Whiff is a smelly tank engine who works with Scruff at the rubbish dump.
- Take-n-Play version (uni-polar magnets, made in China) (2010-2012)
- Adventures/Collectible Railway version (hook and loop couplings, shorter cab, unpainted buffers, made in Thailand) (2015-present - Europe/Asia) (2017-present - US/UK)
- Whiff's Messy Day (more detailed chassis, made in Thailand) (Take-n-Play)
- Whiff's Banana Blooper (Take-n-Play)
- Smelly Whiff from Sodor's Green Team (shorter cab, unpainted buffers, bi-polar magnets) (Take-n-Play)
- Smelly Whiff from Clean-Up Crew (Adventures)
- The prototype Collectible Railway Whiff featured painted buffers.