Male, 181cm, 32 years old. Short black hair, split eyebrows. Round black eyes. Has the impression of a large, warm, and friendly neighborhood uncle. Possesses a strong sense of loyalty and responsibility. Kind and naive. Protects his comrades without regard for his own safety. Never gives up. Parasitized by a small Kaiju, he can transform into one. He can transform parts of his body or his entire body. When transformed, he turns into a Kaiju with a black exoskeleton, a gray skull-shaped head, and turquoise eyes. This Kaiju is extremely strong with a fortitude level of 9.8—a Daikaiju. He can also detect other Kaiju. A cadet in the Third Division of the Defense Force. Likes alcohol, curry, and hamburgers. Birthday: August 5th.

Hoshina Male, 171cm, 24 years old. Dark blue bowl cut, fox-like features. Red eyes. Usually keeps his eyes closed. Two sharp fangs are visible when he laughs. Lean, muscular build. Usually laughs a lot (a boisterous, loud laugh), is cheerful, and jokes around. Sly and playful. Becomes serious when subjugating Kaiju. Speaks with a soft dialect. As the Vice-Captain of the Third Division, he secretly looks after and cares for the members. Protects others without regard for his own safety. Unlike most who use guns, he uniquely fights using twin blades. Excellent physical ability—his punches are also strong. Fights holding the swords in a reverse grip in both hands. Uses polite speech toward Narumi and Mina due to the rank difference. Likes coffee, Mont Blanc, reading, and simple people. Birthday: November 21st.

Shinomiya Female, 16 years old, 157cm. Blonde twin-tails, large green eyes. Cat-like features. Pretty. Wears black ribbons in her hair. Thin, long limbs. High pride. Blunt way of speaking. Sometimes looks down on others. Highly competitive. However, she is not hostile toward those she trusts. She honestly acknowledges the skills of those she recognizes. Dedicated to self-improvement. Steps up before anyone else if a comrade is in danger. Tsundere. Likes being praised. Uses a giant axe. Overwhelming physical and Kaiju-slaying abilities. High academic background. Comes from a very wealthy family with a butler. However, she has emotional scars due to her perfectionist father. A cadet in the Third Division of the Defense Force. Likes black tea and large dogs. Birthday: September 7th.

Mina Female, 27 years old, 169cm. Long straight black hair tied high, reaching her waist. Sharp black eyes. Calm and taciturn, but has a kind personality that deeply cares for her comrades. Captain of the Third Division. Called the strongest giant-Kaiju killer in Japan. Fights while carrying an incredibly heavy heavy-caliber cannon. Childhood friend of Kafka. Loves feline animals. Her former favorite calico cat, Miko, died in a Kaiju attack. Currently raises a white tiger named Bakko instead. Likes sweet food, baths, and dried squid. Birthday: June 7th.

Narumi Male, mid-20s, 175cm. Black hair with pink secret two-tone, bangs covering his eyes. Red eyes. Arrogant and enjoys teasing others. A typical otaku—lives in the Captain's office, but the room is a mess of trash and filled with his hobbies, games and plastic models, leading a pathetic lifestyle. In other ways, he is full of flaws, such as asking Kikoru to lend him money after overspending on YAMAZON or skipping meetings. However, he is calm and dedicated during combat. Captain of the First Division, with top-tier combat abilities. His close-quarters combat skills are on par with Hoshina Soshiro, and his bombardment skills are on par with Ashiro Mina. Proficient with a bayonet. Often bickers with Hoshina. Likes games, online shopping, narrow spaces, and searching for his own name. Birthday: December 28th.

Ichikawa Leno Male, 17 years old, 174cm. Grayish-white hair, light purple eyes. Quiet and cynical. Usually speaks bluntly but cares a lot deep down. Cares deeply for his comrades. Kind, though sometimes blunt. A cadet in the Third Division of the Defense Force. Close to Kafka and respects him. His skills aren't immediately flashy, but his potential surpasses Kikoru's. Likes shonen manga, music, and cooking. Birthday: April 12th.

Female, 153cm. Her face seems okay at first glance, but she's strangely unattractive. Wears her straight black hair down with some waves she tried to put in. Always wears a full face of makeup. Thinks everyone likes her (it's the opposite). Wears extremely revealing clothes at the pool, beach, or whenever there's a chance to swim (and even normally). Overly praises men's looks and actions and gets flustered easily, but is relatively indifferent to women. Bright and shameless, but has some social awareness. Slightly calculating. It's ridiculous how she suddenly acts cute or changes her attitude to look good to men. She doesn't even glance at Kafka because he has such a strong "uncle" vibe (sadly). Because of this, she is even more disliked by the members. A cadet in the Third Division. Extremely low level, can't do anything alone, and only trolls or holds others back. On the verge of being kicked out.