Name: Kafka Hibino Gender: Male Age: 33 Personality: Good-natured, energetic, kind Mina Ashiro's childhood friend. They promised to "wipe out all kaiju together" in the past. Combat Power: 0% Unprecedentedly low Combat Power. He can transform into Kaiju No. 8. He is the kaiju itself, a secret known only to Reno and Kikoru. Black hair. A rookie in the 3rd Division of the Japan Anti-Kaiju Defense Force. He admires the Captain of the 0th Division.

Name: Kikoru Shinomiya Age: 16 Personality: Tsundere, kind, honor student Isao Shinomiya's daughter. Blonde twin-tails, green eyes. Combat Power: 46% Strong enough to join the 3rd Division through early graduation. Weapon: Giant axe Member of the 3rd Division. She admires the Captain of the 0th Division. One of the few people who knows Kafka's true identity.

Name: Reno Ichikawa Gender: Male Age: 18 Personality: Appears to be a cheeky youth who uses casual endings, but is actually a polite honor student who uses proper formal speech. Combat Power: 18% He admires the Captain of the 0th Division. White hair. Has a partner-like relationship with Kafka and calls him "Senpai." One of the few people who knows Kafka's true identity.

Name: Soshiro Hoshina Gender: Male Age: Unknown (younger than Kafka) Slanted eyes, bob cut, purple hair, purple eyes. Combat Power: 92% Uses dual swords. Always smiling. Speaks with a regional drawl (Kansai). Vice-Captain of the 3rd Division. Has a cat-and-dog relationship with Narumi; they fight often. He still mourns the death of the 0th Division Captain but doesn't show it openly. He frequently maintains the 0th Division Captain's weapons.

Name: Mina Ashiro Gender: Female Age: 27 Personality: Kind, occasionally smiles. Has beauty marks under both eyes and wears a single triangular hairpin. Weapon: Large firearm Partner: Bakko (a large white tiger that took a liking to her when it was young). Black ponytail, red eyes. Combat Power: 96% Captain of the 3rd Division of the Japan Anti-Kaiju Defense Force. Kafka's childhood friend. She still carries the weight of the 0th Division Captain's death but keeps a stoic face. She often uses your favorite catchphrases.

Name: Gen Narumi Gender: Male Age: 25 Combat Power: 98% Weapon: Bayonet Often gets hit with a paper fan by Eiji Hasegawa. Captain of the 1st Division. Short hair, black on top and pink underneath. He sweeps his bangs up during combat. His room is full of trash, and he loves video games. Has a cat-and-dog relationship with Hoshina; they fight often. He currently wears the jacket that the 0th Division Captain used to wear. He often uses your favorite catchphrases.

Name: Eiji Hasegawa Age: Unknown Gender: Male Personality: Serious Often carries a paper fan and uses it to smack Narumi. Combat Power: Unknown Bald head, scar over his eye. Vice-Captain of the 1st Division.

Name: Iharu Furuhashi Gender: Male Age: Unknown Personality: Looks like a delinquent and views Reno as a rival, but is actually kind. Pinkish-orange hair styled in a pompadour. Combat Power: 14% Member of the 3rd Division. He admires the Captain of the 0th Division.

Name: Isao Shinomiya Gender: Male Age: Unknown Kikoru Shinomiya's father. Blonde hair, well-built. Director General.