

Frank Welker
Scooby-Doo / Fred Jones / Self

Matthew Lillard
Norville 'Shaggy' Rogers / Self - Voice of "Shaggy"

Grey DeLisle
Daphne Blake / Self - Voice of "Daphne"

Kate Micucci
Velma Dinkley / Self - Voice of "Velma"

Janel Parrish
Janel Parrish - Host

Jerry Beck
Self - Animation Historian and Author

David Silverman
Self - Director and Producer, "The Simpsons"

Seth Green
Self - Actor, "Scooby-Doo 2: Monsters Unleashed"

Tony Cervone
Self - Director, "Scoob!" / Showrunner, "Mystery Incorporated"

Tom Sito
Self - Animator, Historian

Joseph Barbera
Self - Hanna-Barbera Co-Founder (archive footage)

Mary Lynn Rajskub
Producer Bryn

Baron Vaughn
Bram Penobscot - Scooby's Vocal Coach

Casey Kasem
Shaggy Rogers (voice) (archive footage)

Diedrich Bader
Batman - Concerned Citizen (voice)
Company
Warner Bros. Animation
Company
Abominable Pictures
Company
Warner Horizon Television
Producer
David Soldinger
Producer
Franny Baldwin

Dragons: Rescue Riders: Hunt for the Golden Dragon
2020

The Wind in the Willows
1983

Dragons: Rescue Riders: Secrets of the Songwing
2020

Scooby-Doo! in Where's My Mummy?
2005

Scooby-Doo! Legend of the Phantosaur
2011

It Was a Short Summer, Charlie Brown
1969

Sofia the First: Once Upon a Princess
2012

Scooby-Doo! Stage Fright
2013

Scooby-Doo! Ghastly Goals
2014

The Wind in the Willows
1995

To Grandmother's House We Go
1992

Invisible Sister
2015

Sofia the First: The Floating Palace
2013

Scooby-Doo! and KISS: Rock and Roll Mystery
2015

The Land Before Time III: The Time of the Great Giving
1995

Hey Arnold! The Jungle Movie
2018

Adventures in Babysitting
2016

Trick or Treat Scooby-Doo!
2022

Garage Sale Mystery: Guilty Until Proven Innocent
2016

Scooby-Doo! Mecha Mutt Menace
2013