Kadro (7)
Ross Bagdasarian Jr.Alvin, Simon, David Seville, Grandpa Seville (voice)
Janice KarmanTheodore, Grandma Seville (voice)
June ForayMrs. Claus, Mrs. Waterford (voice)
Frank WelkerSanta Claus, Doctor (voice)Charles BerendtClyde Crashcup (voice)
R.J. WilliamsTommy Waterford (voice)Thomas H. WatkinsMr. Carroll, Ebenezer (voice)