The Madballs are a zany animated rock band who rock and roll their way across the galaxy. Music is illegal on their home planet so they make a break for it on Earth.
| Actor | Role |
|---|---|
| GGeoffrey BowesScreamin Meemie (voice) | Screamin Meemie (voice) |
| JJeri CradenDusty (voice) | Dusty (voice) |
 Cree SummerFreakella (voice) | Freakella (voice) |
| KKeith HampshireHorn Head (voice) | Horn Head (voice) |
 Alyson CourtSandy (voice) | Sandy (voice) |
 Don FrancksWolf Breath (voice) | Wolf Breath (voice) |
 Dan HennesseySlobulus / Bruise Brother (voice) | Slobulus / Bruise Brother (voice) |
 John StockerAargh / Skull Face (voice) | Aargh / Skull Face (voice) |
| CChristopher WardSkip (voice) | Skip (voice) |