Cast
Ross Bagdasarian, Jr.
Alvin, Simon, David Seville, Grandpa Seville (voice) • 4 episodes
Janice Karman
Theodore, Grandma Seville (voice) • 4 episodes
June Foray
Mrs. Claus, Mrs. Waterford (voice) • 1 episodes
Frank Welker
Santa Claus, Doctor (voice) • 1 episodes
Charles Berendt
Clyde Crashcup (voice) • 1 episodes
R.J. Williams
Tommy Waterford (voice) • 1 episodes
Thomas H. Watkins
Mr. Armstrong (voice) • 2 episodes
Thomas H. Watkins
Mr. Carroll, Ebenezer (voice) • 2 episodes