All Cast

Will Forte

Will Forte

Shaggy Rogers (voice)

Frank Welker

Frank Welker

Scooby-Doo / Pterodactyl (voice)

Mark Wahlberg

Mark Wahlberg

Blue Falcon (voice)

Jason Isaacs

Jason Isaacs

Dick Dastardly (voice)

Ken Jeong

Ken Jeong

Dynomutt, Dog Wonder (voice)

Amanda Seyfried

Amanda Seyfried

Daphne Blake (voice)

Gina Rodriguez

Gina Rodriguez

Velma Dinkley (voice)

Zac Efron

Zac Efron

Fred Jones (voice)

Iain Armitage

Iain Armitage

Young Shaggy (voice)

Ariana Greenblatt

Ariana Greenblatt

Young Velma (voice)

Mckenna Grace

Mckenna Grace

Young Daphne (voice)

Pierce Gagnon

Pierce Gagnon

Young Fred (voice)

Kiersey Clemons

Kiersey Clemons

Dee Dee Skyes (voice)

Tracy Morgan

Tracy Morgan

Captain Caveman (voice)

Simon Cowell

Simon Cowell

Simon Cowell (voice)

Harry Perry

Harry Perry

Harry Perry (voice)

Kevin Heffernan

Kevin Heffernan

Bike Cop Gary (voice)

Christina Hendricks

Christina Hendricks

Officer Jaffe (voice)

Henry Winkler

Henry Winkler

Keith (voice)

John DiMaggio

John DiMaggio

Restaurant Owner (voice)

Ira Glass

Ira Glass

Ira Glass (voice)

Henry Kaufman

Henry Kaufman

Chad / Chet (voice)

Maya Erskine

Maya Erskine

Judy Takamoto (voice)

Billy West

Billy West

Muttley (voice)

Don Messick

Don Messick

Muttley (archive sound) (voice)

Fred Tatasciore

Fred Tatasciore

Cerberus (voice)

Kennedy Peil

Kennedy Peil

Indira Knight (voice)

John McDaniel

John McDaniel

Hal Murphy (voice)

Ryan Folsey

Ryan Folsey

Beach Guy (voice)

Justina Machado

Justina Machado

Jamie Rivera (voice)

Pam Coats

Pam Coats

Mrs. Rogers (voice)

Tony Cervone

Tony Cervone

Ghost / Mr. Rigby / Alice (voice)

Alex Kauffman

Alex Kauffman

Officer North (voice)

Vanara Taing

Vanara Taing

Baby Rotten (voice)

Sarah Lancia

Sarah Lancia

Dispatcher Stevens (voice)

Eric Cowell

Eric Cowell

Ben (voice)

Maven Morgan

Maven Morgan

Kari (voice)

Adam Sztykiel

Adam Sztykiel

Officer Casey (voice)

Michael Kurinsky

Michael Kurinsky

Samuel Colton (voice)