Takato Nobori, known as Kamen Rider Dark Kiva, is a prominent character in the series Kamen Rider Kiva. As the son of the Fangire King, Takato inherits the Dark Kiva powers and serves as both an antagonist and a tragic figure. He struggles with his royal duties and personal desires, leading to complex relationships with other characters, especially his brother Wataru. His role is pivotal in the storyline, influencing the fate of both the Fangire and human worlds.