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"Your worthy Sir Topham Hatt thinks I need to learn. He is mistaken. We Diesels don't need to learn, we know everything. We come to a yard and improve it. We are revolutionary!"
— Diesel, Duck and the Diesel Engine


Dieselpromo
Diesel
  • Class: BR Class 08
  • Designer: British Railways
  • Builder: Crewe, Darlington, Derby, Doncaster, or Horwich Works
  • Configuration: 0-6-0
  • Speed: 15-20 mph
  • Arrived on Sodor: June 1957

"Devious" Diesel is a devious black diesel shunter.

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 rumors 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, realizing that Thomas was blocking his only way home, went to the rescue. Clarabel put in a good word for Diesel, 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 he did in the Railway Series and was sent away, but returned when Duck and Percy needed help at Brendam. 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 mysteriously snuck back to give Mavis advice and taunt Gordon about the triumph of Diesel power on the mainland. 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 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 where he was stationed to work at the Smelters Yard.

Despite remaining tricky and devious, Diesel learned how useful steam engines can be when Thomas brought fresh diesel fuel for him and the other diesel engines and James pushed him back to the Repair Yard when he broke down. However, he tried to convince Gordon that he is old and clapped out, Ben about there was a monster inside a tunnel, and Thomas about the "Curse of the Cliffs" and make him scared at Halloween.

But Diesel proved to have a good side inside him when he told Emily about his record he made for shunting lots of trucks, and proved to Thomas that he didn't ruin the photograph for the billboard on purpose.

Although Diesel made fun of James when he was painted pink, he tried his best to prove himself to be as useful as the steam engines when he took all of the Jobi wood to the Sodor Search and Rescue Centre - only to put himself in danger requiring Thomas to rescue him. However, Diesel tried again to prove how special he is when he took Thomas and Rosie's loads to market and stole James' pigs so that the children could see them. But, it was only when Diesel brought the load of slate for the school that he proved himself Really Useful.

Persona

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. But he does want to be a really useful engine.

Basis

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.

Livery

Diesel is painted in the black livery used by British Railways for shunting engines in the 1950's. His siderods were silver until the sixth season and have been black in every season after.

Trivia

  • According to the magazines and the DVD Bingo game, he and Bulgy are good friends.
  • In season fourteen and parts of season fifteen, Diesel has a different horn sound.
  • Diesel's siderods were originally silver, but were changed to black in the sixth season.
  • Diesel's Lionel's prototype picture in a 2007 catalog was his Season 6 model.
  • In some merchandise lines he is referred to as "Devious Diesel".
  • Diesel has traveled at well over his top speed of 20 miles per hour on numerous occasions.

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