Mother's Day is almost here, and the gang is excited—except Peppermint Patty. For her, it's a reminder that she didn’t grow up with a mom. But good pal Marcie helps Peppermint Patty see that families come in all shapes and sizes.
| Actor | Role |
|---|---|
 Tyler James NathanCharlie Brown (voice) | Charlie Brown (voice) |
 Terry McGurrinSnoopy (voice) | Snoopy (voice) |
 Lexi PerriPeppermint Patty (voice) | Peppermint Patty (voice) |
 Rob TinklerWoodstock / Woodstock's Mom / Woodstock's Siblings / Bunnies (voice) | Woodstock / Woodstock's Mom / Woodstock's Siblings / Bunnies (voice) |
 Isabella LeoLucy (voice) | Lucy (voice) |
 Wyatt WhiteLinus (voice) | Linus (voice) |
 Hattie KragtenSally (voice) | Sally (voice) |
 Holly GorskiMarcie (voice) | Marcie (voice) |
 Caleb BellavanceFranklin (voice) | Franklin (voice) |
| NNatasha NathanPatty (voice) | Patty (voice) |
 Charlie BoyleViolet (voice) | Violet (voice) |
 Jacob SoleyPigpen (voice) | Pigpen (voice) |
 Maya MisaljevicFrieda (voice) | Frieda (voice) |
| MMatthew MucciSchroeder (voice) | Schroeder (voice) |