Scrambler needs help getting his treehouse project off the ground! Grab your hard hats and come along with Bob the Builder for his latest project.
| Actor | Role |
|---|---|
 Marc SilkBob | Bob |
| LLorelei KingWendy / Roley / Ella | Wendy / Roley / Ella |
 David MenkinScoop / Travis | Scoop / Travis |
 Sophie AldredMuck | Muck |
 Emma TateDizzy / Saffron / Cassia | Dizzy / Saffron / Cassia |
| LLizzie WaterworthLofty | Lofty |
 Jo WyattScratch | Scratch |
 Rob RackstrawSpud / Mr. Bentley / Grabber | Spud / Mr. Bentley / Grabber |
 Rupert DegasScrambler / Gripper / Dickie Olivier / Brad Rad / Sunny / Carlo | Scrambler / Gripper / Dickie Olivier / Brad Rad / Sunny / Carlo |