 Noah SchnappCharlie Brown (voice) | Charlie Brown (voice) |
 Bill MelendezSnoopy / Woodstock (voice) (archive sound) | Snoopy / Woodstock (voice) (archive sound) |
 Marleik 'Mar Mar' WalkerFranklin Armstrong (voice) | Franklin Armstrong (voice) |
 Alex GarfinLinus Van Pelt (voice) | Linus Van Pelt (voice) |
 Hadley Belle MillerLucy van Pelt (voice) | Lucy van Pelt (voice) |
 Rebecca BloomMarcie (voice) | Marcie (voice) |
 Anastasia BredikhinaPatty (voice) | Patty (voice) |
 Venus SchultheisPeppermint Patty (voice) | Peppermint Patty (voice) |
 A.J. TeccePigpen (voice) | Pigpen (voice) |
 Mariel SheetsSally Brown (voice) | Sally Brown (voice) |
 Noah JohnstonSchroeder (voice) | Schroeder (voice) |
 William WunschShermy (voice) | Shermy (voice) |
 Madisyn ShipmanViolet Grey (voice) | Violet Grey (voice) |
 Kristin ChenowethFifi (voice) | Fifi (voice) |
| MMicah RevelliLittle Kid (voice) | Little Kid (voice) |
 Trombone ShortyMiss Othmar / Mrs. Little Red-Haired Girl (voice) | Miss Othmar / Mrs. Little Red-Haired Girl (voice) |
 Francesca CapaldiThe Little Red-Haired Girl / Frieda (voice) | The Little Red-Haired Girl / Frieda (voice) |
 Holly DorffVarious Voices (voice) | Various Voices (voice) |
| KKelly Michele MillsVarious Voices (voice) | Various Voices (voice) |
 Al NelsonVarious Voices (voice) | Various Voices (voice) |
 Tessa NettingVarious Voices (voice) | Various Voices (voice) |
 Randy ThomVarious Voices (voice) | Various Voices (voice) |
| RRandy TragerVarious Voices (voice) | Various Voices (voice) |
| GGwendolyn Yates WhittleVarious Voices (voice) | Various Voices (voice) |
| GGia BravosGroup Voices (voice) | Group Voices (voice) |
| IIleanna BravosGroup Voices (voice) | Group Voices (voice) |
 Nikolas BravosGroup Voices (voice) | Group Voices (voice) |
| CClayton DrierGroup Voices (voice) | Group Voices (voice) |
| KKori ElmoreGroup Voices (voice) | Group Voices (voice) |
| AAdam Joshua JastrowGroup Voices (voice) | Group Voices (voice) |
