Satan (サタン)

Satan is the main antagonist and the lord of demons who wishes take control of the humans' world, Assiah. While father to Mephisto Pheles, Amaimon, and Lucifer, he is also fathered Rin and Yukio Okumura through their human mother. When Rin awakes his demonic powers inherited from his father, Satan takes control of Rin's guardian, Shiro Fujimoto, in order to encounter and use his son to destroy Assiah. However, Fujimoto's suicide causes him to lose contact with Rin.[ch. 1] In the anime series, Satan once again tries to achieve his plans by using Yukio as his vessel, but Yukio is freed by Rin. He really seemed to care about Rin and Yukio's mother. He is voiced by Keiji Fujiwara in Japanese and Kirk Thornton in English, while in VOMIC he is voiced by Atsushi Imaruoka.