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Jeff BennettMike (voice)
Tress MacNeilleMary Beth (voice)
Ed GilbertProfessor Heiny (voice)
Frank WelkerGulliver (voice)
Elizabeth LamersSinger #1 (voice)
Julie BernsteinSinger #2 (voice)Bob JoyceSinger #3 (voice)
Dorian HarewoodSinger #4 (voice)
Jonathan HarrisProfessor Jones (voice)
