Baal is a Christian demon who was ranked as the first and principal king in Hell, ruling over the East. According to some authors Baal is a Duke of Hell, with 66 legions of demons under his command. The term "Baal" is used in various ways in the Old Testament, with the usual meaning of master, or owner. It came to sometimes mean the local pagan god of a particular people, and at the same time all of the idols of the land. It is also found in several places in the plural "Baalim", or Baals (Judges 2:11, 10:10). There were many variations, such as the sun god, the god of fertility, and Beelzebub, or the "lord of flies".
During the English Puritan period, Baal was either compared to Satan or considered his main assistant. According to Francis Barrett, he has the power to make those who invoke him invisible, and to some other demonologists his power is stronger in October. According to some sources, he can make people wise, speaks hoarsely, and carries ashes in his pocket.While his Semitic predecessor was depicted as a horned man or a bull, the demon Baal was in grimoire tradition said to appear in the forms of a man, cat, toad, or combinations thereof. An illustration in Collin de Plancy's 1818 book Dictionnaire Infernal rather curiously placed the heads of the three creatures onto a set of spider legs.
- "Baalists" or "Baalites" means worshippers of Baal as they are called, and they praised his name and worshipped him, thus given the name to the Baal "religion", "Baalism".