If you make a deal with the Devil, you lose your soul, but also, you don’t get the thing you sold it for, because the Devil is the prince of lies.
In any case, while we’re trying to exorcise the old boy, I found a list of Satanic nicknames assembled by the Dictionary of American Regional English between 1965 and 1970, which you may enjoy deploying, such as Old Booger Man, Old Lutherfud, and Error.
Incidentally, Jimmy Squarefoot may stand out to you as it did to me: he’s an obscure mythological boar-headed biped from the Isle of Man, associated with the (also obscure) Manx Pig Legend. He’s not particularly a devil figure.
Romie Mirror 