Mikaela Hyakuya 「百夜ミカエラ, Hyakuya Mikaera」 is the deuteragonist of the Owari no Seraph series. He was turned into a vampire against his will by Third Progenitor Krul Tepes. He, along with Yūichirō Hyakuya and a few others, possesses the seraph gene, which is relevant to the forbidden taboo and a focal point of the story Seraph of the End.