Art Carney
Santa Claus/Cosmo Scam
Jim Henson
Fred/Lothar (voice)
Frank Oz
Thig/Skippity/Hoppity/Boppity/Snerf (voice)
Jerry Nelson
Thog/Zippity/Snivelly (voice)
Danny Seagren
Gloat/Snarl/Snerf (voice)
John Lovelady
Bong/Snake Frackle/Scoff/Snerf/Alarm Frackle (voice)
Richard Hunt
Bing/Match Frackle (voice)
Marilyn Sokol
Additional Muppet Performer (voice)
Byron Whiting
Additional Muppet Performer (voice)
Greg Antonacci
Additional Muppet Performer (voice)
Cary Antebi
Additional Muppet Performer (voice)
John Byrum
Additional Muppet Performer (voice)
Diane Kimbrell
Additional Muppets (voice) (uncredited)
Ed Sullivan
Self (uncredited)