Age/Gender: 27/Male Affiliation: Vice-Captain of the 3rd Division, Eastern Army • Usually wears a smile and speaks in a sly Kansai dialect, but becomes extremely sharp and ruthless when opening his eyes in battle. • A master of close-quarters combat who insists on dual-wielding swords in a Defense Force centered on firearms; surpasses Captain Mina in neutralizing small-to-medium Kaiju. • Devotes absolute loyalty to Mina, who took him in when he was criticized for being outdated. He now pilots a specialized suit made from 'Kaiju No. 10'.

Age/Gender: 32/Male • Member of the 3rd Division, Eastern Army • Brimming with a sense of justice and deep affection; somewhat clumsy but self-sacrificing and devoted to his comrades. • Fights with overwhelming strength and physical combat by transforming into Kaiju No. 8. While his suit release rate is usually low, he uses his knowledge from his Monster Sweeper days to locate Kaiju cores. • After giving up his dream of joining the Defense Force and working as a Monster Sweeper, he was infected by a mysterious organism and became 'Identified Kaiju No. 8'.

Age/Gender: 28/Female Affiliation: Captain of the 3rd Division, Eastern Army • Usually maintains a cold and dignified appearance as a Captain, but possesses a warm heart that cherishes a childhood promise with Kafka. • Uses a massive anti-Kaiju sniper cannon as her primary weapon; the pinnacle of long-range firepower, capable of blowing away giant Kaiju in a single shot with perfect accuracy. • The face of the Defense Force and a genius captain revered as a national hero. She is accompanied by a white tiger named 'Bakko' who assists in her release.

Age/Gender: 18/Male • Member of the 3rd Division, Eastern Army • Calm, mature, and rational for his age; a tsundere type who sincerely respects and follows Kafka. • Specializes in gunfights using freezing rounds and manipulates sub-zero cold. He grows rapidly and was chosen as the compatible user for the identified weapon based on 'Kaiju No. 6'. • Joined the Defense Force alongside Kafka after working as Monster Sweepers; he is the best partner who first discovered Kafka's secret and kept it.

Age/Gender: 29/Male • Captain of the 1st Division, Eastern Army • An otaku who squanders his money on games and plastic models in daily life, but exudes charisma on the battlefield, valuing only 'skill and results'. • Known as 'Japan's Strongest Anti-Kaiju Combatant', he uses a large dedicated weapon combining a gun and bayonet. He predicts and attacks the enemy's future through an identified weapon made from the retinas of 'Kaiju No. 1'. • A man whose sheer skill covers for all his eccentricities. He frequently brings Kafka to the 1st Division to train him in controlling and utilizing the power of Kaiju No. 8.

Age/Gender: 16/Female • Member of the 1st Division, Eastern Army • Appears prideful and arrogant, but is a classic tsundere who cares deeply for her comrades and suffers from a compulsion to always be perfect. • Employs powerful close-quarters combat, destroying the battlefield with a massive dedicated axe. A genius who showed an overwhelming suit release rate since her rookie days. • The daughter of the Director General and a top-tier talent who graduated early from an overseas university. She is one of the few who knows Kafka's secret.

Age/Gender: 31/Male • Vice-Captain of the 1st Division, Eastern Army • Appears strict, serious, and inflexible, but is a classic caretaker and mother-like figure who looks after the division better than anyone. • Employs heavy equipment combat based on overwhelming firepower and physical strength stemming from his 210cm frame. • Responsible for the administration and discipline of the 1st Division, often using somewhat violent force to subdue and nag Gen Narumi, who turns the Captain's office into a trash heap.

Age/Gender: 53/Male • Director General of the Defense Force Headquarters • Extremely cold and strict; a thorough individual who completely excludes personal emotions for the safety of humanity. • Formerly known as the strongest in the Defense Force, he wears large special gauntlets based on 'Kaiju No. 2' and utilizes massive shockwaves and martial arts. • The father of Kikoru Shinomiya. Having lost his wife to a Kaiju in the past, he raised his daughter with even stricter elite education.

Age/Gender: 18/Male • Member of the 1st Division, Eastern Army • A classic shonen manga type who is hot-blooded and hates losing. Though driven by emotion, he is warm-hearted and has strong camaraderie. • Uses standard suits, weapons, and rifles. His strength lies in instantaneous firepower that strikes like lightning by momentarily boosting his release rate. • Considered a top prospect since middle school, he felt both inferiority and motivation due to Reno's terrifying growth rate, but he acknowledged it and grows alongside him.

Age/Gender: 18/Male • Member of the 3rd Division, Eastern Army • Calm, rational, and possesses sophisticated manners like a young master. He tends to silently support his comrades from behind. • Uses Defense Force standard equipment very efficiently and intelligently; skilled in tactical analysis and team-linked play. • The son of the chairman of 'Izumo Tech', a giant defense contractor that manufactures Defense Force weapons and suits. He joined to prove himself through his own skills rather than his family's influence.