All Rerun wants from Santa is a dog, but his mother won't let him have one. Spending time with Snoopy provides the perfect pick-me-up. But when Snoopy gets too busy to play with Rerun, they call in a substitute—Snoopy's brother Spike.
| Actor | Role |
|---|---|
 Jimmy BennettRerun Van Pelt (voice) | Rerun Van Pelt (voice) |
 Adam Taylor GordonCharlie Brown (voice) | Charlie Brown (voice) |
 Ashley Rose OrrLucy Van Pelt (voice) | Lucy Van Pelt (voice) |
 Corey PadnosLinus Van Pelt (voice) | Linus Van Pelt (voice) |
 Hannah LeighSally Brown (voice) | Sally Brown (voice) |
 Nick PriceSchroeder (voice) | Schroeder (voice) |
| JJake MinerPig Pen / Franklin (voice) | Pig Pen / Franklin (voice) |
 Kaitlyn MaggioLittle Pigtailed Girl / Violet / Patty / Frieda (voice) | Little Pigtailed Girl / Violet / Patty / Frieda (voice) |
 Bill MelendezSnoopy / Spike (voice) | Snoopy / Spike (voice) |