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) / Střihač Justina MachadoJamie Rivera (voice) Pam CoatsMrs. Rogers (voice) / Producent Tony CervoneGhost / Mr. Rigby / Alice (voice) / Režisér Alex KauffmanOfficer North (voice) Vanara TaingBaby Rotten (voice) / Střihač Sarah LanciaDispatcher Stevens (voice) Adam SztykielOfficer Casey (voice) / Scénář / Výkonný producent Michael KurinskySamuel Colton (voice) / Production Design Tony CervoneGhost / Mr. Rigby / Alice (voice) / Režisér Adam SztykielOfficer Casey (voice) / Scénář / Výkonný producent Andy HorwitzVýkonný producent Dan PovenmireVýkonný producent Richard SuckleVýkonný producent Tony CosanellaKoproducent Pam CoatsMrs. Rogers (voice) / Producent Charles RovenVýkonný producent Chris ColumbusVýkonný producent Jesse EhrmanVýkonný producent Timothy Jason SmithSpoluproducent Michael KurinskySamuel Colton (voice) / Production Design Vanara TaingBaby Rotten (voice) / Střihač Ryan FolseyBeach Guy (voice) / Střihač Tom HolkenborgHudební skladatel Gabe HilferMusic Supervisor Tom RueggerVisual Effects Designer Bill HallerHead Of Animation Lex CassarVisual Development Noëlle RaffaeleStory Artist Rafael ZentilHead Of Story 
