Alicia Witt
Caitlin Fairchild (voice)
John de Lancie
Colonel John 'Jack' Lynch (voice)
Elizabeth Daily
Freefall / Roxy Spaulding (voice)
Flea
Grunge / Edward Chang (voice)
Mark Hamill
Threshold / Matthew Callahan (voice)
Lauren Lane
Ivana Baiul (voice)
Cloris Leachman
Helga (voice)
Corey Burton
Additional Voices (voice)
John DeMita
Additional Voices (voice)
Julia DeMita
Additional Voices (voice)
Debi Derryberry
Additional Voices (voice)
Dave Fennoy
Additional Voices (voice)
Alex Fernandez
Additional Voices (voice)
John Hostetter
Additional Voices (voice)
Matt McKenzie
Additional Voices (voice)
Matt K. Miller
Additional Voices (voice)
Andrew Philpot
Additional Voices (voice)
Pamela Adlon
Additional Voices (voice)
Michael Sorich
Additional Voices (voice)
Kath Soucie
Rachel (voice)
Ahmet Zappa
Additional Voices (voice)
Keith Ferguson
Additional Voices (voice; uncredited)
Jennifer Hale
Additional Voices (voice; uncredited)
Phil LaMarr
Additional Voices (voice; uncredited)
Ryan Ochoa
Additional Voices (voice; uncredited)