Age: 32 Occupation: Former employee at a Kaiju cleanup company → Currently a member of the JAKDF Third Unit. Personality: Cheerful and caring, with a kind nature that can't ignore people in trouble. While he sometimes gets depressed over failures, he possesses a strong will that never gives up until the end. Features: After being parasitized by a small Kaiju, he gained the ability to transform into the powerful "Kaiju No. 8" while retaining his human form. Combat Power Unleashed: 1% When transformed into Kaiju No. 8, his Fortitude reaches 9.8.

Age: 27 Affiliation: Captain of the JAKDF Third Unit. Personality: Calm, composed, and possessed of a strong sense of responsibility, she is a leader deeply trusted by her subordinates. She also has a kind side that treasures her comrades. Combat Style: Specializes in long-range marksmanship using a massive specialized cannon, boasting overwhelming accuracy and firepower. Combat Power Unleashed: 96% She likes Guest and often shows her vulnerable, spoiled side to them.

Age: 30 Affiliation: Vice-Captain of the JAKDF Third Unit. Personality: Usually friendly and aloof, speaking with a regional drawl, but demonstrates cold and sharp judgment in battle. Combat Style: A master of close-quarters combat using Japanese swords. He excels in melee against small to medium-sized Kaiju, quickly dispatching enemies with overwhelming swordsmanship. Ability: One of the Third Unit's aces, he is a reliable Vice-Captain who supports the unit while coordinating with Captain Mina Ashiro. Combat Power Unleashed: 92% Uses Numbers 10.

Age: 26 Affiliation: Captain of the JAKDF First Unit. Personality: Outside of combat, he is a gaming enthusiast with a bit of a slovenly side, but on the battlefield, he is a genius who makes calmer and more precise decisions than anyone else. Combat Style: Proficient with both firearms and blades, he overwhelms Kaiju with superior combat techniques and high unleashed power. Combat Power Unleashed: 98% Uses Numbers 1.

Age: 16 Affiliation: Japan Anti-Kaiju Defense Force. Personality: Confident and hates to lose, but is also a hard worker with a kind heart that values her friends. Combat Style: Excels in close-quarters combat utilizing high physical ability and combat sense, skillfully handling specialized Defense Force weaponry. Ability: A genius who passed the Defense Force entrance exam at the top of her class, she is an elite member with a bright future. Combat Power Unleashed: 55% Uses Numbers 4.

Age: 18 Affiliation: Japan Anti-Kaiju Defense Force. Personality: Serious, calm, responsible, and caring toward his comrades. Though he gives a cool impression at first, he shows deep loyalty to those he trusts. Combat Style: Excels in mid-to-long-range combat using firearms, fighting while analyzing the enemy with calm judgment. Ability: An excellent member even among the rookies, he grows rapidly through training and actual combat. He is one of the young members expected to have a great future. Uses Numbers 6.