 Director John Milius (qv) says in the documentary  _Frazetta: Painting with Fire (2003)_ (qv) that more than a few  scenes were dedicated to legendary artist Frank Frazetta (qv) and  based on his artwork, including the scene in the orgy chamber,  Thulsa Doom turning into a snake, a girl chained to a pillar and a  climactic fight scene.