Kengo Eritate is a recurring character in the series 'Kamen Rider Kiva.' He is one of the users of the Ixa System, eventually becoming Kamen Rider Rising Ixa, an upgraded form of Kamen Rider Ixa. As a member of the Fangire Hunter organization, Kengo strives to protect humanity from the Fangire threat, often displaying a passionate and determined personality. Though sometimes hot-headed and impulsive, he is dedicated to his ideals and plays a crucial role in the fight against evil throughout the series.