Amaimon

Japanese name:	アマイモン
Nickname:	Earth King

Amaimon is supposedly the second son of Satan and another Demon Prince of Gehenna. Unlike his father and elder brother Mephisto, Amaimon had little interest in Rin after their first encounter. Fitting with his title, Amaimon has vast control over the land as he was able to start an earthquake while being pinned down by Rin. He has been shown to take odd interests in things as he wished to tour Japan upon arriving instead of seeing Rin. One of the few moments where he is serious is when he is being laughed at. He also mentioned he has a cousin wo has an interest in the occult and even goes on to say that she would be happy if he brought her a human eye. His name is derived from the demon Amaymon.

Voiced by: Tetsuya Kakihara

Wikipedia