"Devious" Diesel, as his name implies, is a sinister diesel shunter and the first diesel engine to arrive on Sodor who originates from the Other Railway.
Bio in the Railway Series
When Diesel came on trial to the North Western Railway, Duck was asked to show him around. Duck was unimpressed by Diesel's claims of being "revolutionary" and left him to his own devices. As a result, Diesel was made into a laughing stock by the trucks for trying to pull some rusty old trucks and failing spectacularly and Diesel blamed Duck for not helping him. Diesel swore a vendetta and spread rumours that Duck had given the big engines rude nicknames. Duck was sent to Wellsworth pending an inquiry into the matter, but Diesel got too big for his buffers and tried telling lies about Henry. He was found out and sent home in disgrace.
Several years later, Diesel was brought back to help on Thomas' Branch Line whilst Percy was being repaired. Diesel tried to win Thomas and Toby over, without success and after he destroyed several trucks he was to be sent away. However, on his day of departure, Clarabel slipped on oily rails left by Daisy and came off at some points near Dryaw. Diesel, realising that Thomas was blocking his only way home, went to the rescue. Clarabel put in a good word for him and Diesel, although he returned to the Other Railway, is always welcome on Sodor.
Bio in the Television Series
Diesel first arrived on Sodor in the same way as he did in the Railway Series and was sent away for spreading rumours about the big engines, but returned when Duck and Percy needed help at Arlesburgh Harbour. Diesel proved to be as bad as ever and was sent away for good after shunting some trucks of china clay into the sea, but he somehow mysteriously sneaked back to give Mavis advice, taunt Gordon about the triumph of diesel power on the Mainland and shunt trucks in the Shunting Yards. It is possible that these events happened during Diesel's stay or that Diesel returned at some point with goods from the Mainland.
When Henry was derailed by some trucks, Diesel was brought back as a last resort to do his goods work, but his attempt to prove his worth resulted in him falling in a barge and he was sent back to the Mainland yet again.
Later on, Diesel returned yet again, this time to assist Fergus at the Sodor Cement Works. Diesel became jealous of Fergus' reputation as the "pride of the Cement Works" and concocted a scheme to make Fergus run away. Diesel was partially successful - he managed to make Fergus abandon his post for a time - but was ultimately foiled. Amazingly, Diesel was not sent back this time round and remained on the North Western Railway.
Diesel is, in essence, the average pantomime villain. He is oily, malicious, devious, scheming and full of ideas to get revenge. It appears Diesel has a good side in him, but one would still have to look deep to find it.
Diesel is a BR Class 08 0-6-0. Over seventy members of this class survive today in preservation. They were in fact the most successful shunting engines in the world, with 996 of them built.
Diesel is painted in the British Railways' black livery. His livery originates from British Railways in the 1950s, during the time when all shunting engines were painted black. His side rods were silver until the sixth season and have been black in every season after.
- Daisuke Gōri (Japan)
- Diesel was the first diesel to be introduced in both the Railway Series and television series.
- In some merchandise lines he is referred to as "Devious Diesel".
- Diesel has had a few modifications in the television series:
- Season 6:
- His side rods changed from silver to black.
- His brake pipe began facing upwards.
- Season 6: