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) / Editor Justina MachadoJamie Rivera (voice) Pam CoatsMrs. Rogers (voice) / Producer Tony CervoneGhost / Mr. Rigby / Alice (voice) / Reżyseria Alex KauffmanOfficer North (voice) Vanara TaingBaby Rotten (voice) / Editor Sarah LanciaDispatcher Stevens (voice) Adam SztykielOfficer Casey (voice) / Screenplay / Executive Producer Michael KurinskySamuel Colton (voice) / Production Design Tony CervoneGhost / Mr. Rigby / Alice (voice) / Reżyseria Chiranjiv MakwanaScreenplay Jack C. DonaldsonScreenplay Adam SztykielOfficer Casey (voice) / Screenplay / Executive Producer Andy HorwitzExecutive Producer Dan PovenmireExecutive Producer Richard SuckleExecutive Producer Tony CosanellaCo-Producer Pam CoatsMrs. Rogers (voice) / Producer Charles RovenExecutive Producer Chris ColumbusExecutive Producer Jesse EhrmanExecutive Producer Timothy Jason SmithAssociate Producer Michael KurinskySamuel Colton (voice) / Production Design Vanara TaingBaby Rotten (voice) / Editor Ryan FolseyBeach Guy (voice) / Editor Tom HolkenborgOriginal Music Composer Gabe HilferMusic Supervisor Tom RueggerVisual Effects Designer Bill HallerHead Of Animation Lex CassarVisual Development Noëlle RaffaeleStory Artist Rafael ZentilHead Of Story 
