 Jack CorbettBilly 5000 (voice) | Billy 5000 (voice) |
 Grace KuhlenschmidtFreckles (voice) | Freckles (voice) |
 Elsie FisherBeatbox (voice) | Beatbox (voice) |
 Janeane GarofaloDr. Dolphin (voice) | Dr. Dolphin (voice) |
 Miya FolickRosario 'Rozebud' Dolphin (voice) | Rosario 'Rozebud' Dolphin (voice) |
 Tavi GevinsonGlarba (voice) | Glarba (voice) |
 Julio TorresT-Bone / Gas Station Guy / Brontosaurus (voice) | T-Bone / Gas Station Guy / Brontosaurus (voice) |
 Sarah ShermanMiss Sharon / Minivan Mom (voice) | Miss Sharon / Minivan Mom (voice) |
 Chris FlemingWeenie (voice) | Weenie (voice) |
 Cole EscolaOl' Slippy / Nan (voice) | Ol' Slippy / Nan (voice) |
 Joe PeraHerschel Cretaceous (voice) | Herschel Cretaceous (voice) |
 River L. RamirezGordon Spaghetti / Fettuccini Enthusiast / Paramedic / Minivan Baby (voice) | Gordon Spaghetti / Fettuccini Enthusiast / Paramedic / Minivan Baby (voice) |
 Demi AdejuyigbeMr. Moolah (voice) | Mr. Moolah (voice) |
 Eva VictorGail 5000 (voice) | Gail 5000 (voice) |
| MMax WittertByron (voice) | Byron (voice) |
| JJ.R. PhillipsPeanut (voice) | Peanut (voice) |
