The incubus is such a fascinating topic because it straddles the line between folklore, mythology, and religious demonology. Depending on who you ask, you'll get wildly different answers, and that's part of what makes it so intriguing to me. In medieval European lore, incubi were absolutely classified as demons—malevolent supernatural beings that preyed on sleeping women, often associated with nightmares and even the birth of cursed children. Texts like the 'Malleus Maleficarum' painted them as outright servants of the devil, blending Christian fears with older superstitions. But if you dig into pre-Christian myths, you start seeing parallels with entities like the Germanic 'mara' or the Slavic 'nocnitsa,' which were more ambiguous—supernatural, yes, but not necessarily hellish.
What really grabs me is how the incubus evolved across cultures. In some traditions, they’re purely malevolent, while in others, they’re almost tragic figures—seductive but bound by their own nature. Modern fantasy and horror, like 'Supernatural' or 'The Witcher,' often play with this duality, making them either outright villains or morally complex antiheroes. Personally, I lean into the idea that they’re both: demonic by Christian framing, but mythic in the broader sense, rooted in humanity’s oldest fears about desire, loss of control, and the unknown. It’s that tension between terror and allure that keeps them relevant in stories today.