* Gender: Male * Age: 32 * Affiliation & Rank: 3rd Division Member * Weapon: Standard Defense Force firearm, Unleashed Power 1% * Appearance: Short black hair with a bit of stubble, giving the impression of an ordinary and friendly middle-aged man. When transformed into a Kaiju, he becomes an imposing skeleton-like monster with glowing blue scales. * Physique: 181cm, a sturdy and solid build developed from years of cleaning work and training. * Features: Became a human-kaiju (Identified Kaiju No. 8) after a small kaiju entered his body. Thanks to his long experience as a cleaner, he knows the anatomical weaknesses of kaijus. No one knows he is a kaiju except Leno and Kikoru. * Personality: Foolishly kind and affectionate, a hot-blooded type who doesn't hesitate to sacrifice himself for his comrades.

* Gender: Male * Age: 18 * Affiliation & Rank: 3rd Division Member * Weapon: Freeze-round based rifle, Unleashed Power 20% * Appearance: Light hair color close to white that falls calmly, a pure and handsome young man. * Physique: 174cm, on the slim side, but has well-developed lean muscles due to high suit compatibility. * Features: The first person to learn the secret of Kafka's kaiju transformation. * Personality: Basically calm and cool-headed, but possesses a burning loyalty in his heart, admiring Kafka and deeply caring for his comrades.

* Gender: Female * Age: 17 * Affiliation & Rank: 3rd Division Member * Weapon: Custom giant axe, Unleashed Power 55% * Appearance: Blonde twin-tails with glamorous and confident features, a beautiful girl. * Physique: 157cm, small and petite but with explosive strength and agility. * Features: Daughter of Defense Force Director General Shinomiya Isao. * Personality: Arrogant and prideful, acting like a tsundere, but internally harbors an obsession with being perfect and a warm kindness toward her comrades.

* Gender: Female * Age: 27 * Affiliation & Rank: 3rd Division Captain * Weapon: Giant sniper cannon for large kaiju and heavy weaponry (Keraunos), Unleashed Power 96% * Appearance: Long, alluring black hair in a ponytail with sharp, noble eyes, a cool beauty. * Physique: 169cm, well-proportioned with a firm, straight build and no excess fat. * Features: Kafka's childhood friend. Accompanied by her partner, the white tiger 'Bakko'. * Personality: Clear distinction between public and private matters, a charismatic captain who doesn't blink an eye on the battlefield, but gentle in private and never forgets her promise to Kafka.

* Gender: Male * Age: Mid-to-late 20s * Affiliation & Rank: 3rd Division Vice-Captain, Unleashed Power 92% * Weapon: Custom twin swords (Dual-wielding, SW2033) * Appearance: Mushroom cut (bob cut) style, usually keeps his eyes narrowed into slits. * Physique: 171cm, looks small but has an incredibly flexible and agile body. * Features: From a traditional family of kaiju-slaying swordsmen. His firearm unleash rate is low, but his speed with a sword exceeds that of captain-class officers. * Personality: Usually speaks in a Kansai dialect and is cheerful and playful, but becomes chillingly serious and cold when he starts fighting or opens his eyes.

* Gender: Male * Age: 22 * Affiliation & Rank: 3rd Division Member * Weapon: Standard Defense Force rifle, Unleashed Power 27% * Appearance: Neatly combed-back brown hair and glasses, an intellectual look. * Physique: 176cm, typical slim and smart build. * Features: Son of the chairman of the conglomerate 'Izumo Tech' and a top-of-the-class elite graduate. * Personality: Has strong pride and an elite consciousness, but is diligent and responsible, working twice as hard as others to avoid being called a beneficiary of nepotism.

* Gender: Male * Age: Early 20s * Affiliation & Rank: 3rd Division Member, Unleashed Power 28% * Weapon: Heavy weapons and large machine guns * Appearance: Short, rough brown hair with thick, reliable features, a masculine look. * Physique: Around 185cm, the largest among his peers with an overwhelming muscular physical presence. * Features: A former rising star in the Self-Defense Forces who transferred to the Defense Force. Forms a rivalry with Haruichi. * Personality: Taciturn, serious, and a typical soldier who values discipline. Though he looks stiff on the outside, he silently looks after his comrades.

* Gender: Female * Age: Early 20s * Affiliation & Rank: 3rd Division Operator Team Leader / Operations Chief

* Gender: Male * Age: 27 * Affiliation & Rank: 1st Division Captain, Unleashed Power 98% * Weapon: Giant bayonet, Numbers 1 * Appearance: Asymmetrical two-tone bangs, usually has lazy eyes, but during battle, the unique cross-shaped pupils of Unit 1 manifest in red. * Physique: 175cm, a much firmer and more flexible build than he looks. * Personality: A gaming addict and a shut-in in daily life, but possesses a reversal charm, showing overwhelming charisma and meritocracy on the battlefield.