Muck is a self-loading dump truck who works for The Crotoonian Construction Co.
Muck is the energetic self-loading dump truck of the Crotoonian Construction Company. A strong red machine with a love for getting mucky, "Muck by name, and Muck by nature!" He's friendly, though a little naughty at times, often refusing to take baths (unless he feels like it).
Muck appears to be based on a Caterpillar tracked dump truck with an added bulldozer blade.
Muck is painted all-over red.
- Muck's old design in Crotoonia is a hybrid of his appearance in both the original 'Bob the Builder' series and the reboot. He has the same basic proportions of his original design only he is bulkier and wider and has the dumper hydraulics, like he did in the reboot.
- The design was changed due to Milan not liking the design for Muck and a few other Bob the Builder characters. Muck's current design is a model made by twitter user, HKPorterBEDT (aka The Tuggster Intensifies on YouTube).
- In Crotoonia, Muck is male like he was in the UK dub. However, in the U.S dub of the original series, Muck was portrayed as a female character.