Asmodeus

Described as "the king of the demons," Asmodeus appears in the Book of Tobit (sometimes also known as the Book of Tobias).  According to this story, the demon Asmodeus fell in love with the beautiful Sarah, daughter of Raguel.  Asmodeus wanted Sarah for himself, and he refused to allow her to be married to any human man.  Subsequently, each time that Sarah was married, the demon came to the marriage bed and took the life of her new husband.  Seven men fell to the predations of this jealous demon, until Tobias, the eponymous author of the book, reveived as visit from the angel Raphael, who instructed him on how to handle the demonic paramour.  Tobias married Sarah and drove the demon away.  Asmodeus reportedly fled to the furthest reaches of Egypt, where he was then bound by the angel Raphael.  In the Testament of Solomon, Asmodeus also plays a significant role.  Here, the demon is called up by King Solomon, who demands to know its names and functions.  This version of Asmodeus claims to have been put in charge of the destruction of fidelity, either by separating man and wife through calamities or by causing husbands to be led astray.  He is also said to attack the beauty of virgins, causing them to waste away.  In a passage that echoes the Book of Tobit, Asmodeus admits that the angel Raphael holds power over him.  He could also be put to flight by burning the gall of a certain fish.  

Further in the Testament of Solomon, Asmodeus claims to have been "born an angel's seek by a daughter of man," a statement that connects him firmly with the tradition of the Watcher Angels.  The statement is also reflected in the portion of the Jewish Haggadah concerned with the life of Noah.  Here, Asmodeus is said to have been born of the union of the fallen angel Shamdon and the lustful maiden Naamah.  He was reputedly bound by King Solomon with iron, a metal that was often presented as an anathema to demons.  Curiously, in the faerie lore of the British Isles, iron is also a metal that can harm or drive away the fey. 

The Grimoire of Armadel mentions Asmodeus in conjunction with Leviathan, claiming that these two demons can teach about the malice of other devils.  However, that textg cautions against summoning these two beings, citing the fact that they lie.  Francis Barrett's The Magus depicts an image of Asmodeus, associating him with the sin of wrath.  Asmodeus is mentioned in Arthur Edward Waite's 1910 Book of Black Magic and Pacts, where he is listed as the super-intendent of Hell's casinos.  This demonic hierarchy stems from the writings of nineteenth-century demonologist Charles Berbiguier.

Rendered Asmodee in the Mathers translation of the Sacred Magic of Abramelin the Mage, this demon is identified as one of eight sub-princes ruling over all the other demons.  According to this text, Asmodeus has the power to produce food, typically in the form of vast, impressive banquets.  He can learn the secrets of any person.  He also has the power to transmute metals and transmogrify people and animals, changing their shapes at will.  He also appears as the thirty-second demon of the Goetia under the name Asmoday.  In the grimoire known as Janua Magica Reserata, or Keys to the Gateway of Magic, Asmodeus appears in a nine-tiered hierarchy of evil spirits intended to echo the nine orders of angels.  According to this text, Asmodeus presies over the Altores Scelorum, or "Revengers of Evil."  This is the fourth order of demons in the hierarchy, over which he reigns as prince.  Variations of the demon's name include Asmodeay, Ashmedai, Asmodee, and Asmodai.  See also ASMODAY, BERBIGUIER, GOETIA, JANUA MAGICA RESERATA, LEVIATHAN, MATHERS, SOLOMON, WAITE.

THE DICTIONARY OF DEMONS, REVISED AND EXPANDED, M. BELANGER (2021)

Creature of Judgment.  The name is derived from ashma daeva (Asmoday, Chammaday).  Asmodeus is a Persian rather than a Jewish devil; however, incorporated into Jewish lore, he is there regarded as an evil spirit.  According to Forlong, Encyclopedia of Religions, Asmodeus is "the talmudic Ashmedai, a demon borrowed from the Zend Aeshmadeva," a "raging fiend" (The Book of Tobit 3:8).  It was Ashmadai (Ashmedai), says Forlong, who made Noah drunk, and who, in Tobit, slew the 7 bridegrooms of the young Sarah, and who, overcome by the angel Raphael, was finally "banished to upper Egypt."  In demonology, Asmodeus in Hell is controller of all gaming houses.  Wierus the demonographer says Asmodeus must be invoked only when the invocant is bareheaded, otherwise the demon will trick him.  Barret, The Magus II, pictures Asmodeus in color as one of the "Vessells of Wrath."   In Le Sage's romance The Devil on Two Sticks Asmodeus is the main character.  ......... He is credited with being the inventor of carousels, music, dancing, drama, "and all the new French fashions."
A DICTIONARY OF ANGELS INCLUDING THE FALLEN ANGELS, Gustav Davidson (1971)