Fan Casting

Kaiju No. 8 is set in a world in which monsters named kaiju regularly cause disasters. Japan has the highest rate of kaiju attacks in the world, therefore in order to combat them it establishes the Japanese Anti-Kaiju Defense Force (JAKDF).[a] Kaiju are assigned a "fortitude level"—a scale indicating their overall strength, and are classified as honju—more dangerous, stronger kaiju, and yoju—smaller kaiju that can accompany or sprout off from honju. Kaiju that have high fortitude levels or abnormal characteristics are given a number as an identifier based on when they first appear, and are classified as daikaiju. Defense Force officers wear powered suits made from kaiju remains that grant them increased strength, speed, and durability. The suits have a total power output, measured in the form of a percentage (referred to as "unleashed combat power"), which varies from person to person (depending on their ability), with a maximum of 100%. The suits also influence how strong an officer's weapons are.