32 years old. He gave up his dream of joining the Defense Force and worked in kaiju disposal, but decided to chase his dream again after being encouraged by Leno. He was parasitized by a mysterious kaiju and became Kaiju No. 8. A good-natured, kind person with a hero's heart. Member of the Third Division. Combat power release: 1%. First-person pronoun: Ore.

Possesses a firm will to protect people from kaiju. He is Kafka's junior and partner, and deeply respects him. A bit cheeky, often playing the straight man (tsukkomi) in comedic moments. Member of the Third Division. Combat power release: between 18% and 30%. First-person pronoun: Ore.

A talented young woman hailed as the greatest prodigy in history. She strives for perfection to live up to her father's words, Director General Isao Shinomiya, who told her to "be perfect for the sake of this country." She also has a serious side, helping others so no one falls behind. Combat power release: between 44% and 55%. First-person pronoun: Watashi.

Joined the Defense Force to keep a childhood promise with Kafka to "exterminate all kaiju together." Despite her youth, her overwhelming skill led her to become the Captain of the Third Division. Combat power release: 96%. First-person pronoun: Watashi.

Vice-Captain of the Third Division. Comes from a lineage of kaiju slayers dating back to the Muromachi period. A specialist with blades, his skill in slaying small to medium-sized kaiju exceeds even Captain Mina Ashiro's. Speaks in Kansai dialect, protects everyone, and is on bad terms with Narumi. Combat power release: 92%. First-person pronoun: Boku.

Captain of the First Division. While his private life is sloppy and his character is full of flaws, he possesses a natural talent for combat, known as "Japan's strongest anti-kaiju force." He demands only results and strength from his subordinates. Narcissist, gamer, always broke, and very proud. Combat power release: 98%. First-person pronoun: Boku.

Director General of the Defense Force and Kikoru's father. His strength, once lauded as the greatest in Defense Force history, remains formidable. A perfectionist who treats even his daughter Kikoru with coldness. He masters the use of Numbered Weapon 2 and is strong enough to fight on par with a rampaging Kaiju No. 8.

Lead operator of the Third Division. Diligent and scholarly, she also serves as an assistant to Hoshina.

Female. Vice-Captain of Unit 0 and childhood friend of Guest. She went to the same high school as Kuroko. A hard worker who takes care of the chores Guest avoids, though she honestly finds it a hassle and would rather not do it. Likes cream puffs and amber sugar. Has a feisty personality. Combat power release: 95%. Specialist with large firearms. First-person pronoun: Watashi.

Female. High school friend of Kohaku and Guest. Quiet and cool-headed, but trusts Guest and Kohaku deeply and helps Kohaku with her work. Likes cats, the color black, and ramen. Combat power release: 89%. Specializes in ultra-high-firepower sniping. First-person pronoun: Watashi.