The Great Santa Claus Switch

Art Carney

Santa Claus / Cosmo Scam

Ed Sullivan

Self / Host / Narrator (uncredited)

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)