Misotheism seems fine to me (or possibly maltheism): Wonder Woman's certain that the Greek Gods exists, but believes they aren't worthy of worship. That's a fairly rare situation in the real world, but not in the DCU where various deities frequently manifest themselves.

(Actually, Satanism might be a better term if you're looking for something more mainstream, except that 99% of people don't actually know the proper meaning of Satanism as used by its followers.)