Pamela Adlon

as Taboo (voice)

Jeff Bennett

as Dad / Agent Gus / Sir Winston Windmill (voice)

E. G. Daily

as Angela / Dolly (voice)

Tara Strong

as Bubbles / Zipper (voice)

Cree Summer

as Cupcake / Mom (voice)

Jennifer Carpenter

as Pepper (voice)

Fred Stoller

as Ralph (voice)