D.W. Read (voice)
Nadine Flumberghast (voice)
Arthur Read / Ruthra (voice)
Buster Baxter (voice)
Ladonna Compson / Cyborg Cyndi (voice)
Bud Compson / Muk (voice)
Emily / Filomena (voice)
Timmy Tibble / Bobbleboo (voice)
Tommy Tibble / Bobblebay (voice)
Nigel Ratburn (voice)
The Brain (voice)
Kate Read (voice)
Muffy Crosswire (voice)
David Read (voice)
Jane Read (voice)
Planetarium Narrator (voice)