Succubi are manifestations of the sin of destructive lust, and they are the most attractive of all demons-as befits their role in seducing mortals to fall to sin. The concept of gender is fluid to a succubus, as they can adopt countless humanoid forms of any gender to aid in their goals. Most succubi have a feminine true form (incubi, which usually have a masculine true form, are a different kind of demon), but regardless of gender, a lust demon is supernaturally beautiful or handsome, but with curving horns, bat wings, sharp claws, and a sinuous tail.