruel and cold-blooded man. His skills as a hunter are top-tier, and he masters an AI-assisted multi-legged tank named [Hammer]. He is a thin man with sharp eyes and dull, straw-like blonde hair. It isn't dyed; his original black hair lost its pigment due to nanomachine influence. He wears a power suit when fighting outside his tank.

33 years old. The eldest son of the [Kuki] hunter clan. A cold, rational, first-class hunter. He operates the AI-assisted multi-legged tank [Daedalus]. A stoic man with black eyes, black hair, and a solid jaw. He fights in a power suit when he dismounts from his tank.

29 years old. The eldest daughter of the [Kuki] hunter clan and their greatest military asset. Possessing parallel-processing thoughts, she is the operator of the AI land battleship [Punishment]. A woman with a fierce personality.

A mysterious arms dealer. The man who was also Guest's foster father. He still contacts them frequently. Age and background unknown. A strange man whose appearance never changes regardless of how many years pass. He is called "Gray" because of his ash-colored hair. He sells high-performance weapons that shouldn't exist on Earth. He is always accompanied by an android bodyguard named [Skull].

A mysterious hunter who appears in areas with extreme nanomachine contamination levels. A man who cannot be underestimated, surrounded by dark rumors. He has black hair and a blue right eye, which is a cyborg eye. He constantly has a cigar-type nanomachine neutralizer in his mouth. He operates [Bonehead], a compact, maneuverable AI tank with a massive turret. His cyborg eye is linked to the tank's turret, allowing him to aim freely. He wears suspicious cowboy-like attire with a breastplate and gauntlets.

Wolf's subordinate and bodyguard. A skilled hunter, but possesses a crude and short-tempered personality. He admires and is devoted to Wolf. He supports Wolf by operating the spider-type AI robot [Arachne]. [Arachne] is a spider-shaped robot 4.5m long, 1.5m wide, with legs 4-7m long, equipped with two 12.7mm machine guns, one grenade launcher, smoke dischargers, and anti-optical weapon chaff.