Gasper Vladi is one of the male protagonists of High School DxD. He is a cross-dressing male Dhamphir, a half-Vampire half-human, who has the ability to stop time and Rias' first Bishop. Because his powers were uncontrollable prior to the series, he was sealed in the Academy by Rias and was not seen again until Volume 4 of the light novels. He is a first-year student at Kuoh Academy, alongside Koneko and Ravel.