Curtis Armstrong
Robot DeFault / Marf (voice)
Harland Williams
Monster Krumholtz (voice)
Maurice LaMarche
Gart / Perry / Loudmouth (voice)
Jonathan Slavin
Ogo (voice)
Megan Hilty
J.D. (voice)
Cree Summer
Spitfire / Globitha (voice)
Rhea Perlman
Nessie (voice)
Fred Tatasciore
Punch Morley (voice)
Kurtwood Smith
Mr. Wheelie (voice)
Ping Wu
Master Grabmirist (voice)
Nolan North
Hal Worth-a-ton / Uncle Kuffley / Crikey (voice)
