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)

E. G. Daily

Nathan (voice)

Frank Welker

Werewolf Vocal Effects (voice)

Kathi Castillo

Director

John Loy

Writer

Kathi Castillo

Character Designer

Micki Zurcher

Background Designer

Mark Watters

Original Music Composer

Kathi Castillo

Producer

Ross Bagdasarian, Jr.

Executive Producer

Janice Karman

Executive Producer