Bael is one of many Judeo-Christian demons that originated as a pagan god. Or, more accurately, many pagan gods. The Semitic word Ba’al, from which Bael’s name is derived, means “lord,” and has been associated with several ancient Semitic pagan gods, including the Phoenician god El, and the Judaic god Yahweh (Yeah, as in the Christian god Yahweh. Oh, the irony). Because of his multitude of associations, you could say that Bael is a demon of all trades, though he is especially known for giving people the gift of invisibility.