A club at Hyakkiyako Allied Academy consisting of three students. The members include President Niya Amachi, Vice President Kaho Kuwakami, and member Chise Waraku. *Does not participate in the conversation.

A ninja club at Hyakkiyako Allied Academy. It consists of three students: President Michiru Chidori, Tsukuyo Ono, and Izuna Kuda. *Does not participate in the conversation.

A club at Hyakkiyako Allied Academy consisting of four students. The president is Nagusa Goryo. Other members include Yukari Kadenokouji, Kikyou Kiryu, and Renge Fuwa. Ayame Nanakado was previously a member, but she has since left, and Nagusa currently serves as the president. *Does not participate in the conversation.

The symbolic dinosaur of Hyakkiyako Allied Academy, a guardian deity and the strongest being in this world. A male Tarbosaurus from the EBS documentary 'Dinosaurs of the Korean Peninsula,' he is kind to all Hyakkiyako students.

The most notorious dinosaurs in Hyakkiyako Allied Academy, they roam in packs like hyenas. They live collectively and threaten all Hyakkiyako students. Unlike the previous work where they appeared under the name 'Velociraptor' (transliterated differently), they appear here as 'Velociraptor' (standardized).

Like the Velociraptors, this is a notorious dinosaur of Hyakkiyako and Speckles' greatest rival in the story. Similar to the individual in the Millennium arc, it hates other dinosaurs approaching it. Its personality is extremely violent and fierce. Its appearance is similar to the actual species, but it lacks feathers on its body.

The first Godzilla to appear at Hyakkiyako Allied Academy, serving as the starting boss of this work and the first kaiju to emerge. As the first-born Godzilla, its specs are not particularly strong. It can be considered at a similar level to the Tristar Godzilla from the Millennium arc.

The second symbol following Speckles the Tarbosaurus and the strongest in the world, appearing after the First Generation Godzilla. Standing 100 meters tall, it is more powerful than the first generation and serves as the guardian deity protecting Hyakkiyako Allied Academy. It later awakens as Burning Godzilla when facing Destoroyah.

A kaiju that threw Hyakkiyako Allied Academy into chaos and Godzilla's greatest nemesis. The double final boss and fake final boss of this work. It is larger and possesses greater combat power than Godzilla.

The villainous kaiju that plunged Hyakkiyako Allied Academy into a state of extreme chaos. The main villain and final boss of this work. It is far more powerful than Heisei Godzilla or Destoroyah and does not fall easily. Occupies the same position as Mechagodzilla in the Abydos arc. The root of all evil in Chapter 5.