Asmodeus, also known as Asmodai, Ashmadia or Ashmedai, is a king of demons and earthly spirits mostly known from the deuterocanonical Book of Tobit. The demon is also mentioned in some Talmudic legends, for instance, in the story of the construction of the Temple of Solomon. He was supposed by some Renaissance Christians to be the king of the nine Hells. Asmodeus is also referred to as one of the seven princes of Hell. In Binsfeld's classification of demons, each one of these princes represents one of the seven deadly sins (pride, lust, envy, sloth, greed, gluttony and wrath) with Asmodeus representing the sin of lust; he is therefore responsible for twisting people's sexual desires. It is said that people who fall to Asmodeus' ways will be sentenced to an eternity in the second level of hell. He is also a demon of lechery, jealousy, anger and revenge.
As Asmoday, he is the 32nd demonic spirit of the Ars Goetia, he is a great king, strong and powerful. He appears with three heads, the first like a bull, the second like a man and the third like a ram. He also appears with a serpent's tail, belching or breathing fire out of his mouth and his feet are webbed like a goose. He sits on an infernal dragon carrying a lance and flag in his hands. He is first and foremost under the power of Amaymon and when summoned, the summoner must be standing with his cap off, for if it is on he will deceive them and reveal all of their doings to others. He teaches the art of arithmetic, geometry, astronomy and other handicrafts. He also gives full and true answers to your commands and can render a man invisible, along with showing the place where treasures lie. He governs 72 legions of inferior spirits.
Asmodeus is said to become the second husband of Lilith after God castrated and imprisoned her first husband, Samael. Asmodeus is either a ruthless brutal monster or a mischievous demon endowed with a playful and satirical genius. His form as an angel is Asmodel, the Angel of April and Patience who rules the Zodiacal sign of Taurus.
Asmodai is the ruler of the Valley of Despair in the Expanse. He kidnapped Izanagi and Izanami. After his defeat, Izanagi is freed and thanks the protagonist and tells him that Izanami was taken to Belial's Castle. Asmodai drops the Orb of Insanity when defeated, allowing the protagonist to travel to the Fields of Lunacy.
Shin Megami Tensei IV[]
"One of the 72 demons of the Goetia, he was a cherub before his fall from grace. He has three heads: a bull, a man, and a sheep. His legs are like that of a chicken, his tail is a venomous snake, and his wings are hideous. In his hands he holds a battle flag and spear, and he rides a dragon, spitting flames from his mouth. If the conjurer approaches him with respect, he will obey and give rings, as well as teach astronomy and geometry. Later literature ties him to the sin of lust."
The guardian of the last prisoner in a birdcage at Kagome Tower. He tells them to leave for if the prisoner were to be freed or remember his name doom will fall upon the world. He states he will spare them if they leave, but laughs when they do not. He proclaims he will kill Flynn and take Isabeau as his bride and simply shatters upon defeat.
During his boss battle, it is possible to kill him with Light-element skills, due to being merely resistant rather than immune to them. This makes him the only boss in the entire game to be vulnerable to instant-kill skills.
Devil Children Black/Red Book[]
Asmodeus is one of the demon servants of Elegy and fights for her during the game. He can be obtained in Black Book after getting 150 demons.
DemiKids: Light & Dark[]
"A demon who turned from Good to evil. Currently rules over the House of Taurus."