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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)