Will Forte
Shaggy Rogers (voice)
Acting
Frank Welker
Scooby-Doo / Pterodactyl (voice)
Acting
Mark Wahlberg
Blue Falcon (voice)
Acting
Jason Isaacs
Dick Dastardly (voice)
Acting
Ken Jeong
Dynomutt, Dog Wonder (voice)
Acting
Amanda Seyfried
Daphne Blake (voice)
Acting
Gina Rodriguez
Velma Dinkley (voice)
Acting
Zac Efron
Fred Jones (voice)
Acting
Iain Armitage
Young Shaggy (voice)
Acting
Ariana Greenblatt
Young Velma (voice)
Acting
Mckenna Grace
Young Daphne (voice)
Acting
Pierce Gagnon
Young Fred (voice)
Acting
Kiersey Clemons
Dee Dee Skyes (voice)
Acting
Tracy Morgan
Captain Caveman (voice)
Acting
Simon Cowell
Simon Cowell (voice)
Acting
Harry Perry
Harry Perry (voice)
Acting
Kevin Heffernan
Bike Cop Gary (voice)
Acting
Christina Hendricks
Officer Jaffe (voice)
Acting
Henry Winkler
Keith (voice)
Acting
John DiMaggio
Restaurant Owner (voice)
Acting
Ira Glass
Ira Glass (voice)
Acting
Henry Kaufman
Chad / Chet (voice)
Acting
Maya Erskine
Judy Takamoto (voice)
Acting
Billy West
Muttley (voice)
Acting
Don Messick
Muttley (archive sound) (voice)
Acting
Fred Tatasciore
Cerberus (voice)
Acting
Kennedy Peil
Indira Knight (voice)
Acting
John McDaniel
Hal Murphy (voice)
Acting
Ryan Folsey
Beach Guy (voice)
Editing
Justina Machado
Jamie Rivera (voice)
Acting
Pam Coats
Mrs. Rogers (voice)
Production
Tony Cervone
Ghost / Mr. Rigby / Alice (voice)
Directing
Alex Kauffman
Officer North (voice)
Acting
Vanara Taing
Baby Rotten (voice)
Editing
Sarah Lancia
Dispatcher Stevens (voice)
Acting
Eric Cowell
Ben (voice)
Acting
Maven Morgan
Kari (voice)
Acting
Adam Sztykiel
Officer Casey (voice)
Writing
Michael Kurinsky
Samuel Colton (voice)
Art