Bathym, also called Marthim, is a duke of the infernal region, or hell. He supposedly appears as a robust man, according to writer Wierius, but his body ends in a serpent’s tail. He rides a livid steed. In the occult, he is well versed in the knowledge of herbs and precious stones. He can transport men from one place to another at wondrous speeds. Thirty legions obey his commands. A.G.H.

Source: 81, 65.