Sean AstinChester (voice) Brian KimmetHarold (voice) Chris KattanBunnicula / Mina's Dad (voice) Kari WahlgrenMina (voice) Eric BauzaPatches the Weredude (voice) Richard Steven HorvitzLugosi (voice) Sonya LeslieQueen Shelia (voice) Fred TatascioreChaos (voice) Patrick SeitzZogthoth (voice) Rhasaan OrangeFutbol Furries Leader (voice) Steve BlumMarvin the Ghost (voice) Tom KennyMr. Molesby / Moles (voice) Carlos AlazraquiGiant Snake (voice) Laraine NewmanGreta (voice) Harland WilliamsThomas Edison's Ghost / Alien (voice) Chad DoreckColt Bifton (voice) Joe J. ThomasPa Rabbit (voice) Carl LumblyLead Prison Guard / Vampire Bat (voice) Daran NorrisAgent 51 (voice) Rick ZieffGeneral Cashews (voice) Yuri LowenthalZakarov (voice) Donovan PattonPutt-Putt Pete (voice) Max MittelmanGenie (voice) Robert CatriniRat Pack Boss (voice) Jasmine KaurDJ Demon (voice) Will FriedleCaptain Science Magic Love (voice) P.J. ByrneBoogaloo (voice) David ShaughnessyHarold's Tail (voice) Roger Craig SmithParty Animal (voice) Trevor DevallLucky Cricket (voice) Grey DeLisleMadam Pollidori (voice) Yvette Nicole BrownMs. Varney (voice) Kate HigginsBecky (voice) George KaprielianRegisseur Ian WasselukRegisseur / Schrijver Matt WhitlockRegisseur / Schrijver Maxwell AtomsRegisseur / Schrijver / Producer Jessica BorutskiRegisseur / Schrijver / Producer Robert HughesRegisseur / Schrijver Shaunt NigoghossianRegisseur / Producer Brady KlostermanSchrijver John Bailey OwenSchrijver James HoweConsulting Producer / Book Paul Edward-FrancisMain Title Theme Composer Jordan GershowitzTeleplay 
