The short answer to that question is No. Satan is a Christian construct, and so he’s outside of the spectrum of most Pagan belief systems, including Wicca. If someone tells you they’re a Satanist, then they’re a Satanist, not a Wiccan.
It’s also important to keep in mind that most people who self-identify as Satanists do not, in fact, worship Satan as a deity, but instead embrace a concept of individualism and ego. Many Satanists are in fact atheists, particularly among those who follow LaVeyan Satanism. Others consider themselves hedonists. Regardless of your feelings about Old Scratch, the Devil, Beelzebub, or whatever you want to call him, Satan generally doesn’t appear in most modern Pagan spiritual systems.
Many evangelical branches of Christianity warn members to avoid any sort of Pagan belief path. After all, they caution you, worship of any being other than the Christian god is tantamount to devil-worship. Focus On the Family, a fundamentalist Christian group, warns that if you’re looking at the positive aspects of Paganism, it’s because you’ve been tricked by the devil. They say, “Many Wiccans say that Wicca is harmless and nature-loving—that it has nothing to do with evil, Satanism and dark forces. But that is exactly what Satan wants them to believe! Intent on deceit, “Satan himself masquerades as an angel of light,” says Paul. “It is not surprising, then, if his servants masquerade as servants of righteousness.” Paul says that if they don’t turn toward God and repent, “their end will be what their actions deserve” (2 Corinthians 11:14-15).”
The Horned God Archetype
As to the “guy wearing horns,” there are a number of Pagan deities who are often represented as wearing horns or antlers. Cernunnos, for instance, is the Celtic god of the forests. He is associated with lust and fertility and the hunt – none of which sound terribly evil, do they? There’s also Pan, who looks a bit like a goat and comes to us from the ancient Greeks. He invented a musical instrument which ended up being named for him–the panpipe. Again, not too threatening or scary at all. If you happen to stumble across an image of Baphomet, he’s another goat-headed deity and happens to reflect many of the theories and ideas found in 19th-century occultism.
In many Wiccan traditions, the archetype of the Horned God represents the masculine aspect of the divine, often as a consort to a Mother Goddess. In Margaret Murray’s God of the Witches, she attempts to prove that there was an all-encompassing, pan-European cult that honors this archetype, but there is simply no academic or archaeological evidence to support this. However, there are indeed various individual horned gods that pop up in a number of ancient cultures.
Horned Gods and the Church
So, if our Pagan ancestors were out frolicking in the forests and honouring horned deities like Pan and Cernunnos, how did the idea of devil worship come to be associated with these gods?
Well, it’s an answer that’s fairly simple, and yet complex at the same time. In the Bible, there are passages specifically addressing deities who wear horns. The Book of Revelation, in particular, speaks to the appearance of demons, wearing horns on their heads. These may have been inspired by the appearance of ancient, pre-Christian gods, including Baal and Moloch.