Amaimon  

Earth King, アマイモン

Amaimon, also known as the "Earth King," is a demon prince from Gehenna who is said to be Satan's second son. Unlike his father and elder brother Mephisto, Amaimon had little interest in Rin after their first encounter. He has human-like features with dark green hair that is lightly colored at the tips, cross bone buttons on a jacket he wears, and a long sleeved green shirt under it which is torn at the ends. Despite appearing calm and confident, Amaimon can become very angry and annoyed when someone interrupts his fun. He enjoys playing around and doesn't take fighting strong opponents seriously, indicating that he is highly skilled in combat.