Rudolph must find Happy, the baby new year, before the midnight of New Year's Eve.
| Actor | Role |
|---|---|
 Red SkeltonFather Time / Baby Bear (voice) | Father Time / Baby Bear (voice) |
 Frank GorshinSir Ten-to-Three (voice) | Sir Ten-to-Three (voice) |
 Morey AmsterdamOne Million (voice) | One Million (voice) |
 Harold PearyBig Ben (voice) | Big Ben (voice) |
 Paul FreesSanta Claus / Aeon / General Ticker / Seventeen Seventy Six | Santa Claus / Aeon / General Ticker / Seventeen Seventy Six |
| BBillie Mae RichardsRudolph (voice) | Rudolph (voice) |
| DDon MessickPapa Bear / Rumpelstiltskin (voice) | Papa Bear / Rumpelstiltskin (voice) |
 June ForayHappy (uncredited) | Happy (uncredited) |
 Iris RainerMama Bear (voice) (uncredited) | Mama Bear (voice) (uncredited) |