Bertram (formally known as Smudger) is a brown (formerly green) narrow gauge tender engine who used to work on the Mid Sodor Railway and now works on the Skarloey Railway.


Bertram was built sometime in between 1866 and 1888 and arrived on the Mid Sodor Railway in 1897. Back then, he was known as Smudger, who was a show-off. He rode roughly and often came off the rails, because his driver and fireman were alcoholics. In 1901, his driver accidentally pulled the regulator and Smudger ran over and killed a passenger. The passengers wanted him gone. But the manager had sympathy for him, so he decided just to make him useful in another way. So Smudger was put at the back of the sheds and was used as a generator in the spring of 1902. Sometime later in 1926 or 1927, he was stolen and was rebuilt into a brown tank engine and was renamed Bertram. Late one night on October 15th, 1929, his coupling rod snapped but he continued on home regardless. When he reached the Old Iron Bridge, his coupling rod got stuck in the sleepers and he fell on into the ravine. A couple of days later, some men went looking for him but only found the dead bodies of the driver and firemen as Bertram was taken by some workmen of the Mid Sodor Railway the day before. There, he was rebuilt into a tender engine and worked on the Mid Sodor Railway. A few decades later, in 1998, Bertram was found by Toby and was put to work once again on the Skarloey Railway. Later, in 2014, he pushed 10 slate trucks up the incline and they came rolling back into him and he regained all of his memory from before he fell off the old iron bridge and told the other engines of his past. Duke then realised that he was Smudger and chased him around the railway. Sir Handel and Peter Sam followed. When they ended up at the Old Iron Bridge, Bertram tried to commit suicide. Then, Duke realized the error of his ways as Bertram revealed to truth behind his past life. Duke decided to forgive him. They soon became firm friends and traveled back home to celebrate Christmas. In 2016, he joined Duke's reunion with his Ffestiniog siblings, as he was gladly welcomed to the Ffestiniog family. Duke whispered to him, "You know, if I was able to forgive you, I should've known that they would easily forgive me."

Trainz ModelsEdit

Both Bertram and Smudger were made for Trainz 2006 by SI3D.


Bertram is a Small England tender engine, much like Duke and his siblings. This is a redesign, as he was originally based off of the locomotive Dolgoch from the Talyllyn Railway in Wales, much like Rheneas. His redesign basis in 1927 is unknown in real life or he may have been a custom-built engine in other words.


When Bertram first arrived on Sodor as Smudger, he was a very careless and rude engine who had many accidents. The time as a generator, though, gave him time to rethink his careless ways and he became a hard working engine when he was rebuilt. After he lost his memory in 1929, he became very cheerful to the extreme, which often annoyed the others.


The Engines of SodorEdit

Season 1Edit

Season 2Edit

Season 3Edit


Voice ActorEdit

TV AppearancesEdit


Both Bertram and Smudger are two different characters in the TV series. However, they are both similar in that they only appeared in one episode.

Smudger only appeared in the pilot of the fourth season, Granpuff. He appeared in a flashback, and his model was then repainted into Rheneas. It is likely he will never appear again.

Bertram only appeared in the fifth season episode Toby's Discovery, and he did not speak. Duke's model was repainted to create him, and he used Smudger's face. This could explain why he never appeared again. He was supposed to be a tank engine according to Britt Allcroft, but financial difficulty prevented them from creating a new model. However, he was necessary for the story so they modified another character at the last minute. After the events of the fifth season, Bertram's model was later reverted back to Duke.


  • Despite his very brief appearance, Smudger became one of T1E2H3's favorite characters after he resumed watching Thomas on Youtube.
  • In the Railway Series, Smudger's role was used by Stanley (No 2).
  • He is related to both Duke and Rheneas.