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"“Muck to the rescue!" and "Let's get mucky!"
— Original catchphrases

Muck is a red dump truck fitted with a bulldozer blade and caterpillar tracks. He/She often acts before thinking and subsequently gets in trouble for it. His/Her machine-type is referred to as a "digger dump truck".


Muck is friendly and loves getting muddy. He/She does not like taking baths that much but takes them when he/she feels like it, or when he/she knows it is important. Muck is afraid of the dark, but he/she learns to be calm. Muck is also kind-hearted and is sometimes naughty, but he/she learns his/her lesson in the end.


Muck is a red dump truck with an additional bulldozer blade, caterpillar tracks and a shape-shifting mouth. In the original series, his/her headlight eyes are able to turn 360 degrees.


Original Series:



  • Muck was the second machine bought by Bob after Scoop needed help with excavation and carrying supplies.
  • Early descriptions of Muck in the US referred to him/her as a bulldozer.
  • Muck has both genders: Male in the UK and Female in the US.
  • Muck says that Dizzy is his/her best friend in When Bob Became A Builder.
  • Muck's original movement sound effect whenever he/she drives was a repeating thumping sound.
  • Muck was the first vehicle that Wendy had a ride on.
  • In the Finnish version, Muck is called "Pusku".

Main Characters
(Original Series)
BobWendyScoopMuckDizzyRoleyLoftyFarmer PicklesTravisSpudMr. Bernard Bentley
J.J.'s Building Yard J.J.MollySkipTrix
Project: Build It ScramblerBennyGripperGrabberTumblerFlexBristlePackerSumsy
Ready, Steady, Build! ScratchRubble
Friends and Neighbors
(Original Series)
Mrs. PottsMrs. PercivalMrs. BroadbentMr. DixonMr. BeasleyMr. FothergillMr. EllisAngelo SabatiniSophia SabatiniMrs. Barbara BentleyDavid DixonPam Goody
Friends and Neighbors
(Project: Build It)
RobertDorothyMarjorieSunnySaffronCarlo and CassiaSandy BeachMaxMr. BattersbyBazEllaMegPiperOscar FlicksMr. Carruthers
Friends and Neighbors
(Ready, Steady, Build!)
David MockneyBrad RadDickie OliverMrs. Toosie
One Time Characters Doris EllisPogoTony the HairdresserMr. StevenKatieMr. CostelloJana von StrudelCharleneMr. AdamsJackarooR.VeeMr. BellMrs. SeagullJanette JamisonUnknown Machines
Guest Characters Lennie LazenbyJennyTomBunty FergusonFlorence MountfitchetPirate BrickbeardUnnamed Humans
Bob's Animal Friends PilchardBirdFinTommySquawkScrufftyHamishTimmikinsHumptySprat
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