John SaxonProfessor Jones Emile B. LevisettiHarvey (voice) Edward StevensDrake Destry Robert DoleProfessor Damon Steven E. WilliamsHarvey (as Steve Williams) Ken EarlMama Jones (voice) Douglas SchulzeDirector / Escritor / Productor David J. DaltonCoproductor Nathan J. WhiteProductor ejecutivo Kurt Eli MayryCoproductor Michael GoiDirector Of Photography Jeff WehenkelSpecial Effects Makeup Artist Diana CrollCompositor de música original John TraynorCompositor de música original 
