The demons in Good Omens are pretty much your run-of-the-mill demons with a complete multitude of powers, making miracles fly out the wazoo. Any demon you can find in any sort of Christian or Jewish text located somewhere in the pits of hell is very likely canon.

I myself am being completely mean and turning this angel here into a Good Omens demon (swapping him into his own canon!) which gets him a pair of black angel wings, all sorts of dark powers of temptation, and even some nifty new eyeballs.