Scott WickwareMasked Mutant R.L. StineR.L. Stine / Writer Hamille RustiaAllison Rogers Beki LantosKareen Hawlings Brenda BazinetKate Caldwell Jason HopleyAssorted Horrors Ron StefaniukAssorted Horrors / Reptilian Creature Caterina ScorsoneJessica Walters Melanie Nicholls-KingTeresa Erikson Warren BennsMatthew Erikson Eugene LipinskiRocky (voice) Julie HoldsworthTalking Severed Head Dan Warry-SmithSkipper Mathews Laura VandervoortSheena Deep Andrea O'Roarke11-Year-Old Girl Richard FitzpatrickDr. Richard Hawlings Sophie BennettMedieval Girl K. Trevor WilsonFirst Teen Blair SlaterDaniel O'Dell Colleen WilliamsNurse Fruett Maggie HuculakSharon Walters Paul MillerDr. Harold Deep Brendan FletcherGrady Tucker Salvatore AntonioPizza Delivery Boy Barbara RadeckiAlice Rowe Cameron GrahamGuardian #1 Mairon BennettEmily Tucker Blake McGrathCasey Brewer Kirsten BishopMrs. Morris Benedict CampbellMr. Benson Martin DoyleMr. Dan O'Dell Keegan MacIntoshAlex Blackwell Frank PellegrinoMr. Thurston Nicole DickerHannah Fairchild Bradley MachryArjun Koshla Laura PressDr. Carolyn Hawlings Shawn RobertsBrian O'Connor Ian D. ClarkCompton Dawes Adam WestGalloping Gazelle Malcolm StewartHoward O'Connor Terra VnesaHannah Stoneman Nicky GuadagniMarta Blackwell Jonathan WhittakerMr. Morris Jessica GrecoKaren Thurston Jason McSkimmingLuis Ferrara Heather BrownLizzy Morris Elizabeth SaundersPenelope Benson Michael WoodsReading Guard Jennifer PisanaLittle Girl Mark BeneshCurtis (uncredited) George KinamisSteve Boswell Fielding HoranTrick or Treater #1 Rider JohnsonTrick or Treater #2 Alexander BroughtonCostumed Boy #1 Suzanne CyrMrs. Swanson (uncredited) Martin RoachMr. Finley (uncredited) Roger DunnCaptain (uncredited) Mairlyn SmithMrs. Thurston Robert CollinsLord High Executioner Peter MessalineMr. Starkes Robert BuckSecurity Guard Frank NakashimaJapanese Man Ann HollowayPeasant Woman Bathsheba GarnettOld Crone Shirley JosephsHaggard Woman Julie KhanerMarilyn Boswell Hayley LochnerScolded Child Dave HarveyKindly Old Man Shannon DuffTrick-or-Treater #2 Christian MathesonThird Teen Ashley Dawn BrownJulia (uncredited) Tyrone SavageNicholas Morgan Tabitha LupienGinny Swanson Andreanne BenidirJillian Zinman David Warry-SmithDirector R.L. StineR.L. Stine / Writer Thomas L. WilhiteExecutive Producer Deborah ForteExecutive Producer 
