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 Sewariel (voice) Fred TatascioreChaos (voice) Patrick SeitzTreegor (voice) Rhasaan OrangeWeasel (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) George KaprielianDirector Matt WhitlockDirector / Writer Maxwell AtomsDirector / Writer / Producer Ian WasselukDirector / Writer Jessica BorutskiDirector / Writer / Producer Robert HughesDirector / Writer Shaunt NigoghossianDirector / Producer James HoweConsulting Producer / Book Paul Edward-FrancisMain Title Theme Composer 
