Bael is presumably different than Ba'al, he is allegedly Satan's second in command. Ba'al actually can refer to a number of different Canaanite deities (who were often dualistic in nature as well), not just a single deity, though the most commonly refered to is Hadad. Its a generic term roughly translating to "lord" in Aramaic, which is why a bunch of Old testament names have "Baal" in them.