Sabato Kiryuu

"“No one is innocent. No human, no demon, no one.” —Sabato Kiryuu" Sabato Kiryuu (桐生 佐馬斗) is the infamous "Devil's Doctor" (魔科医) of Japan, known for his extreme experiments and operations on his patients across the country and becomes wanted for his intellect and dangerous acts. He first appeared as the main villain of the movie Senryuukaku vs. Mudou.

Trivia

 * Demon Kakka's voice role as Kiryuu is his first role in an anime.