Russell HortonMr. Milquetoast Patricia BensonMrs. Milquetoast James RebhornDrunk Businessman Frank WelkerCat / Troll (Voice) Laura WarnerCigarette Girl / Casino Girl / Bridge Driver (uncredited) Daniel RodgersTroll (uncredited) Tim ParatiAttendant (uncredited) Dino De LaurentiisProducent Martha De LaurentiisProducent Milton SubotskyCo-Producer Mentor HuebnerProduction Design Giorgio PostiglioneProduction Design Jack CardiffDirector Of Photography Clifford CaponeCostume Design Glenn Randall Jr.Second Unit Director Kuki López RoderoFirst Assistant Director Alan SilvestriOriginalmusikkompositör Carlo RambaldiCreature Design 
