When Grouchy Smurf behaves badly to everyone and refuses to celebrate Christmas, the Smurfs of Christmas Past, Present and Future teach him to appreciate Christmas.
| Actor | Role |
|---|---|
 Jack AngelPapa Smurf (voice) | Papa Smurf (voice) |
 Fred ArmisenBrainy (voice) | Brainy (voice) |
 Hank AzariaGargamel (voice) | Gargamel (voice) |
 Gary BasarabaHefty (voice) | Hefty (voice) |
 George LópezGrouchy (voice) | Grouchy (voice) |
 Melissa SturmSmurfette (voice) | Smurfette (voice) |
 Anton YelchinClumsy (voice) | Clumsy (voice) |
 Frank WelkerAzrael (voice) | Azrael (voice) |
 Kirk BailyAdditional Voices (voice) | Additional Voices (voice) |
 Jess HarnellAdditional Voices (voice) | Additional Voices (voice) |
 Jeff FischerAdditional Voices (voice) | Additional Voices (voice) |
 Craig KellmanAdditional Voices (voice) | Additional Voices (voice) |
 John Hans TesterAdditional Voices (voice) | Additional Voices (voice) |