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Casting

Executive Producer

Joseph Barbera, William Hanna

Characters

William Hanna, Joseph Barbera

Frank Welker
Frank WelkerScooby-Doo (voice)
Scott Menville
Scott MenvilleShaggy Rogers / Dr. Trebla / Additional Voices (voice)
Jim Meskimen
Jim MeskimenRobi / Agent #1 (voice)
Casey Kasem
Casey KasemUncle Albert (voice)
Jeff Bennett
Jeff BennettDr. Phibes / Agent #2 (voice)