Cast
Jack Corbett
Billy 5000 (voice)
Grace Kuhlenschmidt
Freckles (voice)
Elsie Fisher
Beatbox (voice)
Janeane Garofalo
Dr. Dolphin (voice)
Miya Folick
Rosario 'Rozebud' Dolphin (voice)
Tavi Gevinson
Glarba (voice)
Julio Torres
T-Bone / Gas Station Guy / Brontosaurus (voice)
Sarah Sherman
Miss Sharon / Minivan Mom (voice)
Chris Fleming
Weenie (voice)
Cole Escola
Ol' Slippy / Nan (voice)
Joe Pera
Herschel Cretaceous (voice)
River L. Ramirez
Gordon Spaghetti / Fettuccini Enthusiast / Paramedic / Minivan Baby (voice)
Demi Adejuyigbe
Mr. Moolah (voice)
Eva Victor
Gail 5000 (voice)
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Max Wittert
Byron (voice)
