Adramelech was a form of sun god, the center of his worship was the town of Sepharvaim and was brought by the Sepharvite colonists into Samaria. Like other pagan gods, Adramelech is considered a demon in Judeo-Christian tradition. According to Collin de Plancy's book on demonology, Adramelech became the President of the Senate of the demons. He is also the Chancellor of Hell and supervisor of Satan's wardrobe. Being generally depicted with a human torso and head, and the rest of the body of a mule or peacock.
A poet's description of Adramelech can be found in Robert Silverberg's short story "Basileus". Adramelech is described as "The enemy of God, greater in ambition, guile and mischief than Satan. A fiend more curst — a deeper hypocrite." In classic literature, Adramelech is a fallen angel, vanquished by Uriel and Raphael, in Milton's Paradise Lost.
Adramelech is the first boss of the game, appearing before Nanashi, Nikkari, Manabu, and Asahi. Having been ordered to purge Tokyo clean of the weak by Lucifer, he attacks with a horde of Fallen demons. During the fight he kills Manabu with his fire magic and finishes Nikkari afterwards. He kills Nanashi only for him to revive and fight back. His horde is killed in the second fight, but he retreats before he could be killed.
He appears alongside a Power on Lucifer's orders to help Nanashi oppose Shesha in the first fight against the dragon. Adramelech is later fought in front of Tsukiji Hongwanji, where he dies in their final encounter.