Ross Bagdasarian, Jr.
David Seville / Alvin Seville / Simon Seville (voice)
Acting
Janice Karman
Theodore / Brittany / Jeanette / Eleanor (voice)
Acting
Dody Goodman
Miss Rebecca Miller (voice)
Acting
Susan Tyrrell
Claudia Furschtien (voice)
Acting
Anthony De Longis
Klaus Furschtien (voice)
Acting
Frank Welker
Sophie / Native Chief / Baby Penguin / Additional Voices (voice)
Acting
Nancy Cartwright
Arabian Prince (voice)
Acting
Philip L. Clarke
Additional Voices (voice)
Acting
Ken Sansom
Inspector Jamal (voice)
Acting
George Poulos
Additional Voices (voice)
Acting
Charlie Adler
Additional Voices (voice)
Acting
Patrick Pinney
Additional Voices (voice)
Acting
Jack Angel
Additional Voices (voice; uncredited)
Acting
Mel Blanc
Additional Voices (voice; uncredited)
Acting
Laura Summer
Additional Voices (voice; uncredited)
Acting