Nightbreed.

Diablo is a decadent recluse whose days are filled with loneliness and longing for the woman he cannot have. By night he becomes a man possessed, a sexual deviant who satisfies a torrent of eroticism by luring unsuspecting beauties to his castle in the sky. Finally, with the help of his accomplices, the personage of Diablo's twisted affection appears one fateful night. He is afraid she will see his dark side and never return. But she sees it and loves him more for it. This is the story of the night that brought them together. The night... and the fate.