Guide › Anime › Kaiju No. 8 › Kaiju No. 8 characters
Kaiju No. 8 is set in a Japan where giant monsters called kaiju attack regularly and the Japan Defense Force fights them. Kafka Hibino, 32, cleans up kaiju remains for a living after giving up on joining the Defense Force alongside his childhood friend Mina Ashiro. An encounter with a small creature lets him turn into a powerful kaiju, nicknamed Kaiju No. 8, and he decides to try again while hiding his secret. The cast is organized by Defense Force divisions: Mina's Third Division, which Kafka joins with other recruits, and Gen Narumi's First Division. On the other side are intelligent kaiju such as Kaiju No. 9. This page covers 13 characters with their rank, weapons, Japanese voice actors and Brazilian Portuguese dub voices where confirmed.
The protagonist. He works for a company that cleans up kaiju remains and still dreams of joining the Defense Force. After a parasitic creature merges with him, he can turn into Kaiju No. 8, gaining superhuman strength, regeneration and the ability to sense other kaiju. He hides the secret while trying to become a soldier. Voiced by Katsuya Fukunishi in Japanese.
The 27-year-old captain of the Defense Force's Third Division and Kafka's childhood friend. She is one of Japan's strongest fighters, with exceptional aim and a handheld cannon able to bring down giant kaiju. The promise the two made as children is what pushes Kafka to try again. Voiced by Asami Seto in Japanese.
An 18-year-old who works with Kafka on kaiju cleanup and also wants to join the Defense Force. He is seen as a promising recruit and becomes Kafka's closest ally, helping him keep his secret. During training he develops a rivalry with Iharu Furuhashi. Voiced by Wataru Katō in Japanese.
A recruit who joins the Third Division with Kafka and Reno. She is a kaiju-slaying prodigy who fights with a giant axe and set the highest combat power ever recorded by a recruit. As the daughter of Director General Isao Shinomiya, she carries heavy expectations. Voiced by Fairouz Ai in Japanese.
Captain of the First Division and the strongest active combatant in the Defense Force. He uses special armor that predicts enemy movements and a large rifle with a bayonet. Eiji Hasegawa serves as his vice-captain, and the whole First Division looks to him in battle. He got his own short series, Narumi's Weekday, in 2026. Voiced by Kōki Uchiyama.
Vice-captain of the Third Division and Mina's right hand. A skilled swordsman, he is especially effective against smaller kaiju, though firearms are not his strength. He is the one who recommends Kafka get another chance as a cadet, and he suspects early on that the recruit is hiding something. Voiced by Kengo Kawanishi.
Director General of the Defense Force and Kikoru's father. He is a historically powerful fighter who uses a high-level special suit. Stern and demanding, he is dedicated to preparing his daughter for combat. His presence weighs on the whole organization and on Kikoru's choices. Voiced by Tesshō Genda.
A Third Division recruit from the same intake as Kafka, Reno and Kikoru. Competitive and full of energy, he shares a platoon with Reno and builds a rivalry with him during training that pushes both to improve. He is one of the loudest voices among the rookies. Voiced by Yūki Shin.
A new Third Division recruit and heir to the Izumo family, whose company Izumo Tech develops equipment for the Defense Force. He understands the technical side of the weapons and suits soldiers use. He serves in Tae Nakanoshima's platoon alongside Aoi. Voiced by Keisuke Kōmoto.
Aoi Kaguragi is one of the newer members of the Third Division. Before joining the Defense Force, the organisation that fights kaiju in this story, he was an officer in the Japan Ground Self-Defense Force. He serves in Tae Nakanoshima's platoon alongside Haruichi Izumo. Japanese voice: Shunsuke Takeuchi; English dub: Jonah Scott.
The Third Division's lead operator. From the command room she relays information to officers in the field and monitors the output of their combat suits, and her team can release limiters so soldiers can use more power when needed. She is central to operations without going to the front line. Voiced by Ayaka Senbongi.
Vice-captain of the First Division and Gen Narumi's right hand. Disciplined and no-nonsense, he keeps the division organized while the captain focuses on fighting. At about seven feet tall, he stands out in every scene. He keeps the division's routine in order. Voiced by Hiroki Yasumoto.
An intelligent humanoid kaiju introduced as the series' main antagonist. It orchestrates attacks on the Defense Force and can create other kaiju, which makes it far more dangerous than ordinary monsters. Its goal is a world where kaiju can thrive. Voiced by Hiroyuki Yoshino in Japanese.
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