Diesel

"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

    Diesel  "Devious" Diesel is a devious Diesel shunter.
 * 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

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 boots 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 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 yet again. Amazingly, Diesel was not sent back this time round, and has remained on the North Western Railway.

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.

Diesel was also one of the Diesels that took over the Sodor Steamworks. He later teased Flynn for just standing around and doing nothing.

Diesel was annoyed when Percy thought he was the Monster of Brendam and later teased Thomas for being a stinky engine and teased Gordon when he was fitted with a yellow and black Diesel bufferbeam. When he and Percy collected a calliope, he thought Percy would not be able to make it play, but was surprised when he did.

Although unconfirmed, it can be assumed that Diesel is now a permanent resident of Sodor.

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.

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 1950s. His siderods were silver until the sixth season and black every season after.

Appearances
{{Scroll box|

Railway Series

 * Duck and the Diesel Engine
 * The Little Old Engine (mentioned)
 * Thomas and the Evil Diesel

Television series

 * Season 2 - Percy Takes the Plunge (cameo), Pop Goes the Diesel, Dirty Work, A Close Shave (mentioned), and Thomas and the Missing Christmas Tree (cameo)
 * Season 3 - Gordon and the Famous Visitor (cameo), Thomas, Percy and the Dragon (cameo), Diesel Does it Again, Mavis, Tender Engines, and Escape (cameo)
 * Season 4 - Rock 'n' Roll (mentioned) and Rusty to the Rescue (cameo)
 * Season 6 - The World's Strongest Engine
 * Season 7 - Fergus Breaks the Rules
 * Season 8 - Thomas to the Rescue, Squeak, Rattle and Roll and James Goes Too Far (does not speak)
 * Season 9 - Respect for Gordon, Bold and Brave, and Flour Power
 * Season 10 - Emily and the Special Coaches and Thomas and the Shooting Star (mentioned)
 * Season 11 - Don't be Silly, Billy (does not speak) and Thomas and the Stinky Cheese
 * Season 12 - Thomas and the Billboard and Don't Go Back
 * Season 13 - Tickled Pink, Percy's Parcel (cameo), A Blooming Mess (cameo), and Thomas and the Runaway Kite (cameo)
 * Season 14 - Thomas' Tall Friend (cameo), James in the Dark (cameo), Toby and the Whistling Woods (cameo), Diesel's Special Delivery, Victor Says Yes (cameo), Thomas in Charge (cameo), Thomas' Crazy Day (cameo), O the Indignity, and Jitters and Japes (cameo)
 * Season 15 - Surprise, Surprise (cameo), Stuck on You (cameo), Tree Trouble, and Fiery Flynn
 * Season 16 - Percy and the Monster of Brendam, Thomas and the Rubbish Train, Bust My Buffers!, Percy and the Calliope, and Emily's Winter Party Special (cameo)

He also cameoed in two fifth season songs.

Specials:
 * Calling All Engines!
 * The Great Discovery (cameo)
 * Hero of the Rails (cameo)
 * Misty Island Rescue
 * Day of the Diesels

He is also likely to appear in the upcoming WWII movie.

He was going to appear in Edward, Trevor and the Really Useful Party, but his scene was cut out for unknown reasons.

Magazine stories
}}
 * 1990 - One Bump Too Many
 * 1993 - Roof Repairs!
 * 1994 - A Special Treat!
 * 1995 - Watch Out, Gordon! (does not speak)
 * 1996 - Percy Saves the Day and Thomas Takes a Ride! (does not speak)
 * 1997 - Percy's Puzzling Trip!, Diesel and the Trucks, and Diesel Becomes a Coach
 * 1998 - Runaway Percy!
 * 2000 - Back to Front!
 * 2001 - A Special Story About Diesel and Diesel Day! (does not speak)
 * 2005 - Perfect Percy and Snow Drop
 * 2006 - Shower Power and Well, well!
 * 2010 - Disgusted Diesels, Creepy Causeway (cameo), and Proud Puffers (cameo)
 * 2011 - Monster Mistake, Musical Trucks, The Treasure Hunt, (cameo), Scaredy Cat, Tickled Pink (mentioned), and O, the Indignity (does not speak)
 * 2012 - Bubbling Boiler

Voice Actors

 * Kerry Shale (UK; thirteenth season onwards)
 * Michael Brandon (US; thirteenth season onwards)
 * Daisuke Gōri (Japan; Seasons 2 and 3)
 * Hisao Egawa (Japan; Seasons 6 - 8)
 * Ken Sanders (Japan; Season 9 onwards)
 * Christoffer Staib (Norway; thirteenth season onwards)

Trivia

 * According to the magazines, he and Bulgy are good friends.
 * In season fourteen and parts of season fifteen, Diesel had a different horn sound.
 * Diesel's siderods were originally silver, but were changed to black in the sixth season.
 * In some merchandise lines he is referred to as "Devious Diesel".

Merchandise

 * ERTL (discontinued)
 * Wooden Railway (normal in two versions, oil splattered, battery powered, and bronze)
 * Take-Along (normal, metallic, and in playscene; discontinued)
 * TOMY/TrackMaster
 * My First Thomas
 * Bachmann
 * Hornby
 * Lionel
 * My Thomas Story Library (discontinued)
 * Bandai Tecs
 * Tomica
 * Take-n-Play (normal and pull back)
 * De Agostini
 * Brio (discontinued)
 * Mega Bloks
 * Discover Junction