Whiff is cheerful and optimistic. He enjoys his job of collecting rubbish and working at the waste dump with Scruff. He doesn't seem to care what the other engines think about him: either that or he is oblivious to their opinions. Despite that, he is friendly and always does his job well.
He is based on Aerolite, a 2-2-4 tank engine of the North Eastern Railway.
- The Jinxed Station (cameo)