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 / Scénariste / Producteur David J. DaltonCo-Producer Nathan J. WhiteExecutive Producer Kurt Eli MayryCo-Producer Michael GoiDirector Of Photography Jeff WehenkelSpecial Effects Makeup Artist Diana CrollOriginal Music Composer John TraynorOriginal Music Composer 
