Scoob!

Billy West as Muttley (voice) Amanda Seyfried as Daphne Blake (voice) Gina Rodriguez as Velma Dinkley (voice) Zac Efron as Fred Jones (voice) Iain Armitage as Young Shaggy (voice) Henry Winkler as Keith (voice) Fred Tatasciore as Cerberus (voice) Jason Isaacs as Dick Dastardly (voice) Ariana Greenblatt as Young Velma (voice) Pierce Gagnon as Young Fred (voice) Tracy Morgan as Captain Caveman (voice) Kevin Heffernan as Bike Cop Gary (voice) Justina Machado as Jamie Rivera (voice) Mark Wahlberg as Blue Falcon (voice) Tony Cervone as Ghost / Mr. Rigby / Alice (voice) Will Forte as Shaggy Rogers (voice) Frank Welker as Scooby-Doo / Pterodactyl (voice) Ken Jeong as Dynomutt, Dog Wonder (voice) Don Messick as Muttley (archive sound) (voice) Mckenna Grace as Young Daphne (voice) Simon Cowell as Simon Cowell (voice) Kiersey Clemons as Dee Dee Skyes (voice) Christina Hendricks as Officer Jaffe (voice) John DiMaggio as Restaurant Owner (voice) Ira Glass as Ira Glass (voice) Maya Erskine as Judy Takamoto (voice)

Allison Abbate Producer Rico Nasty Songs Tom Holkenborg Original Music Composer Jack Donaldson Screenplay Lex Cassar Visual Development Ava Max Songs Jack Harlow Songs Pink Sweat$ Songs Chris Columbus Executive Producer Eyal Podell Story Gabe Hilfer Music Supervisor Tony Cervone Director Dan Povenmire Executive Producer Charlie Puth Songs Charles Roven Executive Producer Tom Ruegger Art Designer, Visual Effects Designer Matt Lieberman Screenplay, Story Richard Suckle Executive Producer