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.
Scooby-Doo / Fred Jones / Self
Norville 'Shaggy' Rogers / Self - Voice of "Shaggy"
Daphne Blake / Self - Voice of "Daphne"
Velma Dinkley / Self - Voice of "Velma"
Janel Parrish - Host
Self - Animation Historian and Author
Self - Director and Producer, "The Simpsons"
Self - Actor, "Scooby-Doo 2: Monsters Unleashed"
Self - Director, "Scoob!" / Showrunner, "Mystery Incorporated"
Self - Animator, Historian
Self - Hanna-Barbera Co-Founder (archive footage)
Producer Bryn
Bram Penobscot - Scooby's Vocal Coach
Shaggy Rogers (voice) (archive footage)
Batman - Concerned Citizen (voice)
Self - Singer, Songwriter, Accordionist
Olivia Liang - Shaggy's Martial Arts Trainer
Costume Designer Carter
Lazlo the Mechanic
Scooby-Doo / Fred Jones / Self
Norville 'Shaggy' Rogers / Self - Voice of "Shaggy"
Daphne Blake / Self - Voice of "Daphne"
Velma Dinkley / Self - Voice of "Velma"
Janel Parrish - Host
Self - Animation Historian and Author
Self - Director and Producer, "The Simpsons"
Self - Actor, "Scooby-Doo 2: Monsters Unleashed"
Self - Director, "Scoob!" / Showrunner, "Mystery Incorporated"
Self - Animator, Historian
Self - Hanna-Barbera Co-Founder (archive footage)
Producer Bryn
Bram Penobscot - Scooby's Vocal Coach
Shaggy Rogers (voice) (archive footage)
Batman - Concerned Citizen (voice)
Self - Singer, Songwriter, Accordionist
Olivia Liang - Shaggy's Martial Arts Trainer
Costume Designer Carter
Lazlo the Mechanic
