Scooby-Doo/Shaggy Rogers

Huub Dikstaal

Shaggy Rogers

Will Forte

Dee Dee Skyes (voice)

Kiersey Clemons

Velma Dinkley

Jeske van de Staak

Blue Falcon (voice)

Mark Wahlberg

Scooby-Doo / Pterodactyl (voice)

Frank Welker

Dick Dastardly

Jason Isaacs

Daphne Blake

Roos van Erkel

Fred Jones

Thijs Prein

Velma Dinkley

Gina Rodriguez

Blue Falcon/Brian

Alexander de Bruijn

Fred Jones

Zac Efron

Harry Perry (voice)

Harry Perry

Dee Dee

Tara Hetharia

Daphne Blake

Amanda Seyfried

Ira Glass (voice)

Ira Glass

Dynomutt

Jop Joris

Dick Dastardly

Wiebe Pier Cnossen

Dynomutt

Ken Jeong

Captain Caveman

Tracy Morgan

Young Shaggy (voice)

Iain Armitage

Young Velma (voice)

Ariana Greenblatt

Young Daphne

Mckenna Grace

Charlie the ghost

Tenz McCall

Young Fred (voice)

Pierce Gagnon

Simon Cowell (voice)

Simon Cowell

Officer Jaffe

Christina Hendricks

Keith (voice)

Henry Winkler

Bike Cop Gary (voice)

Kevin Heffernan

Restaurant Owner (voice)

John DiMaggio

Chad / Chet (voice)

Henry Kaufman

Judy Takamoto (voice)

Maya Erskine

Muttley (voice)

Billy West

Muttley (archive audio) (voice)

Don Messick

Cerberus (voice)

Fred Tatasciore

Indira Knight (voice)

Kennedy Peil

Hal Murphy (voice)

John McDaniel

Beach Guy (voice)

Ryan Folsey

Jamie Rivera (voice)

Justina Machado

Mrs. Rogers (voice)

Pam Coats

Ghost / Mr. Rigby / Alice (voice)

Tony Cervone

Officer North (voice)

Alex Kauffman

Baby Rotten (voice)

Vanara Taing

Dispatcher Stevens (voice)

Sarah Lancia

Ben (voice)

Eric Cowell

Kari (voice)

Maven Morgan

Officer Casey (voice)

Adam Sztykiel

Samuel Colton (voice)

Michael Kurinsky

Police Officer

Jim Meskimen