Smudger

Smudger is one of the most shortest lived characters in the series. He is only mentioned in the Series 4 story about Duke, where he used as a warning to Stuart and Falcon. He was a showoff who often came off the rails. He was punished by being turned into a generator behind the engine shed.

There is no mention about what happened to the genorator once the mountain railway closed, so it must be assumed that he has died.