Bob the Builder and his friends are back with a charming musical special. This time, Bob and his friends head out to the wild west and are hot on the trail of a secret treasure, though they are always able to take time out for a song or two.
| Actor | Role |
|---|---|
 Greg ProopsBob the Builder (voice) | Bob the Builder (voice) |
| LLorelei KingWendy (voice) | Wendy (voice) |
 Alan MarriottScoop (voice) | Scoop (voice) |
 Rob RackstrawSpud / Mr. Bentley / Rusty Rogers / Dollar / Brandy (voice) | Spud / Mr. Bentley / Rusty Rogers / Dollar / Brandy (voice) |
 Maria DarlingDizzy / Roley (voice) | Dizzy / Roley (voice) |
 Lachele CarlMuck (voice) | Muck (voice) |
 Emma TateLofty (voice) | Lofty (voice) |
 Suzi QuatroRio (voice) | Rio (voice) |
 Donny OsmondJackaroo (voice) | Jackaroo (voice) |
 Tim HowarBob the Builder (singing voice) | Bob the Builder (singing voice) |