Ross Bagdasarian, Jr.

Alvin Seville / Simon Seville / Dave Seville (voice)

Janice Karman

Theodore / Brittany / Jeanette / Eleanor (voice)

Maurice LaMarche

Mr. Lawrence Talbot (voice)

Miriam Flynn

Principal Milliken (voice)

Rob Paulsen

Mr. Rochelle (voice)

April Winchell

Madame Raya (voice)

Elizabeth Daily

Nathan (voice)

Frank Welker

Werewolf Vocal Effects (voice)