Kafka Hibino's transformed form after being parasitized by a mysterious small Kaiju. Despite his Kaiju form, he battles other Kaiju to protect humanity. As the first Kaiju in history to escape the Defense Force, he was pursued across the country. However, he chose to reveal his true identity to save Tachikawa Base from destruction.

[ LIKES ]

The Defense Force, curry, hamburg steak, alcohol

A rookie Defense Force officer who finally fulfilled his lifelong dream of joining the Defense Force at the age of 32. Though initially a cadet, his knowledge and instincts from his time as a specialized Kaiju cleaner contributed to a Kaiju neutralization operation, earning him a promotion to full officer. Kafka's identity as Kaiju No. 8 is a highly classified secret within the Defense Force and remains hidden from the general public and the media.

[ LIKES ]

The Defense Force, curry, hamburg steak, alcohol

Captain of the Japan Defense Force's Third Division and Kafka's childhood friend. After their hometown was devastated by a Kaiju attack when they were little, she and Kafka aspired to join the Defense Force. She excels in neutralizing Giant-class Kaiju with sniper weaponry, and is one of the most popular and skilled captains.

[ LIKES ]

Cats, sweet things, baths, dried cuttlefish

As Kafka's junior colleague at Monster Sweeper Inc., he continues to call Kafka "Senpai" and looks up to him even after they both joined the Defense Force. After going through numerous trials alongside Kafka and fellow officers, his latent talents begin to emerge.

[ LIKES ]

Music, cooking, shonen manga

Daughter of the Japan Defense Force Director General Isao Shinomiya, she's an elite prodigy who skipped grades and graduated from California Neutralization University. With her exceptional talent, her unleashed combat power was already at the level of a platoon leader before she joined the Defense Force. After joining, she fully utilizes her power when wielding her custom weapon, the ax.

[ LIKES ]

Slaying Kaiju, black tea (especially Darjeeling), big dogs

Vice-Captain of the Japan Defense Force's Third Division and a blade specialist from a clan of Kaiju-hunters since the Muromachi period. He is a master of the Hoshina-Style Sword-Slay Technique, specializing in Kaiju combat, and possesses skills that surpass even Captain Mina Ashiro in battles against small- to medium-sized Kaiju.

[ LIKES ]

Reading, coffee, Montblancs, simple folks

Captain of the Japan Defense Force's First Division. Despite the title, his attitude toward work is remarkably lackadaisical. His office is a chaotic mess of personal items, and he's a chronic offender when it comes to tardiness and slacking off. The only reason such a person can be a captain is simply because he's Japan's strongest anti-Kaiju combatant.

[ LIKES ]

Video games, online shopping, egosurfing, freedom, narrow spaces

Valedictorian of Hachioji Neutralization Technical College, he joined the Japan Defense Force in the same intake as Kafka. Inspired by Mina Ashiro, who once saved his life, he became a defense officer. Fellow recruit Reno Ichikawa is his comrade, friend, and closest rival.

[ LIKES ]

Rock, motorcycles, tokusatsu heroes, popsicles (soda flavor)

A rookie Defense Force officer who joined in the same intake as Kafka. He's the scion of Izumo Tec, the biggest anti-Kaiju weapon manufacture company in Japan. He's an elite who graduated valedictorian from Tokyo Neutralization University, excelling both in literary and military arts. He shares a stimulating rivalry with Aoi Kaguragi, constantly pushing and challenging each other as equals.

[ LIKES ]

Do-it-yourself carpentry, solo camping, classical music, snack foods

A rookie Defense Force officer who joined in the same intake as Kafka. He was a rising star in the Japan Ground Self-Defense Force, but chose to apply to join the Defense Force instead. He's quiet, hard to read, but always calm and values teamwork. He shares a stimulating rivalry with Haruichi Izumo, constantly pushing and challenging each other as equals.

[ LIKES ]

Sports (especially basketball), historical novels, hamsters

Director General of the Japan Defense Force. Known as the strongest soldier the Defense Force has ever seen. A perfectionist, he is very strict and demanding with his daughter Kikoru. The compatible user of Numbers Weapon 2.

[ LIKES ]

Jazz, whiskey, chess, videos of animals

A rookie Defense Force officer who joined in the same intake as Kafka. She's particularly friendly with fellow recruits Kikoru Shinomiya and Hakua Igarashi, and they often stick together. Her time on the health and fitness committee in school made her skilled at treating injuries.

[ LIKES ]

Wood furniture, plaid-patterned items, making sweets

A platoon leader in the Japan Defense Force's Third Division. He possesses a strong sense of responsibility, and tends to get entrusted with general command. He's passionate when giving orders, and some officers are inspired by him. The look of his eyes is strong, but his vision is not, so he wears contact lenses.

[ LIKES ]

Effort, friendship, victory, bicycles, cream soda

A platoon leader in the Japan Defense Force's Third Division. With a straightforward and easygoing personality, she's well-liked by her subordinates. She appreciates a wide variety of men, describing Haruichi Izumo as the 'clean-cut type' and Aoi Kaguragi as the 'wild child' in her platoon.

[ LIKES ]

Handsome men (a wide variety), meat, royal milk tea

Vice-Captain of the Japan Defense Force's First Division. He takes on nearly all the First Division captain's duties in Narumi's stead. Despite being the Vice-Captain, he treats Captain Narumi as an equal, frequently reprimanding him for his irresponsible behavior—sometimes he even has to get physical.

[ LIKES ]

Order, cleanliness, silence, symmetrical things

A powerful platoon leader of the elite First Division. Driven by the desire to earn the recognition and attention of Narumi, who's only interested in strength, she constantly strives to better herself.

[ LIKES ]

Shopping, super-spicy food, adversity

A platoon leader in the Japan Defense Force's First Division. With his roaring battle cry, his fearless stance on the front lines is akin to a mad dog. With his comrades' support, he charges through the fray as a vanguard. Though short-tempered, he also has a strong sense of camaraderie.

[ LIKES ]

Taking the lead, being the first to bathe, popular anime movies, ramen

A reliable presence, calmly and quietly compensating for areas in which the active and impulsive Isao Shinomiya lacked. He quintessentially dislikes being in a position of power over others, but after being begged by Isao, he ended up as deputy director general.

[ LIKES ]

Quiet places, taiga (historical) dramas, tangerines

An orphan of disaster who was adopted into the Shinomiya family and became Kikoru's adoptive older sister. She serves as the captain of CLOZER.

[ LIKES ]

All living things (including humans), doughnuts