Scruff is a grubby little chap, with a lime green boxy shape. He is more than content with "scrunching" and shunting rubbish trucks at the waste dump with Whiff and has few other aspirations. He has been known to run in fear and hide away from things that he does not quite understand and can find having all the focus on him a little daunting. It seems, at times, that Scruff would rather be busily working in the background. However, he is cheerful to welcome engines to the waste dump and happy to have others join in with the "scrunching".
Scruff is an 0-4-0VBT tank built by the Sentinel Waggon Works.