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

Muck is a red Shantui SD22 bulldozer with an additional, fitted dump bed. He/She often acts before thinking and subsequently gets in trouble for it.


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 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 silly, but he/she learns his/her lesson in the end.


Muck is red with an orange blade and dump bed. His/Her caterpillar tracks are black and his/her hydraulic cylinders are silver, along with his/her mouth.


Original Series:


Project: Build It:



  • Muck was the second machine bought by Bob after Scoop needed help with excavation and carrying supplies.
  • Because of his/her dump bed, Muck has been referred to as a "digger dumper".
  • 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".
  • Muck is incorrectly listed as male on the Universal Kids site despite being female in the US dub until the Reboot Series in which the channel only aired "Project: Build It" and "Ready, Steady, Build!".
  • Muck so far is the only character whose gender is different in the two English dubs of the show. However it makes more sense for Muck to be a female so Dizzy wouldn't be the only female member of Bob's team. Also being female makes Muck a bit of a tomboy.
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