Bathin

The eighteenth demon named in the Goetia, Bathin appears in a number of texts, including Rudd's Treatise on Angel Magic, Scot's Discoverie of Witchcraft, and Wierus's  Pseudomonarcia Daemonum, presents slightly different spellings of both of these names.  Scot gives an alternate name of Mathim for this demon.  Scot's source material, the Pseudomonarchia Daemonum, presents slgihtly different spellings of both of these names.  According to the Pseudomonarchia, the name of this demon is Bathym, and the alternate name is Marthim.  Both texts agree that this demon is a great and strong duke ruling over thirty legions of infernal spirits.  He is said to appear as a very storong man with a serpent's tail.  He comes riding a pale horse, much like the specter of Death in the biblical Book of Revelation.  He has the power to transport people suddenly from place to place.  In addition, he understands the virtues of hers and special stones, and will presumably impart this knowledge to those that call him up.  He rules over a total of thirty legions of infernal spirits.  According to the Goetia of Dr. Rudd,  the angel Caliel has the power to command and constrain this demon.  See also GOETIA, RUDD, SCOT, WIERUS.
THE DICTIONARY OF DEMONS, REVISED AND EXPANDED, M. BELANGER (2021)