Director: Jonathan Stern
After 52 years of solving mysteries, the Scooby gang reunite at Warner Bros. Studios to reminisce about their favorite cases and how they were filmed. But it turns out that the back lot may have its OWN monster problem. Fred, Daphne, Velma, Shaggy, and Scooby-Doo investigate this mystery while celebrating the legacy of the franchise.
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)
'Weird Al' Yankovic
Self - Singer, Songwriter, Accordionist
Olivia Liang
Olivia Liang - Shaggy's Martial Arts Trainer
Karamo Brown
Costume Designer Carter
Mitch Watson
Self - Showrunner, "Mystery Incorporated"
Cheri Oteri
Lazlo the Mechanic
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)
'Weird Al' Yankovic
Self - Singer, Songwriter, Accordionist
Olivia Liang
Olivia Liang - Shaggy's Martial Arts Trainer
Karamo Brown
Costume Designer Carter
Mitch Watson
Self - Showrunner, "Mystery Incorporated"
Cheri Oteri
Lazlo the Mechanic
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)
'Weird Al' Yankovic
Self - Singer, Songwriter, Accordionist
Olivia Liang
Olivia Liang - Shaggy's Martial Arts Trainer
Karamo Brown
Costume Designer Carter
Mitch Watson
Self - Showrunner, "Mystery Incorporated"
Cheri Oteri
Lazlo the Mechanic