Incubus

In mythical legend, the incubus was an impossibly handsome demon who laid with his victims at night and tempted them with sex. Whilst they most often bedded women, they would gladly sleep with men, too.

This was one of the many reasons medievals discouraged homosexual thought, for fear an incubus would pray on men who entertained lascivious fantasies of romping with the muscular village blacksmith. Like that would be a bad thing. I found this delightful incubus at Daventry Blue.