Daiji Igarashi is a central character in the tokusatsu series Kamen Rider Revice. He is the younger brother of protagonist Ikki Igarashi and plays a complex role as both ally and rival. As Kamen Rider Evil, Daiji struggles with his own inner demons and the influence of the Deadmans organization. His character arc explores themes of identity, family bonds, and redemption, making him a pivotal figure in the story's narrative development.