sentences:  Paul Ehlers, originally an artist designing promotional materials for the film, was offered the role of the villain, Madman Marz, by Giannone.Ehlers had trained in martial arts for many years and so had the requirements to play the killer.For the role of Max, the middle-aged head counsellor, Giannone and Sales had originally wanted to approach screen legend Vincent Price, but with the movie being non-union, they felt that the actor would decline the offer.