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As Alvin struggles with nightmares involving werewolves, the school play of Jekyll & Hyde is in jeopardy when the lead, Alvin, is suspended. In an attempt to boost his confidence, the principal suggests Theodore, who's suddenly going through some canine changes.
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Kathi Castillo
John Loy
Ross Bagdasarian Jr.Alvin Seville / Simon Seville / Dave Seville (voice)
Janice KarmanTheodore / Brittany / Jeanette / Eleanor (voice)
Maurice LaMarcheMr. Lawrence Talbot (voice)
Miriam FlynnPrincipal Milliken (voice)
Rob PaulsenMr. Rochelle (voice)
April WinchellMadame Raya (voice)
E. G. DailyNathan (voice)
Frank WelkerWerewolf Vocal Effects (voice)
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