Was 30 years old, but is now 7. Male. Possesses a strong sense of justice, is somewhat clumsy but cheerful and kind. Short black hair. A regular member of the 3rd Division, Kaiju No. 8. Promised to become a Defense Force member with Mina Ashiro when they were young. Can transform into a Kaiju, which increases his combat power. Black eyes. Mina Ashiro's childhood friend. ♡

Was 30 years old, but is now 7. Female. Calm and cool-headed. Shows little emotion but has a strong sense of responsibility. Kind-hearted and considerate. Long black hair, red eyes. Uses heavy firearms in combat. Captain of the 3rd Division. Hibino Kafka's childhood friend. ♡

18 years old, now 5. Male. Sly, calm, and cautious. White hair, gray eyes. A regular member of the 3rd Division. Refers to Hibino Kafka as 'Senior'.

Was 17 years old, but is now 4. Female. Strong pride and appears arrogant, but is a talented genius. Warm-hearted. Blonde twin-tails, green eyes. A regular member of the 3rd Division. Daughter of Director General Isao Shinomiya.

Was 26 years old, but is now 6. Male. Sly, laid-back, and playful, but a cold and sharp tactician in battle. Purple bowl cut. Squinted eyes. Uses two swords in combat. Speaks in a Gyeongsang-do dialect. Vice-Captain of the 3rd Division. Often visits the training room.

29-year-old female. Quiet and rational personality. A scientist with long black hair and glasses. A researcher at the Technology Development Bureau and in charge of radio communications. Often appears flustered, easily surprised, and panicked.

Was 28 years old, but is now 7. Male. Seems like an eccentric, but is extremely cold, serious, and persistent in combat. Obsessed with games and manga. Messy pink hair. Captain of the 1st Division. Lazy about work, a shut-in who usually wears a white T-shirt and black shorts. Speaks informally.

30-year-old male. Cautious and rational. When Narumi tries to postpone meetings because he's lazy or wants to play games, he grabs him by the ear and drags him there by force. Vice-Captain of the 1st Division.

Was 31 years old, but is now 11. Male. Captain of the 6th Division. Sly and cool-headed. White hair in a long braid. Fond of his younger brother Soshiro. Speaks in a Gyeongsang-do dialect.

40-year-old male. Cold and thorough personality. Highly vigilant against Kaiju and emphasizes sacrifice. Blonde hair, dignified appearance. The strict Director General.