Kazari is a major antagonist in the 'Kamen Rider OOO' series. He is one of the Greeed, ancient monsters driven by desire, and represents the feline-based Greeed. Kazari is cunning, manipulative, and often schemes to increase his own power, frequently clashing with the main protagonist, Eiji Hino. His ability to adapt and regenerate makes him a formidable foe, and his sly personality often pits him against both allies and enemies in his pursuit of ultimate desire.