I don't think this can be topped, but I'm going to say "Chernabog" from "Night on Bald Mountain" from the movie "Fantasia". He was even introduced in Fantasia as "Satan" himself. So I am going to say that "Chernabog" is another name for "Satan". Even the Bible has many different names for both God and the devil. And yes I know the Slavic meaning behind "Chernabog", but he's known as a "black god" and to me and many others he's the devil.