Smudger is a narrow-gauge tank engine.
Smudger was a reckless narrow gauge engine who rode roughly and often derailed. He was a hazard to the other engines, so the manager decided to make him more useful by turning him into a generator at the back of the engine shed.
According to Duke, Smudger was a showoff who rode roughly and often came off the rails. Duke tried to warn him to be careful, but Smudger never listened to his advice. He was finally punished by being turned into a generator and being put behind the engine shed.
No information was given about his fate once the Mid Sodor Railway closed, so it must be assumed that he has either remained there . He is now good friends with Sunny.
Smudger was a complete showoff, and often came off the rails, but refused to listen to advice. Duke warned him to be careful, but he took no notice until he was put in his place by being turned into a generator.
BasisEditSmudger is a Fletcher Jennings 0-4-0, recycled from Rheneas' model.
- Smudger's model was then repainted into Rheneas' model. His face was later used for Bertram.
- Smudger is the first character in the television series to not originally come from the Railway Series. However, his role is partially based on that of Stanley from the book Duke the Lost Engine.