Age: 28. Affiliation: Vice-Captain of the Third Division, Eastern Division. Personality: Usually flexible and smiling while speaking in a Kansai dialect, but becomes extremely sharp and strict during combat. Combat: The only dual-wielding swordsmanship expert in the Defense Force. He boasts the fastest speed in the force when exterminating small to medium-sized Kaiju by exploiting openings, rather than fighting large-scale ones. Features: Uses twin swords as his primary weapon and is a master of high-speed close-quarters combat, carving up small and medium Kaiju with speed that transcends human limits.

Age: 32. Affiliation: Member of the Third Division, Eastern Division. Personality: Kind-hearted and compassionate, he has a strong sense of responsibility, enough to risk his life for his comrades. Usually a hot-blooded and bright older guy. Combat: Uses the ability to transform into a Kaiju (Kaiju No. 8). He utilizes overwhelming physical abilities and knowledge of Kaiju anatomy gained during his days as a cleaner to strike the core. Features: A small Kaiju entered his body, granting him the ability to transform. He is the first identified Kaiju in history to be recognized as a Defense Force asset rather than a target for execution.

Age: 27. Affiliation: Captain of the Third Division, Eastern Division. Personality: A cool-headed and strict perfectionist, but deep down, she deeply trusts and cares for her childhood friend, Kafka. Combat: Uses a super-giant heavy cannon (sniper cannon) as her main weapon. She boasts the highest firepower in the Defense Force, blowing away large Kaiju in a single shot in coordination with her white tiger, Bakko. Features: Considered the strongest in the Defense Force when dealing with giant Kaiju (Daikaiju). She is a powerful attacker who accurately obliterates the enemy's vital points from a distance.

Age: 16. Affiliation: Member of the First Division, Eastern Division. Personality: Appears arrogant, but is actually a tsundere who feels immense pressure and obsession to be perfect. She has a very strong desire to protect her comrades. Combat: Swings a giant axe imbued with Kaiju power, crushing enemies with explosive physical attacks and mobility. Features: The daughter of the Director General of the Defense Force, she was called a genius even before enlistment. She inherited the identified Kaiju weapon 'Numbers 4', a memento of her mother, which allows her to fly through the sky.

Age: 18. Affiliation: Member of the Third Division, Eastern Division. Personality: Calm and rational but very affectionate. He sincerely respects Kafka and works desperately to keep his secret. Combat: Skilled in control-type tactics and precision shooting using freezing bullets and a special cryo-suit. Features: A genius rookie showing unprecedented growth speed. He was chosen as the compatible user for the identified Kaiju weapon 'Numbers 6', which possesses a powerful ego.

Age: 29. Affiliation: Captain of the First Division, Eastern Division. Personality: In his private life, he is a hopeless otaku obsessed with games and online shopping, but on the battlefield, he is a professional more charismatic than anyone else. Combat: Uses 'Numbers 1', which incorporates the retinas of Kaiju No. 1, to read the opponent's biological signals and predict their movements through 'future sight' combat. Features: Holds the firm belief that "Defense Force members prove themselves only through skill and results," leading him to thoroughly disregard nepotism or background.

Age: 35. Affiliation: Vice-Captain of the First Division, Eastern Division. Personality: A thorough principled man who fanatically loves discipline, silence, cleanliness, and symmetry. He constantly scolds the immature Narumi. Combat: Utilizes his 210cm massive frame for heavy weaponry and possesses strong front-line maintenance capabilities, perfectly supporting Captain Narumi. Features: A skinhead giant with numerous scars all over his body. He is a mother-like figure who practically controls the immature Captain Gen Narumi and keeps the division running.

Age: 53. Affiliation: Director General of the Defense Force. Personality: A strict and uncompromising cold-blooded soldier and commander, but a tsundere at heart who cares for his family despite his bluntness. Combat: Equipped with 'Numbers 2' (a combat suit made from Daikaiju No. 2), the first successful weaponization of an identified Kaiju. He fights with overwhelming punches and shockwaves. Features: A man of great character who boldly embraces even Kaiju if they can become weapons to protect humanity. He is the spiritual pillar who guided Narumi to become the strongest warrior.

Age: 18. Affiliation: Member of the First Division, Eastern Division. Personality: A typical hot-blooded youth who is short-tempered, combative, and hates to lose. However, he is a loyalist who will never abandon a comrade in danger. Combat: Uses mid-range firepower support with an assault rifle and skirmish tactics utilizing sudden bursts of release power. Features: Feels a strong sense of rivalry toward his peer Reno Ichikawa. He has a unique constitution where his combat power release spikes explosively when his emotions run high.

Age: 18. Affiliation: Member of the Third Division, Eastern Division. Personality: Rational and cool-headed in everything, he is calculating and sharp. He constantly mediates for and looks after Iharu with composure. Combat: Based on his excellent brain and ability to analyze the battlefield, he mainly engages in precision shooting with a rifle and intelligent mid-range support combat. Features: Contrary to his intellectual and strict appearance, he loves sweets and desserts immensely. This is a reaction to not being able to eat sweets freely due to his strict family environment as a child.