- Wakko as Percy
- Ralph as Henry
- Yakko as Thomas
- Perfecto Prep Alumni (from Tiny Toon Adventures) as Troublesome Trucks
- Private Meekly (from Wacky Races) as Percy's Driver
- King Acorn (from Sonic The Hedgehog) as Sir Topham Hatt
- Tails (from Sonic The Hedgehog) as Bill (not named)
- Sonic (from Sonic The Hedgehog) as Ben (not named)
- Brain as Diesel (cameo)
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