How many movies have Casey Kasem and John Stephenson acted in together?

They have worked on 14 movies together! Their first movie together was The Flintstones Meet Rockula and Frankenstone (1979) while their highest rated movie together was Scooby-Doo's Original Mysteries (2000). They have not worked together since Scooby-Doo! Frankencreepy (2014). They are most known for their animation films together.

Role
Shaggy Rogers (voice) (archive footage)
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Roger (voice) (archive footage)
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Shaggy Rogers / Sheriff (voice) (archive footage)
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Ghost (voice) (archive footage)
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Shaggy Rogers (voice) (archive footage)
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Zelig (voice) (archive footage)
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Shaggy Rogers (voice) (archive footage)
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(voice) (archive footage)
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Shaggy Rogers (voice) (archive footage)
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Redbeard the Pirate (voice) (archive footage)
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Shaggy (voice)
Crew
Sound Technical Supervisor
Crew
Executive Producer
Crew
Co-Executive Producer
Crew
Co-Producer
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Norville 'Shaggy' Rogers (voice) (archive footage)
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Additional Voices (voice) (archive footage)
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Shaggy Rogers / Officer (voice)
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Additional Voices (voice)
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Shaggy Rogers (voice) (archive footage)
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Workers / Additional Voices (voice) (archive footage)
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Shaggy Rogers / Additional Voices / Officer (voice)
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Additional Voices (voice)
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Meriadoc 'Merry' Brandybuck (voice)
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Gondorian Guard / Dwimmerlaik - The Witch-King of Angmar (voice)