Alvin Seville / Simon Seville / Dave Seville (voice)

Ross Bagdasarian, Jr.

Acting

Theodore / Brittany / Jeanette / Eleanor (voice)

Janice Karman

Acting

Mr. Lawrence Talbot (voice)

Maurice LaMarche

Acting

Principal Milliken (voice)

Miriam Flynn

Acting

Mr. Rochelle (voice)

Rob Paulsen

Acting

Madame Raya (voice)

April Winchell

Acting

Nathan (voice)

E. G. Daily

Acting

Werewolf Vocal Effects (voice)

Frank Welker

Acting