Top Billed Cast

1. 

   Frank Welker

   Scooby-Doo / Fred Jones / Self

2. 

   Matthew Lillard

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

3. 

   Grey DeLisle

   Daphne Blake / Self - Voice of "Daphne"

4. 

   Kate Micucci

   Velma Dinkley / Self - Voice of "Velma"

5. 

   Janel Parrish

   Janel Parrish - Host

6. 

   Jerry Beck

   Self - Animation Historian and Author

7. 

   David Silverman

   Self - Director and Producer, "The Simpsons"

8. 

   Seth Green

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

9. 

   Tony Cervone

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

10. 

    Tom Sito

    Self - Animator, Historian

11. 

    Joseph Barbera

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

12. 

    Mary Lynn Rajskub

    Producer Bryn

13. 

    Baron Vaughn

    Bram Penobscot - Scooby's Vocal Coach

14. 

    Casey Kasem

    Shaggy Rogers (voice) (archive footage)

15. 

    Diedrich Bader

    Batman - Concerned Citizen (voice)

16. 

    "Weird Al" Yankovic

    Self - Singer, Songwriter, Accordionist

17. 

    Olivia Liang

    Olivia Liang - Shaggy's Martial Arts Trainer

18. 

    Karamo Brown

    Costume Designer Carter

19. 

    Mitch Watson

    Self - Showrunner, "Mystery Incorporated"

20. 

    Cheri Oteri

    Lazlo the Mechanic

21. 

    Brendan Jennings

    Arlo Davidsonman - Team Scooby

22. 

    Vadym Krasnenko

    Snow Ghost

23. 

    Lindsey Alena

    Additional Voices (voice)

24. 

    Dominic Catrambone

    Additional Voices (voice)

25. 

    Fred Tatasciore

    Additional Voices (voice)