Color: Red
Gender: Male (Female in US version prior to 2015)
Catchphrases: "Muck to the rescue!" and "Let's get mucky!" (original series) and "Oh, wow! I'd love to join in!" (reboot series)
Voiced by: Rob Rackstraw (UK; 1998-2012), Lachele Carl (US; 2001-2009), Sophie Aldred (US; 2010-2012), Paul Panting (UK; 2015-present) and Vincent Tong (US; 2015-present)

Muck is a continuous tracked dump truck with an added bulldozer blade. Muck often acts before thinking and subsequently gets in trouble for it. He is fond of getting dirty, hence the name "Muck". 

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