original theory: succubi are always women, incubi are always men
facts: in fact succubus comes from the latin word “succubare” which means “to lie under” and incubus comes from the latin word “incubare” which means “to lie on”
new improved theory: incubi are always tops and succubi are always bottoms. gender doesn’t matter at all.
addendum: if the sex demon in question is versatile, they’re a concubus, from the latin for ‘to lie with/beside’.
Yes, but ALSO there is a theory that the incubus and succubus are the same creature who shapeshift in order to accomplish their aims.
As the succubus, they have sex with a man to obtain his sperm, and then, as incubus, pass that human sperm on to a woman to impregnate her.
But ya know. That’s sort of the traditional description but I’m damn sure they don’t care that much about gender essentialism and would happily bang whatever type of jizz-producing person they can find to get that semen into whatever type of womb-having person.
For more weird lore about demon sex, I recommend “Demoniality” by Ludovico Maria Sinistrari, or “Eros and Evil” by Robert Masters.
Church of the Morningstar 