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
Self - Showrunner, "Mystery Incorporated"
Lazlo the Mechanic
Arlo Davidsonman - Team Scooby
Snow Ghost
Additional Voices (voice)
