Will ForteShaggy Rogers (voice) Frank WelkerScooby-Doo / Pterodactyl (voice) Mark WahlbergBlue Falcon (voice) Jason IsaacsDick Dastardly (voice) Ken JeongDynomutt, Dog Wonder (voice) Amanda SeyfriedDaphne Blake (voice) Gina RodriguezVelma Dinkley (voice) Zac EfronFred Jones (voice) Mckenna GraceYoung Daphne (voice) Iain ArmitageYoung Shaggy (voice) Ariana GreenblattYoung Velma (voice) Pierce GagnonYoung Fred (voice) Kiersey ClemonsDee Dee Skyes (voice) Tracy MorganCaptain Caveman (voice) Simon CowellSimon Cowell (voice) Harry PerryHarry Perry (voice) Kevin HeffernanBike Cop Gary (voice) Christina HendricksOfficer Jaffe (voice) Henry WinklerKeith (voice) John DiMaggioRestaurant Owner (voice) Ira GlassIra Glass (voice) Henry KaufmanChad / Chet (voice) Maya ErskineJudy Takamoto (voice) Billy WestMuttley (voice) Don MessickMuttley (archive sound) (voice) Fred TatascioreCerberus (voice) Kennedy PeilIndira Knight (voice) John McDanielHal Murphy (voice) Ryan FolseyBeach Guy (voice) / Montatore Justina MachadoJamie Rivera (voice) Pam CoatsMrs. Rogers (voice) / Produttore Tony CervoneGhost / Mr. Rigby / Alice (voice) / Regista Alex KauffmanOfficer North (voice) Vanara TaingBaby Rotten (voice) / Montatore Sarah LanciaDispatcher Stevens (voice) Adam SztykielOfficer Casey (voice) / Sceneggiatura / Produttore Esecutivo Michael KurinskySamuel Colton (voice) / Production Design Tony CervoneGhost / Mr. Rigby / Alice (voice) / Regista Chiranjiv MakwanaSceneggiatura Matt LiebermanSceneggiatura Jack C. DonaldsonSceneggiatura Adam SztykielOfficer Casey (voice) / Sceneggiatura / Produttore Esecutivo Derek ElliottSceneggiatura Andy HorwitzProduttore Esecutivo Dan PovenmireProduttore Esecutivo Richard SuckleProduttore Esecutivo Tony CosanellaCo-produttore Pam CoatsMrs. Rogers (voice) / Produttore Charles RovenProduttore Esecutivo Chris ColumbusProduttore Esecutivo Jesse EhrmanProduttore Esecutivo Timothy Jason SmithProduttore Associato Michael KurinskySamuel Colton (voice) / Production Design Vanara TaingBaby Rotten (voice) / Montatore Ryan FolseyBeach Guy (voice) / Montatore Tom HolkenborgCompositore Musicale Originale Gabe HilferMusic Supervisor Tom RueggerVisual Effects Designer Bill HallerHead Of Animation Lex CassarVisual Development Noëlle RaffaeleStory Artist Jonathon E. StewartStoria Rafael ZentilHead Of Story 
