Michael Bell

Opus the Penguin (voice)

Joe Alaskey

Truffles / The Ducks (voice)

John Byner

Bill (voice)

Tress MacNeille

Chicken (voice)

Alexaundria Simmons

Ronald-Ann (voice)

Andrew Hill Newman

Milquetoast (voice)

Robin Williams

Kiwi (voice) (credited as Sudy Nim)

Frank Welker

Santa Claus (voice)