Is there an issue? Send a MessageReason:
Trope was cut/disambiguated due to cleanup
Deleted line(s) 64 (click to see context) :
* KickTheSonOfABitch: Sometimes Diesel's heckling is directed towards haughty engines or even ones that bite first. FantasticRacism is a prominent issue among many steamies and diesels, Diesel's just one of the worst cases.
Is there an issue? Send a MessageReason:
None
Changed line(s) 144,147 (click to see context) from:
* Omnicidal Maniac: Despite being a THOMAS THE TANK ENGINE villain, Diesel 10 is actually shown to be cataclysmic. This quote says all you need to know:
''"Diesel 10: Hello, Twinkle Toes! Remember me? Fat Hatt won't have much use for you, looking like THAT! (evilly cackles) Oh, I see you forgot to bring the sugar. How careless of you. Say hello to Pinchy! (evilly cackles while grabbing Mr. Conductor with his claw, then taking him to the viaduct while still cackling) Okay, Twinkle Toes. I know about the buffers.
Mr. Conductor: That's what I saw in my dream, it's coming true! [...] My universe is starting to crumble...
Diesel 10: And I know about the magic railway! And when I find that engine, you and all those PUFFBALLS...will be history!"''
''"Diesel 10: Hello, Twinkle Toes! Remember me? Fat Hatt won't have much use for you, looking like THAT! (evilly cackles) Oh, I see you forgot to bring the sugar. How careless of you. Say hello to Pinchy! (evilly cackles while grabbing Mr. Conductor with his claw, then taking him to the viaduct while still cackling) Okay, Twinkle Toes. I know about the buffers.
Mr. Conductor: That's what I saw in my dream, it's coming true! [...] My universe is starting to crumble...
Diesel 10: And I know about the magic railway! And when I find that engine, you and all those PUFFBALLS...will be history!"''
to:
* Omnicidal Maniac: {{Omnicidal Maniac}}: Despite being a THOMAS THE TANK ENGINE villain, Diesel 10 is actually shown to be cataclysmic. This quote says all you need to know:
''"Diesel 10: '''Diesel 10:''' Hello, Twinkle Toes! Remember me? Fat Hatt won't have much use for you, looking like THAT! (evilly cackles) Oh, I see you forgot to bring the sugar. How careless of you. Say hello to Pinchy! (evilly cackles while grabbing Mr. Conductor with his claw, then taking him to the viaduct while still cackling) Okay, Twinkle Toes. I know about the buffers.
Mr. Conductor: '''Mr. Conductor:''' That's what I saw in my dream, it's coming true! [...] My universe is starting to crumble...
Diesel 10: '''Diesel 10:''' And I know about the magic railway! And when I find that engine, you and all those PUFFBALLS...will be history!"''
Is there an issue? Send a MessageReason:
None
Added DiffLines:
* Omnicidal Maniac: Despite being a THOMAS THE TANK ENGINE villain, Diesel 10 is actually shown to be cataclysmic. This quote says all you need to know:
''"Diesel 10: Hello, Twinkle Toes! Remember me? Fat Hatt won't have much use for you, looking like THAT! (evilly cackles) Oh, I see you forgot to bring the sugar. How careless of you. Say hello to Pinchy! (evilly cackles while grabbing Mr. Conductor with his claw, then taking him to the viaduct while still cackling) Okay, Twinkle Toes. I know about the buffers.
Mr. Conductor: That's what I saw in my dream, it's coming true! [...] My universe is starting to crumble...
Diesel 10: And I know about the magic railway! And when I find that engine, you and all those PUFFBALLS...will be history!"''
''"Diesel 10: Hello, Twinkle Toes! Remember me? Fat Hatt won't have much use for you, looking like THAT! (evilly cackles) Oh, I see you forgot to bring the sugar. How careless of you. Say hello to Pinchy! (evilly cackles while grabbing Mr. Conductor with his claw, then taking him to the viaduct while still cackling) Okay, Twinkle Toes. I know about the buffers.
Mr. Conductor: That's what I saw in my dream, it's coming true! [...] My universe is starting to crumble...
Diesel 10: And I know about the magic railway! And when I find that engine, you and all those PUFFBALLS...will be history!"''
Is there an issue? Send a MessageReason:
Trope was cut/disambiguated due to cleanup
Deleted line(s) 57 (click to see context) :
* GutturalGrowler: When voiced by Michael Brandon and Martin Sherman, Diesel has a gruff-sounding voice.
Is there an issue? Send a MessageReason:
Creating a new page to list the diesels who live here.
Added DiffLines:
[[WMG:[[center: [-''WesternAnimation/ThomasAndFriends'' [[Characters/ThomasAndFriends character index]]\\
[[Characters/ThomasAndFriendsTheSteamTeam The Steam Team]] | '''The Diesels''' | [[Characters/ThomasAndFriendsLittleWesternAndArlesdale Little Western and Arlesdale]] | [[Characters/ThomasAndFriendsSkarloeyRailway Skarloey Railway]] | [[Characters/ThomasAndFriendsForeignEngines Foreign Engines]] | [[Characters/ThomasAndFriendsSecondaryCharacters Secondary Characters]] | [[Characters/ThomasAndFriendsNonRailCharacters Non-Rail Characters]] | [[Characters/ThomasAndFriendsRollingStock Rolling Stock]] | [[Characters/ThomasAndFriendsHumans Humans]] ]]]] -]
----
[[foldercontrol]]
[[folder:Diesel]]
[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/disappearingdiesels99.png]]
[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/dieselmodel.png]]
-->''"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!"''
--> Voiced in English by: Michael Brandon (US; Series 13-16), Creator/MartinSherman (US; ''King of the Railway'' - Season 18), Creator/KerryShale (UK; Series 13 - 24, US; Series 19 - 24)
--> Voiced in Japanese by: Creator/DaisukeGori (Series 2 - Series 8, excluding Series 6), Creator/HisaoEgawa (Series 6), Ken Sanders (''Calling All Engines!'' - Series 24), Shinichi Ishihara (singing voice)
--> Voiced in Latin American Spanish by: Jorge Ornelas (Series 13 - Series 24)
--> Basis: British Railways Class 08 0-6-0DM
--> Built: 1952
The first diesel to visit the Island of Sodor, Diesel believes that diesels are better than steam engines, and wanted to "revolutionize" Sodor. He left and came back several times before becoming a permanent part of the railway.
* AdaptationalEarlyAppearance: In the books, he came on Sodor just after City of Truro left. Here, Diesel appears before Truro visited.
* AdaptationalVillainy: In the books, Diesel was merely a pompous bully, and, after one return to Sodor, managed to redeem himself. In the series, he returned permanently, though proved as nasty as ever, and gleefully bent on [[FantasticRacism having all steamies sent to the scrapyard]]. He tamed closer to the books' version in the [=HiT=] seasons.
* AesopAmnesia: No matter how many times he learns about being nice to other engines, he'll soon return to his bullying ways.
* AlliterativeName: His name in the marketing, '''D'''evious '''D'''iesel.
* AntiHero [=/=] AntiVillain: In rare instances, he's portrayed as an engine that ''wants'' to do good work and be recognized for his talents, but doesn't know the right way to do so and ends up hurting or upsetting others.
* ArchEnemy: Though antagonistic to almost everyone, he seems to direct most of his enmity and rivalry towards Thomas in the HIT seasons. His main enemy in his initial appearances was Duck.
* ArcVillain: Of the three-episode arc with Duck as the main protagonist: "Pop Goes the Diesel", "Dirty Work", and "A Close Shave", though he doesn't appear in the last one.
* AscendedExtra: He appeared in one novel of ''Literature/TheRailwaySeries'' and a standalone story by Christopher Awdry. In the show (especially in later HIT seasons), he makes regular appearances and is a key antagonist.
* AttackHello: At least in "Springtime for Diesel", his way of saying "hello" is by deliberately bumping into other engines.
* BitchInSheepsClothing: He isn't above pretending to be a NiceGuy, especially when he's in the [[ManipulativeBastard manipulative]] mood. In his debut episode "Pop Goes the Diesel" for instance, he effortlessly charms the other engines into believing he's a NiceGuy. He soon then reveals his true colours, though.
* TheBully: What he becomes in the new series. He gets enjoyment of heckling and harassing other engines, especially steam engines.
* CardCarryingJerkass: HiddenHeartOfGold and PetTheDog moments aside, Diesel proudly admits in "Diesel and the Ducklings" that he's a {{Jerkass}}.
-->'''Emily:''' Stop being so horrid Diesel.
-->'''Diesel:''' I'll be just as horrid as I like.
* CardCarryingVillain: He admits he's a bad engine during "[[VillainSong I'm Full of Surprises]]" and once stated [[MeaningfulName there's a reason]] he's called [[AlliterativeName Devious Diesel]].
* CharacterDevelopment: Subtle example. From the early Hit episode "Thomas To The Rescue", Diesel drifts from being a DarkMessiah bent on scrapping steamies to more just a petty Jerkass who can show ''some'' begrudged respect for steamies like Thomas. The CGI series increasingly conveys Diesel as more just an insecure bully who wants recognition but can't let go of old grudges.
* DarkMessiah: In his first episode, he comes to Sodor preaching the diesel revolution.
** Touched on lightly again in ''Blue Mountain Mystery'' where after hearing of Luke's DarkAndTroubledPast, he convinces Paxton that Luke is dangerous and must be gotten rid of.
* DependingOnTheWriter: Either a ManipulativeBastard or a brutish bully, with his methods being either out of unsympathetic spite or because he felt he was wronged.
* DevilInPlainSight: He's the most ObviouslyEvil character among the recurring cast, is willing to ruin jobs for glory or petty revenge, and any hint of possible reformation is gone by the next episode, yet he's still is allowed to live and work on the railway.
* DisproportionateRetribution: When not picking on engines [[ItAmusedMe for mean laughs]], he's often committing this. As he lampshades in "Springtime For Diesel" the steam engines aren't particularly nice to him either, but what meanness they can give he can surpass ten fold. The most iconic being in his first appearance where, after Duck let him humiliate himself for being a pompous kiss-ass, Diesel spread MaliciousSlander to try and get him booted off the railway.
* DoesNotKnowHowToSayThanks: In "Disappearing Diesels". He settles for a [[TheUnSmile friendly smile]] instead.
* ADogNamedDog: A diesel named Diesel.
* EstablishingCharacterMoment: In his introductory episode, in which after smoothly flattering all the other engines, he says the above quote to Duck about how diesels "don't need to learn" and are "revolutionary".
* EvenEvilHasStandards: Diesel is no saint himself, but even he was repulsed in "Blue Mountain Mystery" after he learnt that [[spoiler: Luke seemingly killed another engine]].
* EvilBrit: In later seasons of the U.S. dub, Diesel speaks in a bit of a [[UsefulNotes/BritishAccents Cockney accent]]. There's also a good reason they call him devious.
* EvilCounterpart: He's just as iconic as Thomas in the show, but for all the wrong reasons and sees the blue tank engine as his ArchEnemy.
** He even sings a warped version of the [=BWBA=] theme during his ImagineSpot where he imagines him doing a HostileShowTakeover.
* EvilCannotComprehendGood: He couldn't understand why Paxton would help him after one of his pranks, nor could he comprehend Daisy and Harvey's OddFriendship (Which [[{{Irony}} he himself instigated]])
* EvilIsPetty: He's fond of [[KickTheDog dog-kicking]] and {{Disproportionate Retribution}}s, never mind his FantasticRacism. However, Diesel can [[PragmaticVillainy restrain himself]], at least when the Fat Controller is nearby.
* EvilWearsBlack: He has black paint and is one of the most malicious characters in the series.
* FantasticRacism: Not initially, but after the Classic series, it's made clear Diesel thinks lowly of steam engines.
* {{Flanderization}}: Diesel saw diesels as revolutionary originally, but it was not his main vendetta against the steam engines, and he was rather shrewd and manipulative in his antics. Shortly into the TV made episodes however, Diesel became a more outspoken bully and exaggeratedly racist towards steamies. The current episodes seem to be toning him back down, even if he is still a much more obnoxious heckler than initially.
* FreudianExcuse: He discusses it in "Springtime for Diesel", saying how he doesn't feel that he should be nice to engines who aren't nice to him; evidently, on some level he's very well aware of how unfriendly he is, but is hurt by the fact that the other engines don't give him a chance to redeem himself, so he continues being mean [[ThenLetMeBeEvil since that's apparently what they expect of him]].
* FreudianExcuseIsNoExcuse: What was [[spoiler: Daisy]]'s response to learning about Diesel's FreudianExcuse? NoSympathy.
* GutturalGrowler: When voiced by Michael Brandon and Martin Sherman, Diesel has a gruff-sounding voice.
* TheHeckler: Sure to be found making fun of whatever the spotlighted engine is doing, often triggering their insecurities, particulary Gordon in, "Respect For Gordon".
* HiddenHeartOfGold: Played with in "Diesel and the Ducklings". He thinks that diesels should be rough and tough, but shows his soft side towards some ducklings.
* ItsAllAboutMe: He often chooses to do things based on his own selfish desires, while ignoring how his fellow engines will be affected by it.
* {{Jerkass}}: The most prominent one of the show as he is rude, bullying, and manipulative.
* JerkWithAHeartOfGold: Heavy on the "Jerk" part as he's a rude, [[ManipulativeBastard manipulative]], [[ItsAllAboutMe selfish]], and devious FantasticRacist. Still, he tends to get a [[PetTheDog softer moment]] roughly OnceASeason (e.g. "Diesel's Special Delivery", and in the Arc-animated episodes "Diesel and the Ducklings" and "Springtime for Diesel") and he shows VillainRespect when he feels like it. It's also implied in "Disappearing Diesels" that he simply doesn't know how to be nice, even if he tries.
* JokerImmunity: A G-rated example. In contrast to his ''Railway Series'' counterpart (who was sent packing the moment the Fat Controller could deduce he was the one spreading lies in the yard), Diesel is never sent away again or receives any severe punishment, despite all of the trouble he causes with no sign of reformation.
* KarmaHoudini: A PlayedWith one. Diesel usually gets hit with LaserGuidedKarma whenever he does something bad. However, he's still allowed on Sodor despite his terrible track record (and having been sent away multiple times).
* KickTheSonOfABitch: Sometimes Diesel's heckling is directed towards haughty engines or even ones that bite first. FantasticRacism is a prominent issue among many steamies and diesels, Diesel's just one of the worst cases.
* KindnessBall: In "Diesel's Special Delivery", he's inexplicably nice and doesn't brag about his superiority over steam engines.
* ManipulativeBastard: Renowned for this, most infamously in his debut, he tells jokes about the big engines to the trucks, and tells them that Duck shared them with him. Once the trucks starts laughing at the other engines, they're convinced Duck had been spreading nasty jokes about them. Despite being found out and punished, he still somehow manages to smooth talk engines into trusting him (eg. convincing a lonely Percy into helping the Dieselworks in "Day Of The Diesels", or sweet talking Mavis into doing odd jobs in "Thomas The Quarry Engine"). He notes the other engines distrust of newcomer Sonny, and manipulates him into doing his jobs as he pretends to be friendly with the new engine.
* MeaningfulName: [[AlliterativeName Devious Diesel]], befitting of his conniving persona.
* MyGodWhatHaveIDone: Diesel has experienced this several times. For example, [[spoiler: he is sincerely remorseful when he thinks he damaged Daisy beyond repair after giving her a teasing biff in "Springtime For Diesel"]].
* MythologyGag: Though the TV series never adapted ''Thomas and the Evil Diesel'' proper, the premise of Diesel becoming an occasional FriendlyEnemy to Thomas got used recurrently from the HIT era onwards.
* NeverMyFault: [[CantTakeCriticism Hates being reprimanded for his mistakes]], and will always find a way to shift the blame onto other engines. This gets especially bad in season 23's "Diesel Do Right" where after he's punished by the Fat Controller for not doing his job correctly, rather than own up to his failure and work harder, he decides to trick Rebecca into doing the other diesels' jobs wrong.
* NiceMeanAndInBetween: Of the three diesels introduced in Season 2, he's the Mean to [=BoCo's=] Nice and Daisy's In-between. He's bullying and manipulative and plotted to have Duck sent away from Sodor.
* ObviouslyEvil: In the Mitton directed seasons anyway. While the books left it more imagination, the show version's devious smile, sinister Leitmotif and shady voice over from the narrator leave little doubt from the first time he's shown that he probably isn't a NiceGuy.
* OffscreenKarma: In "A Close Shave" where the Fat Controller found out about his lies about Duck telling names about the other engines and sent him away to the other railway. Averted in "Diesel Does It Again" and most later episodes where Diesel is seen getting his comeuppance for causing trouble.
* OutOfCharacterMoment: "Diesel's Special Delivery", in which Diesel broods over not getting clapped and cheered by children as much as James does.
* PetTheDog: One episode per season, before he snaps back into his usual devious and abrasive personality.
* PsychoticSmirk: His default expression whenever he's up to no good is an evil-looking smirk. He's even doing it in one of the above pictures.
* RedAndBlackAndEvilAllOver: He's got red buffers, [[EvilWearsBlack black paint]], and a malicious nature.
* RedBaron: In promotional material, he is often referred to as "Devious Diesel". Within the show itself, this nickname is rare, but not completely unheard of.
* ShipTease: He has some with Daisy in season 21. In "Springtime for Diesel", he feels guilty about bumping her and admits that he likes her while she's (pretending to be) asleep at the Dieselworks, and made a genuine effort to become her friend. At one point in "A Most Singular Engine", he blushes as he says her name.
* SmallNameBigEgo: He's extremely egotistical, cocky and strongly believes that the diesels are far superior than the steam engines.
* SmugSnake: Especially in later CGI episodes. While Diesel is a fine schemer and ManipulativeBastard, he is quite cocky and not as clever as he thinks he is. The original version of the song "Troublesome Trucks" even indirectly calls him out on the latter. Special note goes to [[spoiler: "Diesel Glows Away" in which he underestimates Nia's intellect. Also, she and Paxton trick him into falling for his very own trick (although he at least later deduced that they tricked him)]].
* TeamRocketWins:
** Sometimes gets to pull specials and look splendid at last. "Diesel's Special Delivery" for example.
** "The Railcar and the Coaches" also ends with him temporarily taking over Thomas' branch line after Annie and Clarabel trick Daisy.
** Perhaps the most pronounced example is "The Big Freeze", where the lack of coal means diesels are left taking over jobs on the railway. For an extra touch Diesel finds Thomas has stranded himself at a station out of carelessness. In a surprising case of WhatYouAreInTheDark however, rather than savouring his dream of overthrowing the steamies, [[PetTheDog Diesel goes and gets the delivery of coal and is treated as a hero.]]
* ThenLetMeBeEvil: In a few cases, including his first appearance, Diesel will make a halfway attempt to be friendly and helpful, but either his bad reputation or oily manner of doing so will lead him to get brushed off, and him to usually revert back to his old nasty habits in retaliation. As he sulks in "Springtime For Diesel" he doesn't feel the need to be nice when he doesn't feel anyone is nice to ''him''.
* UngratefulBastard: When Duck [[BigShutUp stands up for Diesel]] when the trucks were [[TheVillainSucksSong singing a rude song]], he blames Duck for, ahem, 'making the trucks laugh at him'.
* VillainousBreakdown: While they vary in intensity, Diesel is prone to losing his cool whenever his plots fail, of note is his "Hugh, GURR, SMOOOARR", growling in Pop Goes The Diesel.
* VillainRespect: He occasionally displays some begrudged respect for some engines, like [[ArchEnemy Thomas]].
* VillainWithGoodPublicity: He managed to get James, Gordon, and Henry on his side in "Dirty Work" when he spread lies about them to the Troublesome Trucks and pinned the blame on Duck. Diesel had made a good first impression on them by complimenting them when he first visited Tidmouth Sheds in his debut episode, "Pop Goes the Diesel".
* VisionaryVillain: Started off as one, with it returning every now and then.
--> '''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!"
[[/folder]]
[[folder:Diesel 10]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/maindiesel10cgi.png]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/maindiesel10model.png]]
-->''"I can do whatever I want! I'll get him, too! With Pinchy!"''
--> Voiced in English by: Keith Scott (''Thomas and the Magic Railroad'', workprints only), Creator/NeilCrone (''WesternAnimation/ThomasAndTheMagicRailroad''), Rupert Degas (''Misty Island Rescue'' and ''Day of the Diesels'', original cut only), Matt Wilkinson (''Misty Island Rescue'' - Series 17)
--> Voiced in Japanese by: Ginzo Matsuo (''Thomas and the Magic Railroad''), Creator/KiyoyukiYanada (''Calling All Engines''), Creator/TakayaKuroda (''Misty Island Rescue''), Ryota Yamasato (''Day of the Diesels''), Yohei Nishina (Series 17)
--> Voiced in Latin American Spanish by: Luis Alfonso Padilla (''Thomas and the Magic Railroad''), Creator/MiguelAngelGhigliazza (''Thomas and the Magic Railroad'', TV version), Creator/GerardoReyero (''Misty Island Rescue'' - Series 17, excluding ''Day of the Diesels''), Creator/EduardoGarza (''Day of the Diesels'')
--> Basis: British Railways Class 42 'Warship'
The main antagonist of ''WesternAnimation/ThomasAndTheMagicRailroad'' and ''WesternAnimation/DayOfTheDiesels''. A large warship diesel with a mechanical claw on his roof, he was out to destroy Lady and Mr. Conductor, but was defeated thanks to Thomas. He has returned several times in the show's run as a permanent part of the railway.
* AffablyEvil: By the time of ''Day of the Diesels'' where his evil ways are mostly put on the wayside in favor of him being [[JerkWithAHeartOfGold rude and vicious-tempered]], but [[WellIntentionedExtremist just trying to look out for his diesel brethren]], whom he sees as neglected.
* BadBoss: Is a mild example of this. In ''Thomas and the Magic Railroad'', he tries to put Splatter and Dodge in their places by teaching them "how to stop being stupid", only to get coal dumped all over him.
* BigBad: Diesel 10 is this in both ''WesternAnimation/ThomasAndTheMagicRailroad'' and ''WesternAnimation/DayOfTheDiesels''.
* BrooklynRage: In TheMovie, Diesel 10 speaks in a rough and angry New York accent. He also caused Lady to crash, unapologetically tries to kill James, Lady and Thomas, and he nearly dropped Mr. Conductor off a viaduct. This oddly contrasts to his much smoother EvilBrit voice in later appearances.
* TheBrute: Along with being the BigBad of at least two features, Diesel 10 is this among the diesels; being a very large and very strong [[https://en.wikipedia.org/wiki/British_Rail_Class_42 Class 42 Warship]] locomotive with a dangerous hydraulic claw arm.
* ButtMonkey: He gets his immediate comeuppance in at least three scenes of ''Magic Railroad''; one in which his claw malfunctions, another where he gets coal dumped all over him, and finally being defeated by falling off a collapsing viaduct into a [[TrashLanding barge full of old boiler sludge]].
* CartoonCreature: While he ''is'' based on a real locomotive type (albeit shortened in length), Diesel 10's hydraulic claw is purely a fantasy creation with little-to-no practical use. In fact, such a modification is actually a ''breach of regulations'', since not only is it illegal to modify locomotives with additional moving parts, but it would also make him unable to fit through standard-height tunnels.
* CheatedAngle: In the model series, his nose is tilted more towards his left eye. This was averted when the CGI series came, which moved it more to the middle of his face.
* DemotedToExtra: He has disappeared from the series after season 17's "The Missing Christmas Decorations", for reasons unknown. Although, Pinchy does appear in an ImagineSpot in season 22's "What Rebecca Does", and Mattel still sees him as a lucrative character, seeing as he's merchandised to death despite not being on the show all that often.
* DependingOnTheWriter: He's either an evil, [[FantasticRacism dieselist]] brute who is out to destroy all steam engines, or simply a rude JerkWithAHeartOfGold who doesn't like "steamies" all that much but is still willing to help out when it counts; and moreso when he can get something out of it for himself, or for the other diesels.
* DevilInPlainSight: The steam engines all can tell he's clearly evil, but the Fat Controller keeps him around for reasons unknown. [[DownplayedTrope Downplayed]] in the series, where he is still a devious schemer, but his attitude leans more towards {{Jerkass}}/JerkWithAHeartOfGold than than just outright evil.
* DisneyVillainDeath: Not a death per se, but his defeat in ''Magic Railroad'' is brought around by falling off of a collapsing viaduct; though he's saved by [[TrashLanding falling into a passing barge full of boiler sludge]].
* ADogNamedDog: He's a diesel whose name is Diesel, but he has a number to distinguish himself from the ''other'' two Diesels. Thomas lampshades said number in ''Magic Railroad'' by describing him as "Ten out of ten for devious deeds and brutal strength".
* TheDreaded: Right from his first appearance, Diesel 10 has this reputation among the other engines. Even when his villainy is considerably toned down later on, Thomas is terrified at the prospect of asking him for help in ''Calling All Engines!'', and [[LargeAndInCharge most of the other diesel engines firmly answer to him]].
-->'''Gordon:''' (''shuddering in fear'') D-Diesel 10's back!
-->'''Thomas:''' Yes, ten out of ten for devious deeds and brutal strength. The blast from the past who hates steam engines!
* EstablishingCharacterMoment: In TheMovie, he roars through as station, kicking up dust shouting "Get outta my way! I have unfinished business here and I wanna finish it FAST!". He also leaves ''[[TheBigGuy Gordon]]'', of all engines, shaking in fear.
* EvilBrit: In the US dub of the television series, he speaks in a smooth, sinister British accent due to him keeping his voice from the UK series.
* EvilCounterpart: To P. T. Boomer in ''Thomas and the Magic Railroad'', who serves as the Shining Time counterpart of Diesel 10. However, the two are both evil.
* EvilLaugh: Has an impressive one, but it tends to be subverted due to it often ending with him getting into a coughing fit from his own diesel fumes.
* FauxAffablyEvil: Diesel 10 is firmly this in ''Thomas and the Magic Railroad'', where he often strikes up conversations in a faux-friendly tone with his would-be victims as he's attacking them. One good example of it is when he captures Mr. Conductor with Pinchy and threatens to drop him off a high viaduct if he doesn't tell him where the magic buffers are in short order:
-->'''Diesel 10:''' Hello, Twinkle Toes! Remember me? Fat Hatt won't have much use for you looking like that. (''laughs cruelly'') [[CallBack Ah, I see you forgot to bring the sugar. How]] ''[[CallBack careless]]'' [[CallBack of you!]] (''grabs Mr. Conductor as he tries to flee'') Say hello to Pinchy!
* ForTheEvulz: Dumping sneezing powder all over Tidmouth Sheds Yards has got to be this.
* GambitRoulette: His plans in ''Day of The Diesels'' rely on circumstances he could have hardly picked out.
* GracefulLoser: His reaction to falling into a barge of sludge?
-->'''Diesel 10:''' (''slowly realises he's okay'') Huh. Ah, well... nice time of year for a cruise. (''[[LaughingAtYourOwnJokes chuckles to himself sadly]]'')
* ICallItVera: He calls his hydraulic claw "Pinchy".
* JerkWithAHeartOfGold: Diesel 10's characterization in ''WesternAnimation/CallingAllEngines''. It's also evident to a lesser extent in his later appearances; he's still a bullying troublemaker who maintains his reputation as TheDreaded, but he cares a lot deep down for his diesel brethren -- whom he sees as neglected compared to the steam engines -- and [[WellIntentionedExtremist commits a good portion of what he does for their benefit]].
* LargeAndInCharge: He is the self-elected head of the diesels by ''Day of the Diesels'', and he's a particularly big and powerful Class 42 "Warship" diesel. The hydraulic claw probably helps, too.
* LargeHam: In both TheMovie and Season 17.
* LaughablyEvil: Compared to TheMovie, he's slowly become this over time; less of a legitimately threatening villainous sociopath, and more of a troublemaker and bully who still looks out for his fellow diesels.
* AMoltenDateWithDeath: In one of his most evil moments in ''Thomas and the Magic Railroad'', Diesel 10 traps James in the smelters and nearly succeeds in shoving him backward into a vat of molten metal. He's only saved by Mr. Conductor warping him away with the Gold Dust at the ''literal'' last second.
* NeverMyFault: He tries lying to Splatter and Dodge when Mr. Conductor escapes his grasp. Unfortunately for him, Splatter and Dodge aren't convinced.
* TheNicknamer: He calls Splatter and Dodge collectively "Splodge", because he "ain't got time to say both names". He calls his claw "Pinchy", Thomas "Puffball", Toby "Teapot", the rest of the steam engines "Tin Kettle", and Mr. Conductor and Sidney "Twinkle Toes".
* NoodleIncident: Dialogue between Thomas and Gordon imply Diesel 10 used to work at Sodor before, but was sent away. It is never clarified ''why'' he was sent away, only that it was ''bad'', hence Thomas' description of "[[AddedAlliterativeAppeal ten out of ten for devious deeds]] and brutal strength," though his history with Lady means it was possibly due to his wrecking her.
* ObviouslyEvil: Besides his [[GoodColorsEvilColors drab olive hazard-stripe livery]], bad-tempered bullying nature and the fact he's [[EvilIsBigger an enormous diesel locomotive]], Diesel 10 also has a menacing hydraulic claw on his roof, that he affectionately names "Pinchy". Put them together, and even if he's no longer outright ''evil'' as he was previously, it isn't hard to tell that Diesel 10's not one to be messed with.
* SilenceYouFool: When his entourage are bickering in ''Day of the Diesels'', he shouts them quiet. Also prominent in ''WesternAnimation/ThomasAndTheMagicRailroad''.
* TheStinger: Diesel 10 appears right at the end of ''Misty Island Rescue'', hinting at his reappearance as the main antagonist of ''Day of the Diesels'', ominously looking down from a bridge -- where an earlier chase took place -- at the steam engines attending the grand opening:
-->'''Diesel 10''': You'll be laughing on the other side of your boilers soon, silly steamies.
* SurroundedByIdiots: His henchdiesels, ranging from Splatter and Dodge to Den and Dart, who are never anywhere near as vicious nor as smart as he is. He even frustratedly ditches the former two in his first appearance to go after Thomas and Lady himself.
* TooFastToStop: What ultimately defeats him in ''Thomas And The Magic Railroad''. While Diesel 10 is faster and stronger than both Thomas and Lady, they're small enough to cross the collapsing viaduct while ''he'' can't due to his bigger size and weight. This also means he's unable to slow down in time to avoid falling.
* VileVillainSaccharineShow: Compared to the actual series, where most of the bad guys were kept in order with relative ease by the Fat Controller, Diesel 10 in TheMovie with his plans of destroying all steam engines is much more dangerous. Dialled back in later televised appearances, where he's more just a trouble-making bully with [[WellIntentionedExtremist legitimately good intentions deep down]].
* VillainousBreakdown: Diesel 10 has several of these, like when he loses his composure and is forced to flee when Mr. Conductor threatens him with [[WeaksauceWeakness sugar]]. He also has one when he goes off the collapsing viaduct during the final chase sequence, reduced to futilely yelling insults at Thomas and Lady before he falls.
-->'''Diesel 10:''' [[TooFastToStop Whoa, whoawhoawhoawhoa]]'''[[TooFastToStop WHOA!]]''' (''grabs onto one of the broken rails with Pinchy'') ARGH! '''PUFFBALL! TEAPOT!''' (''the broken rail snaps, causing Diesel 10 to plunge into a boiler sludge-filled barge far below'') '''TIN ''KEEEEEETTLEEEEE!'''''
* WeaksauceWeakness: Apparently, pouring sugar in Diesel 10's tank will prevent him from ever working again. [[MakesJustAsMuchSenseInContext And before you ask]], yes, [[SincerityMode that]] ''[[SincerityMode is]]'' [[SincerityMode a legitimate weakness]].
* WellIntentionedExtremist: Essentially the motivation for his actions in the CGI Series, he just wants the diesels to receive more attention since they always appear to be neglected, and he seems to apologize if he's made a mistake; for instance, giving the Steam Engines their own decorations, since he ruined theirs thinking that the Dieselworks wouldn't have any decorations.
[[/folder]]
[[folder:Dennis]]
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/b4e6c4df222a009469790edf3210c8a2.png]]
-->''"...I'm a really lazy engine..."''
--> Voiced in Japanese by: Tsutomu Densaka
--> Number: 11001
--> Basis: Bulleid No. 11001 0-6-0DM
--> Built: 1949
A diesel who is lazy. He takes advantage of Thomas by letting him do his work for him, but after he reversed into a ditch, he learns his lesson, and with the help of Thomas, he gets his work done, and promises to be a Really Useful Engine. He has a twin named Norman.
* BadBadActing: Dennis playing sick.
-->'''Dennis''': Heelllp.....heelllp....
* BrilliantButLazy: Unlike Norman who wants to be useful but breaks down, Dennis can work perfectly fine but can't be arsed.
* ChuckCunninghamSyndrome: He has not been in an episode since season 9 and ''WesternAnimation/TheGreatDiscovery'', but is mentioned to be Norman's twin.
* DeepSouth: In the US dub.
* ItsAllAboutMe: The narration describes him as such.
-->'''Narrator''': "He didn't care about the tiles. He didn't care about Thomas. All he cared about was getting far away from his work."
* LazyBum: His main personality trait is his lazy work ethic.
* PolarOppositeTwins: Him and Norman. Norman wants to be Really Useful, but breaks down often. Meanwhile, Dennis works fine but is incredibly lazy. Dennis also has two eyebrows, while Norman has only one.
* TheSlacker: As mentioned earlier, he's lazy despite his systems working perfectly.
* TakingAdvantageOfGenerosity: Exploits Thomas who is having a day off to avoid his own work.
[[/folder]]
[[folder:Den and Dart]]
[[quoteright:320:https://static.tvtropes.org/pmwiki/pub/images/7380ce9bd929bdf19794ff90559e9c67.png]]
[[caption-width-right:320:Den (left) and Dart (right)]]
--> "Me, sir? But, um... not... by myself..."
--> "What he means is, we're a team, sir! We work together!"
-->Den voiced by: Creator/KeithWickham (UK/US; fifteenth season onwards)
-->Dart voiced by: Rupert Degas (UK/US; Day of the Diesels - sixteenth season), Steven Kynman (UK/US; seventeenth season onwards)
--> Built: Den 1959/1971, Dart 1961
--> Bases: 4DH Sentinel Diesel-Hydraulic (Den) Bagnall No.3207 ''"Leys"'' (Dart)
A pair of diesels that work at the Dieselworks.
----
* BigGuyLittleGuy: Den being the Big, and Dart the Little.
* CharacterisationMarchesOn: In their earliest appearances, they sometimes joined the more antagonistic diesels [[WellIntentionedExtremist if it fit their cause]] (though with implications they were still [[MinionWithAnFInEvil softer and less willing]] than Diesel or Diesel 10 who usually ran things). By Season 16 they are nearly always on good terms with the steam engines.
* ADayInTheLimelight: Season 19's "Den and Dart".
* DumbMuscle: Downplayed. Den is the bigger and stronger one of the two, but struggles to get his thoughts into words.
* HeterosexualLifePartners: Especially shown in "Den and Dart", where they can't stand being separated from one another.
* OOCIsSeriousBusiness: When Den saves Toby from a runaway truck, he scolds the trucks in ''a full sentence''.
* OrangeBlueContrast: Den's color scheme.
* PhraseCatcher: Den struggles to finish what he's trying to say, so other engines finish his thoughts for him, with "What you/he mean/s is..."
* RealisticDictionIsUnrealistic: Averted with Den, who mumbles, stutters, and loses his [[IncrediblyLamePun train]] of thought.
* ShorterMeansSmarter: Dart is the smaller and weaker of the pair, but is quick-witted and able to figure out what Den's trying to say.
* ThoseTwoGuys: Are regularly a double act. Their limelight episode "Den and Dart" lampshades this when a job separates them.
[[/folder]]
[[folder:Paxton]]
[[quoteright:185:https://static.tvtropes.org/pmwiki/pub/images/185px-gordonrunsdry9_42.png]]
-->''"Hi, Stephen. Thomas lost his puff, and I'm trying to find it, and... well, I thought that might be... the lost puff... up there..."''
--> Voiced in English by: Creator/KeithWickham (''Day of the Diesels''), Steven Kynman (''Blue Mountain Mystery'', Series 23)
--> Voiced in Japanese by: Koichi Sakaguchi (''Day of the Diesels''), Kunihiro Kawamoto (''Blue Mountain Mystery'' - Series 23)
--> Voiced in Latin American Spanish by: Creator/KaihiamalMartinez (''Day of the Diesels'' - Series 23)
--> Basis: British Railways Class 08 0-6-0DM
--> Built: 1952/1962
A soft-natured, if somewhat ditzy diesel who works with the Narrow Gauge engines in Blue Mountain Quarry. Friendly towards steamies, but tends to hang with a bad crowd.
----
* AscendedExtra: He started out as a background character who didn't speak, but ''Blue Mountain Mystery'' gave him a voice and personality. Since then, he's been a recurring supporting character and has even been granted his own limelight episodes.
* AttentionDeficitOohShiny: Even worse than Thomas. Look at that duck!
* BigDamnHeroes: In ''Blue Mountain Mystery'', [[spoiler:just as Diesel rats out Luke to the Fat Controller, Paxton arrives with Victor, who clears up everything.]]
* CharacterizationMarchesOn: In his earliest appearances, Paxton was a background associate of the other diesels and often joined in heckling or tormenting other engines. "Blue Mountain Mystery" onward, his meek kindly persona is established.
* ChromaticArrangement: Of the three diesel engines introduced in ''Day of the Diesels'', he's the Green to Norman's Red and Sidney's Blue.
* CloudCuckooLander: Usually spacey, though he has occasional moments of clarity. He tries to warn Gordon to have his leaking boiler checked in "Gordon Runs Dry" for example.
* TheDitz: He is easily distracted.
* ExtremeDoormat: Though he will often ultimately draw the line when pushed into callous acts.
* {{Foil}}: Both him and Diesel are both Class 08's, and Paxton is simply the kind, yet ditzy counterpart to the callous and manipulative Diesel.
* KindheartedSimpleton: He is ditzy, but is one of the kindest diesels around.
* MinionWithAnFInEvil: To Diesel in "Blue Mountain Mystery". Also to Diesel 10 in "The Missing Christmas Decorations".
* NiceGuy: "Blue Mountain Mystery" onward, he's shown to be a pleasant and kind-hearted fellow; even Cranky gets along with him.
* TokenGoodTeammate: Like Boco and Mavis, he serves as one of the nicer diesels.
* ToxicFriendInfluence: Hangs around with other more antagonistic diesels. [[ADogNamedDog Diesel]] in particular has been shown able to manipulate him into doing immoral deeds.
** Ends up playing this himself in "The Lost Puff" when he convinces Thomas to play on the damaged tracks. He is horrified when it causes an accident however.
* WindmillCrusader: Seems to be a recurring pivot in his limelight episodes, ComicallyMissingThePoint in some way or other and going on a wild goose chase, be it for "lost puffs" or disappearing diesels.
[[/folder]]
[[folder:Norman]]
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/51a6c597458d503b38cedc606147f82f.jpg]]
--> Voiced in English by: Creator/KerryShale (''Day of the Diesels'' - Series 15), Creator/KeithWickham (Series 17 - Series 23)
--> Voiced in Japanese by: Ken Sanders (''Day of the Diesels''), Nobuaki Kanemitsu (Series 17), Kunihiro Kawamoto (Series 20 - Series 23)
--> Voiced in Latin American Spanish by: Juan Alfonso Carralero (Series 17 - Series 23)
--> Basis: Bulleid No. 11001
An orange-red Diesel and is Dennis's twin.
* AscendedExtra: ''Somewhat'' in ''[[WesternAnimation/ThomasAndFriendsTheGreatRace The Great Race]]'', where he nearly has a collision with Thomas.
* BigOlUnibrow: He has one.
* ChromaticArrangement: Of the three diesel engines introduced in ''Day of the Diesels'', he's the Red to Sidney's Blue and Paxton's Green.
* DemotedToExtra: He was introduced as a MerchandiseDriven character in ''WesternAnimation/DayOfTheDiesels'', and was promptly banished to background appearances with no speaking roles shortly afterwards. Like Paxton and Sidney, he started appearing more often during Brenner's run as writer, though unlike them, he has yet to have ADayInTheLimelight proper.
* NiceGuy: In comparison to his twin, he is much kinder and more of a hard worker.
** He's even nice to the steam engines.
* PolarOppositeTwins: Him and Dennis. Unlike Dennis who works fine, but is very lazy, Norman wants to be Really Useful, but breaks down often. While Dennis has two eyebrows, Norman has only one.
* TheReliableOne: To the point The Fat Controller outright considers it OOCIsSeriousBusiness if Norman screws something up.
[[/folder]]
[[folder:Sidney]]
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/5ddb6c7e98c24d5fec87987dc4bb5e04.png]]
-->''"What about me? I'm a decoration!"''
--> Voiced in English by: Creator/KerryShale (''Day of the Diesels''), Bob Golding (Series 17 - Series 23)
--> Voiced in Japanese by: Shoto Kashii (Series 17, ''The Great Race''), Ken Sanders (Series 18 - Series 23)
--> Voiced in Latin American Spanish by: Andrés García (Series 17 - Series 18), Geno Sánchez (Series 20 - Series 23)
--> Basis: British Railways Class 08 0-6-0DM
--> Built: 1952/1962
* ADayInTheLimelight: In ''Sidney Sings'' and ''The Case of the Puzzling Parts''.
* TheAllegedCar: Downplayed in that he was apparently otherwise functional, but he spent a good two years non-functional, stuck on a locomotive hoist without wheels of his own.
* AscendedExtra: He was promoted to the recurring cast in season 20, starring in his own episode, and has made many appearances since then.
* ButtMonkey: He spent two years on a hoist before getting new wheels.
* ChromaticArrangement: Of the three diesel engines introduced in ''Day of the Diesels'', he's the Blue to Norman's Red and Paxton's Green.
* ForgetfulJones: Sidney's known for being forgetful, even forgetting how long he's gone without his wheels.
* KindheartedSimpleton: He's not exactly the smartest engine in the shed, but he is one of the nicest engines on the island, even when he is up on a hoist.
* MinionWithAnFInEvil: Much like Paxton, he seems pretty docile and somewhat simple, despite hanging around with the other more antagonistic diesels.
* TokenGoodTeammate: Like Paxton and the other friendly diesels, he serves as one of the nicer ones.
* ThePollyanna: Despite his bad memory and luck, he tends to remain jolly and positive. He quite merrily waited ''two years'' hoisted up in the Dieselworks before finally getting his new wheels fitted.
* PutOnABus: He hadn't been seen in any episodes between "Day of the Diesels" and "The Missing Christmas Decorations", spending two whole years unable to move because he lacked wheels.
[[/folder]]
----
[[Characters/ThomasAndFriendsTheSteamTeam The Steam Team]] | '''The Diesels''' | [[Characters/ThomasAndFriendsLittleWesternAndArlesdale Little Western and Arlesdale]] | [[Characters/ThomasAndFriendsSkarloeyRailway Skarloey Railway]] | [[Characters/ThomasAndFriendsForeignEngines Foreign Engines]] | [[Characters/ThomasAndFriendsSecondaryCharacters Secondary Characters]] | [[Characters/ThomasAndFriendsNonRailCharacters Non-Rail Characters]] | [[Characters/ThomasAndFriendsRollingStock Rolling Stock]] | [[Characters/ThomasAndFriendsHumans Humans]] ]]]] -]
----
[[foldercontrol]]
[[folder:Diesel]]
[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/disappearingdiesels99.png]]
[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/dieselmodel.png]]
-->''"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!"''
--> Voiced in English by: Michael Brandon (US; Series 13-16), Creator/MartinSherman (US; ''King of the Railway'' - Season 18), Creator/KerryShale (UK; Series 13 - 24, US; Series 19 - 24)
--> Voiced in Japanese by: Creator/DaisukeGori (Series 2 - Series 8, excluding Series 6), Creator/HisaoEgawa (Series 6), Ken Sanders (''Calling All Engines!'' - Series 24), Shinichi Ishihara (singing voice)
--> Voiced in Latin American Spanish by: Jorge Ornelas (Series 13 - Series 24)
--> Basis: British Railways Class 08 0-6-0DM
--> Built: 1952
The first diesel to visit the Island of Sodor, Diesel believes that diesels are better than steam engines, and wanted to "revolutionize" Sodor. He left and came back several times before becoming a permanent part of the railway.
* AdaptationalEarlyAppearance: In the books, he came on Sodor just after City of Truro left. Here, Diesel appears before Truro visited.
* AdaptationalVillainy: In the books, Diesel was merely a pompous bully, and, after one return to Sodor, managed to redeem himself. In the series, he returned permanently, though proved as nasty as ever, and gleefully bent on [[FantasticRacism having all steamies sent to the scrapyard]]. He tamed closer to the books' version in the [=HiT=] seasons.
* AesopAmnesia: No matter how many times he learns about being nice to other engines, he'll soon return to his bullying ways.
* AlliterativeName: His name in the marketing, '''D'''evious '''D'''iesel.
* AntiHero [=/=] AntiVillain: In rare instances, he's portrayed as an engine that ''wants'' to do good work and be recognized for his talents, but doesn't know the right way to do so and ends up hurting or upsetting others.
* ArchEnemy: Though antagonistic to almost everyone, he seems to direct most of his enmity and rivalry towards Thomas in the HIT seasons. His main enemy in his initial appearances was Duck.
* ArcVillain: Of the three-episode arc with Duck as the main protagonist: "Pop Goes the Diesel", "Dirty Work", and "A Close Shave", though he doesn't appear in the last one.
* AscendedExtra: He appeared in one novel of ''Literature/TheRailwaySeries'' and a standalone story by Christopher Awdry. In the show (especially in later HIT seasons), he makes regular appearances and is a key antagonist.
* AttackHello: At least in "Springtime for Diesel", his way of saying "hello" is by deliberately bumping into other engines.
* BitchInSheepsClothing: He isn't above pretending to be a NiceGuy, especially when he's in the [[ManipulativeBastard manipulative]] mood. In his debut episode "Pop Goes the Diesel" for instance, he effortlessly charms the other engines into believing he's a NiceGuy. He soon then reveals his true colours, though.
* TheBully: What he becomes in the new series. He gets enjoyment of heckling and harassing other engines, especially steam engines.
* CardCarryingJerkass: HiddenHeartOfGold and PetTheDog moments aside, Diesel proudly admits in "Diesel and the Ducklings" that he's a {{Jerkass}}.
-->'''Emily:''' Stop being so horrid Diesel.
-->'''Diesel:''' I'll be just as horrid as I like.
* CardCarryingVillain: He admits he's a bad engine during "[[VillainSong I'm Full of Surprises]]" and once stated [[MeaningfulName there's a reason]] he's called [[AlliterativeName Devious Diesel]].
* CharacterDevelopment: Subtle example. From the early Hit episode "Thomas To The Rescue", Diesel drifts from being a DarkMessiah bent on scrapping steamies to more just a petty Jerkass who can show ''some'' begrudged respect for steamies like Thomas. The CGI series increasingly conveys Diesel as more just an insecure bully who wants recognition but can't let go of old grudges.
* DarkMessiah: In his first episode, he comes to Sodor preaching the diesel revolution.
** Touched on lightly again in ''Blue Mountain Mystery'' where after hearing of Luke's DarkAndTroubledPast, he convinces Paxton that Luke is dangerous and must be gotten rid of.
* DependingOnTheWriter: Either a ManipulativeBastard or a brutish bully, with his methods being either out of unsympathetic spite or because he felt he was wronged.
* DevilInPlainSight: He's the most ObviouslyEvil character among the recurring cast, is willing to ruin jobs for glory or petty revenge, and any hint of possible reformation is gone by the next episode, yet he's still is allowed to live and work on the railway.
* DisproportionateRetribution: When not picking on engines [[ItAmusedMe for mean laughs]], he's often committing this. As he lampshades in "Springtime For Diesel" the steam engines aren't particularly nice to him either, but what meanness they can give he can surpass ten fold. The most iconic being in his first appearance where, after Duck let him humiliate himself for being a pompous kiss-ass, Diesel spread MaliciousSlander to try and get him booted off the railway.
* DoesNotKnowHowToSayThanks: In "Disappearing Diesels". He settles for a [[TheUnSmile friendly smile]] instead.
* ADogNamedDog: A diesel named Diesel.
* EstablishingCharacterMoment: In his introductory episode, in which after smoothly flattering all the other engines, he says the above quote to Duck about how diesels "don't need to learn" and are "revolutionary".
* EvenEvilHasStandards: Diesel is no saint himself, but even he was repulsed in "Blue Mountain Mystery" after he learnt that [[spoiler: Luke seemingly killed another engine]].
* EvilBrit: In later seasons of the U.S. dub, Diesel speaks in a bit of a [[UsefulNotes/BritishAccents Cockney accent]]. There's also a good reason they call him devious.
* EvilCounterpart: He's just as iconic as Thomas in the show, but for all the wrong reasons and sees the blue tank engine as his ArchEnemy.
** He even sings a warped version of the [=BWBA=] theme during his ImagineSpot where he imagines him doing a HostileShowTakeover.
* EvilCannotComprehendGood: He couldn't understand why Paxton would help him after one of his pranks, nor could he comprehend Daisy and Harvey's OddFriendship (Which [[{{Irony}} he himself instigated]])
* EvilIsPetty: He's fond of [[KickTheDog dog-kicking]] and {{Disproportionate Retribution}}s, never mind his FantasticRacism. However, Diesel can [[PragmaticVillainy restrain himself]], at least when the Fat Controller is nearby.
* EvilWearsBlack: He has black paint and is one of the most malicious characters in the series.
* FantasticRacism: Not initially, but after the Classic series, it's made clear Diesel thinks lowly of steam engines.
* {{Flanderization}}: Diesel saw diesels as revolutionary originally, but it was not his main vendetta against the steam engines, and he was rather shrewd and manipulative in his antics. Shortly into the TV made episodes however, Diesel became a more outspoken bully and exaggeratedly racist towards steamies. The current episodes seem to be toning him back down, even if he is still a much more obnoxious heckler than initially.
* FreudianExcuse: He discusses it in "Springtime for Diesel", saying how he doesn't feel that he should be nice to engines who aren't nice to him; evidently, on some level he's very well aware of how unfriendly he is, but is hurt by the fact that the other engines don't give him a chance to redeem himself, so he continues being mean [[ThenLetMeBeEvil since that's apparently what they expect of him]].
* FreudianExcuseIsNoExcuse: What was [[spoiler: Daisy]]'s response to learning about Diesel's FreudianExcuse? NoSympathy.
* GutturalGrowler: When voiced by Michael Brandon and Martin Sherman, Diesel has a gruff-sounding voice.
* TheHeckler: Sure to be found making fun of whatever the spotlighted engine is doing, often triggering their insecurities, particulary Gordon in, "Respect For Gordon".
* HiddenHeartOfGold: Played with in "Diesel and the Ducklings". He thinks that diesels should be rough and tough, but shows his soft side towards some ducklings.
* ItsAllAboutMe: He often chooses to do things based on his own selfish desires, while ignoring how his fellow engines will be affected by it.
* {{Jerkass}}: The most prominent one of the show as he is rude, bullying, and manipulative.
* JerkWithAHeartOfGold: Heavy on the "Jerk" part as he's a rude, [[ManipulativeBastard manipulative]], [[ItsAllAboutMe selfish]], and devious FantasticRacist. Still, he tends to get a [[PetTheDog softer moment]] roughly OnceASeason (e.g. "Diesel's Special Delivery", and in the Arc-animated episodes "Diesel and the Ducklings" and "Springtime for Diesel") and he shows VillainRespect when he feels like it. It's also implied in "Disappearing Diesels" that he simply doesn't know how to be nice, even if he tries.
* JokerImmunity: A G-rated example. In contrast to his ''Railway Series'' counterpart (who was sent packing the moment the Fat Controller could deduce he was the one spreading lies in the yard), Diesel is never sent away again or receives any severe punishment, despite all of the trouble he causes with no sign of reformation.
* KarmaHoudini: A PlayedWith one. Diesel usually gets hit with LaserGuidedKarma whenever he does something bad. However, he's still allowed on Sodor despite his terrible track record (and having been sent away multiple times).
* KickTheSonOfABitch: Sometimes Diesel's heckling is directed towards haughty engines or even ones that bite first. FantasticRacism is a prominent issue among many steamies and diesels, Diesel's just one of the worst cases.
* KindnessBall: In "Diesel's Special Delivery", he's inexplicably nice and doesn't brag about his superiority over steam engines.
* ManipulativeBastard: Renowned for this, most infamously in his debut, he tells jokes about the big engines to the trucks, and tells them that Duck shared them with him. Once the trucks starts laughing at the other engines, they're convinced Duck had been spreading nasty jokes about them. Despite being found out and punished, he still somehow manages to smooth talk engines into trusting him (eg. convincing a lonely Percy into helping the Dieselworks in "Day Of The Diesels", or sweet talking Mavis into doing odd jobs in "Thomas The Quarry Engine"). He notes the other engines distrust of newcomer Sonny, and manipulates him into doing his jobs as he pretends to be friendly with the new engine.
* MeaningfulName: [[AlliterativeName Devious Diesel]], befitting of his conniving persona.
* MyGodWhatHaveIDone: Diesel has experienced this several times. For example, [[spoiler: he is sincerely remorseful when he thinks he damaged Daisy beyond repair after giving her a teasing biff in "Springtime For Diesel"]].
* MythologyGag: Though the TV series never adapted ''Thomas and the Evil Diesel'' proper, the premise of Diesel becoming an occasional FriendlyEnemy to Thomas got used recurrently from the HIT era onwards.
* NeverMyFault: [[CantTakeCriticism Hates being reprimanded for his mistakes]], and will always find a way to shift the blame onto other engines. This gets especially bad in season 23's "Diesel Do Right" where after he's punished by the Fat Controller for not doing his job correctly, rather than own up to his failure and work harder, he decides to trick Rebecca into doing the other diesels' jobs wrong.
* NiceMeanAndInBetween: Of the three diesels introduced in Season 2, he's the Mean to [=BoCo's=] Nice and Daisy's In-between. He's bullying and manipulative and plotted to have Duck sent away from Sodor.
* ObviouslyEvil: In the Mitton directed seasons anyway. While the books left it more imagination, the show version's devious smile, sinister Leitmotif and shady voice over from the narrator leave little doubt from the first time he's shown that he probably isn't a NiceGuy.
* OffscreenKarma: In "A Close Shave" where the Fat Controller found out about his lies about Duck telling names about the other engines and sent him away to the other railway. Averted in "Diesel Does It Again" and most later episodes where Diesel is seen getting his comeuppance for causing trouble.
* OutOfCharacterMoment: "Diesel's Special Delivery", in which Diesel broods over not getting clapped and cheered by children as much as James does.
* PetTheDog: One episode per season, before he snaps back into his usual devious and abrasive personality.
* PsychoticSmirk: His default expression whenever he's up to no good is an evil-looking smirk. He's even doing it in one of the above pictures.
* RedAndBlackAndEvilAllOver: He's got red buffers, [[EvilWearsBlack black paint]], and a malicious nature.
* RedBaron: In promotional material, he is often referred to as "Devious Diesel". Within the show itself, this nickname is rare, but not completely unheard of.
* ShipTease: He has some with Daisy in season 21. In "Springtime for Diesel", he feels guilty about bumping her and admits that he likes her while she's (pretending to be) asleep at the Dieselworks, and made a genuine effort to become her friend. At one point in "A Most Singular Engine", he blushes as he says her name.
* SmallNameBigEgo: He's extremely egotistical, cocky and strongly believes that the diesels are far superior than the steam engines.
* SmugSnake: Especially in later CGI episodes. While Diesel is a fine schemer and ManipulativeBastard, he is quite cocky and not as clever as he thinks he is. The original version of the song "Troublesome Trucks" even indirectly calls him out on the latter. Special note goes to [[spoiler: "Diesel Glows Away" in which he underestimates Nia's intellect. Also, she and Paxton trick him into falling for his very own trick (although he at least later deduced that they tricked him)]].
* TeamRocketWins:
** Sometimes gets to pull specials and look splendid at last. "Diesel's Special Delivery" for example.
** "The Railcar and the Coaches" also ends with him temporarily taking over Thomas' branch line after Annie and Clarabel trick Daisy.
** Perhaps the most pronounced example is "The Big Freeze", where the lack of coal means diesels are left taking over jobs on the railway. For an extra touch Diesel finds Thomas has stranded himself at a station out of carelessness. In a surprising case of WhatYouAreInTheDark however, rather than savouring his dream of overthrowing the steamies, [[PetTheDog Diesel goes and gets the delivery of coal and is treated as a hero.]]
* ThenLetMeBeEvil: In a few cases, including his first appearance, Diesel will make a halfway attempt to be friendly and helpful, but either his bad reputation or oily manner of doing so will lead him to get brushed off, and him to usually revert back to his old nasty habits in retaliation. As he sulks in "Springtime For Diesel" he doesn't feel the need to be nice when he doesn't feel anyone is nice to ''him''.
* UngratefulBastard: When Duck [[BigShutUp stands up for Diesel]] when the trucks were [[TheVillainSucksSong singing a rude song]], he blames Duck for, ahem, 'making the trucks laugh at him'.
* VillainousBreakdown: While they vary in intensity, Diesel is prone to losing his cool whenever his plots fail, of note is his "Hugh, GURR, SMOOOARR", growling in Pop Goes The Diesel.
* VillainRespect: He occasionally displays some begrudged respect for some engines, like [[ArchEnemy Thomas]].
* VillainWithGoodPublicity: He managed to get James, Gordon, and Henry on his side in "Dirty Work" when he spread lies about them to the Troublesome Trucks and pinned the blame on Duck. Diesel had made a good first impression on them by complimenting them when he first visited Tidmouth Sheds in his debut episode, "Pop Goes the Diesel".
* VisionaryVillain: Started off as one, with it returning every now and then.
--> '''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!"
[[/folder]]
[[folder:Diesel 10]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/maindiesel10cgi.png]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/maindiesel10model.png]]
-->''"I can do whatever I want! I'll get him, too! With Pinchy!"''
--> Voiced in English by: Keith Scott (''Thomas and the Magic Railroad'', workprints only), Creator/NeilCrone (''WesternAnimation/ThomasAndTheMagicRailroad''), Rupert Degas (''Misty Island Rescue'' and ''Day of the Diesels'', original cut only), Matt Wilkinson (''Misty Island Rescue'' - Series 17)
--> Voiced in Japanese by: Ginzo Matsuo (''Thomas and the Magic Railroad''), Creator/KiyoyukiYanada (''Calling All Engines''), Creator/TakayaKuroda (''Misty Island Rescue''), Ryota Yamasato (''Day of the Diesels''), Yohei Nishina (Series 17)
--> Voiced in Latin American Spanish by: Luis Alfonso Padilla (''Thomas and the Magic Railroad''), Creator/MiguelAngelGhigliazza (''Thomas and the Magic Railroad'', TV version), Creator/GerardoReyero (''Misty Island Rescue'' - Series 17, excluding ''Day of the Diesels''), Creator/EduardoGarza (''Day of the Diesels'')
--> Basis: British Railways Class 42 'Warship'
The main antagonist of ''WesternAnimation/ThomasAndTheMagicRailroad'' and ''WesternAnimation/DayOfTheDiesels''. A large warship diesel with a mechanical claw on his roof, he was out to destroy Lady and Mr. Conductor, but was defeated thanks to Thomas. He has returned several times in the show's run as a permanent part of the railway.
* AffablyEvil: By the time of ''Day of the Diesels'' where his evil ways are mostly put on the wayside in favor of him being [[JerkWithAHeartOfGold rude and vicious-tempered]], but [[WellIntentionedExtremist just trying to look out for his diesel brethren]], whom he sees as neglected.
* BadBoss: Is a mild example of this. In ''Thomas and the Magic Railroad'', he tries to put Splatter and Dodge in their places by teaching them "how to stop being stupid", only to get coal dumped all over him.
* BigBad: Diesel 10 is this in both ''WesternAnimation/ThomasAndTheMagicRailroad'' and ''WesternAnimation/DayOfTheDiesels''.
* BrooklynRage: In TheMovie, Diesel 10 speaks in a rough and angry New York accent. He also caused Lady to crash, unapologetically tries to kill James, Lady and Thomas, and he nearly dropped Mr. Conductor off a viaduct. This oddly contrasts to his much smoother EvilBrit voice in later appearances.
* TheBrute: Along with being the BigBad of at least two features, Diesel 10 is this among the diesels; being a very large and very strong [[https://en.wikipedia.org/wiki/British_Rail_Class_42 Class 42 Warship]] locomotive with a dangerous hydraulic claw arm.
* ButtMonkey: He gets his immediate comeuppance in at least three scenes of ''Magic Railroad''; one in which his claw malfunctions, another where he gets coal dumped all over him, and finally being defeated by falling off a collapsing viaduct into a [[TrashLanding barge full of old boiler sludge]].
* CartoonCreature: While he ''is'' based on a real locomotive type (albeit shortened in length), Diesel 10's hydraulic claw is purely a fantasy creation with little-to-no practical use. In fact, such a modification is actually a ''breach of regulations'', since not only is it illegal to modify locomotives with additional moving parts, but it would also make him unable to fit through standard-height tunnels.
* CheatedAngle: In the model series, his nose is tilted more towards his left eye. This was averted when the CGI series came, which moved it more to the middle of his face.
* DemotedToExtra: He has disappeared from the series after season 17's "The Missing Christmas Decorations", for reasons unknown. Although, Pinchy does appear in an ImagineSpot in season 22's "What Rebecca Does", and Mattel still sees him as a lucrative character, seeing as he's merchandised to death despite not being on the show all that often.
* DependingOnTheWriter: He's either an evil, [[FantasticRacism dieselist]] brute who is out to destroy all steam engines, or simply a rude JerkWithAHeartOfGold who doesn't like "steamies" all that much but is still willing to help out when it counts; and moreso when he can get something out of it for himself, or for the other diesels.
* DevilInPlainSight: The steam engines all can tell he's clearly evil, but the Fat Controller keeps him around for reasons unknown. [[DownplayedTrope Downplayed]] in the series, where he is still a devious schemer, but his attitude leans more towards {{Jerkass}}/JerkWithAHeartOfGold than than just outright evil.
* DisneyVillainDeath: Not a death per se, but his defeat in ''Magic Railroad'' is brought around by falling off of a collapsing viaduct; though he's saved by [[TrashLanding falling into a passing barge full of boiler sludge]].
* ADogNamedDog: He's a diesel whose name is Diesel, but he has a number to distinguish himself from the ''other'' two Diesels. Thomas lampshades said number in ''Magic Railroad'' by describing him as "Ten out of ten for devious deeds and brutal strength".
* TheDreaded: Right from his first appearance, Diesel 10 has this reputation among the other engines. Even when his villainy is considerably toned down later on, Thomas is terrified at the prospect of asking him for help in ''Calling All Engines!'', and [[LargeAndInCharge most of the other diesel engines firmly answer to him]].
-->'''Gordon:''' (''shuddering in fear'') D-Diesel 10's back!
-->'''Thomas:''' Yes, ten out of ten for devious deeds and brutal strength. The blast from the past who hates steam engines!
* EstablishingCharacterMoment: In TheMovie, he roars through as station, kicking up dust shouting "Get outta my way! I have unfinished business here and I wanna finish it FAST!". He also leaves ''[[TheBigGuy Gordon]]'', of all engines, shaking in fear.
* EvilBrit: In the US dub of the television series, he speaks in a smooth, sinister British accent due to him keeping his voice from the UK series.
* EvilCounterpart: To P. T. Boomer in ''Thomas and the Magic Railroad'', who serves as the Shining Time counterpart of Diesel 10. However, the two are both evil.
* EvilLaugh: Has an impressive one, but it tends to be subverted due to it often ending with him getting into a coughing fit from his own diesel fumes.
* FauxAffablyEvil: Diesel 10 is firmly this in ''Thomas and the Magic Railroad'', where he often strikes up conversations in a faux-friendly tone with his would-be victims as he's attacking them. One good example of it is when he captures Mr. Conductor with Pinchy and threatens to drop him off a high viaduct if he doesn't tell him where the magic buffers are in short order:
-->'''Diesel 10:''' Hello, Twinkle Toes! Remember me? Fat Hatt won't have much use for you looking like that. (''laughs cruelly'') [[CallBack Ah, I see you forgot to bring the sugar. How]] ''[[CallBack careless]]'' [[CallBack of you!]] (''grabs Mr. Conductor as he tries to flee'') Say hello to Pinchy!
* ForTheEvulz: Dumping sneezing powder all over Tidmouth Sheds Yards has got to be this.
* GambitRoulette: His plans in ''Day of The Diesels'' rely on circumstances he could have hardly picked out.
* GracefulLoser: His reaction to falling into a barge of sludge?
-->'''Diesel 10:''' (''slowly realises he's okay'') Huh. Ah, well... nice time of year for a cruise. (''[[LaughingAtYourOwnJokes chuckles to himself sadly]]'')
* ICallItVera: He calls his hydraulic claw "Pinchy".
* JerkWithAHeartOfGold: Diesel 10's characterization in ''WesternAnimation/CallingAllEngines''. It's also evident to a lesser extent in his later appearances; he's still a bullying troublemaker who maintains his reputation as TheDreaded, but he cares a lot deep down for his diesel brethren -- whom he sees as neglected compared to the steam engines -- and [[WellIntentionedExtremist commits a good portion of what he does for their benefit]].
* LargeAndInCharge: He is the self-elected head of the diesels by ''Day of the Diesels'', and he's a particularly big and powerful Class 42 "Warship" diesel. The hydraulic claw probably helps, too.
* LargeHam: In both TheMovie and Season 17.
* LaughablyEvil: Compared to TheMovie, he's slowly become this over time; less of a legitimately threatening villainous sociopath, and more of a troublemaker and bully who still looks out for his fellow diesels.
* AMoltenDateWithDeath: In one of his most evil moments in ''Thomas and the Magic Railroad'', Diesel 10 traps James in the smelters and nearly succeeds in shoving him backward into a vat of molten metal. He's only saved by Mr. Conductor warping him away with the Gold Dust at the ''literal'' last second.
* NeverMyFault: He tries lying to Splatter and Dodge when Mr. Conductor escapes his grasp. Unfortunately for him, Splatter and Dodge aren't convinced.
* TheNicknamer: He calls Splatter and Dodge collectively "Splodge", because he "ain't got time to say both names". He calls his claw "Pinchy", Thomas "Puffball", Toby "Teapot", the rest of the steam engines "Tin Kettle", and Mr. Conductor and Sidney "Twinkle Toes".
* NoodleIncident: Dialogue between Thomas and Gordon imply Diesel 10 used to work at Sodor before, but was sent away. It is never clarified ''why'' he was sent away, only that it was ''bad'', hence Thomas' description of "[[AddedAlliterativeAppeal ten out of ten for devious deeds]] and brutal strength," though his history with Lady means it was possibly due to his wrecking her.
* ObviouslyEvil: Besides his [[GoodColorsEvilColors drab olive hazard-stripe livery]], bad-tempered bullying nature and the fact he's [[EvilIsBigger an enormous diesel locomotive]], Diesel 10 also has a menacing hydraulic claw on his roof, that he affectionately names "Pinchy". Put them together, and even if he's no longer outright ''evil'' as he was previously, it isn't hard to tell that Diesel 10's not one to be messed with.
* SilenceYouFool: When his entourage are bickering in ''Day of the Diesels'', he shouts them quiet. Also prominent in ''WesternAnimation/ThomasAndTheMagicRailroad''.
* TheStinger: Diesel 10 appears right at the end of ''Misty Island Rescue'', hinting at his reappearance as the main antagonist of ''Day of the Diesels'', ominously looking down from a bridge -- where an earlier chase took place -- at the steam engines attending the grand opening:
-->'''Diesel 10''': You'll be laughing on the other side of your boilers soon, silly steamies.
* SurroundedByIdiots: His henchdiesels, ranging from Splatter and Dodge to Den and Dart, who are never anywhere near as vicious nor as smart as he is. He even frustratedly ditches the former two in his first appearance to go after Thomas and Lady himself.
* TooFastToStop: What ultimately defeats him in ''Thomas And The Magic Railroad''. While Diesel 10 is faster and stronger than both Thomas and Lady, they're small enough to cross the collapsing viaduct while ''he'' can't due to his bigger size and weight. This also means he's unable to slow down in time to avoid falling.
* VileVillainSaccharineShow: Compared to the actual series, where most of the bad guys were kept in order with relative ease by the Fat Controller, Diesel 10 in TheMovie with his plans of destroying all steam engines is much more dangerous. Dialled back in later televised appearances, where he's more just a trouble-making bully with [[WellIntentionedExtremist legitimately good intentions deep down]].
* VillainousBreakdown: Diesel 10 has several of these, like when he loses his composure and is forced to flee when Mr. Conductor threatens him with [[WeaksauceWeakness sugar]]. He also has one when he goes off the collapsing viaduct during the final chase sequence, reduced to futilely yelling insults at Thomas and Lady before he falls.
-->'''Diesel 10:''' [[TooFastToStop Whoa, whoawhoawhoawhoa]]'''[[TooFastToStop WHOA!]]''' (''grabs onto one of the broken rails with Pinchy'') ARGH! '''PUFFBALL! TEAPOT!''' (''the broken rail snaps, causing Diesel 10 to plunge into a boiler sludge-filled barge far below'') '''TIN ''KEEEEEETTLEEEEE!'''''
* WeaksauceWeakness: Apparently, pouring sugar in Diesel 10's tank will prevent him from ever working again. [[MakesJustAsMuchSenseInContext And before you ask]], yes, [[SincerityMode that]] ''[[SincerityMode is]]'' [[SincerityMode a legitimate weakness]].
* WellIntentionedExtremist: Essentially the motivation for his actions in the CGI Series, he just wants the diesels to receive more attention since they always appear to be neglected, and he seems to apologize if he's made a mistake; for instance, giving the Steam Engines their own decorations, since he ruined theirs thinking that the Dieselworks wouldn't have any decorations.
[[/folder]]
[[folder:Dennis]]
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/b4e6c4df222a009469790edf3210c8a2.png]]
-->''"...I'm a really lazy engine..."''
--> Voiced in Japanese by: Tsutomu Densaka
--> Number: 11001
--> Basis: Bulleid No. 11001 0-6-0DM
--> Built: 1949
A diesel who is lazy. He takes advantage of Thomas by letting him do his work for him, but after he reversed into a ditch, he learns his lesson, and with the help of Thomas, he gets his work done, and promises to be a Really Useful Engine. He has a twin named Norman.
* BadBadActing: Dennis playing sick.
-->'''Dennis''': Heelllp.....heelllp....
* BrilliantButLazy: Unlike Norman who wants to be useful but breaks down, Dennis can work perfectly fine but can't be arsed.
* ChuckCunninghamSyndrome: He has not been in an episode since season 9 and ''WesternAnimation/TheGreatDiscovery'', but is mentioned to be Norman's twin.
* DeepSouth: In the US dub.
* ItsAllAboutMe: The narration describes him as such.
-->'''Narrator''': "He didn't care about the tiles. He didn't care about Thomas. All he cared about was getting far away from his work."
* LazyBum: His main personality trait is his lazy work ethic.
* PolarOppositeTwins: Him and Norman. Norman wants to be Really Useful, but breaks down often. Meanwhile, Dennis works fine but is incredibly lazy. Dennis also has two eyebrows, while Norman has only one.
* TheSlacker: As mentioned earlier, he's lazy despite his systems working perfectly.
* TakingAdvantageOfGenerosity: Exploits Thomas who is having a day off to avoid his own work.
[[/folder]]
[[folder:Den and Dart]]
[[quoteright:320:https://static.tvtropes.org/pmwiki/pub/images/7380ce9bd929bdf19794ff90559e9c67.png]]
[[caption-width-right:320:Den (left) and Dart (right)]]
--> "Me, sir? But, um... not... by myself..."
--> "What he means is, we're a team, sir! We work together!"
-->Den voiced by: Creator/KeithWickham (UK/US; fifteenth season onwards)
-->Dart voiced by: Rupert Degas (UK/US; Day of the Diesels - sixteenth season), Steven Kynman (UK/US; seventeenth season onwards)
--> Built: Den 1959/1971, Dart 1961
--> Bases: 4DH Sentinel Diesel-Hydraulic (Den) Bagnall No.3207 ''"Leys"'' (Dart)
A pair of diesels that work at the Dieselworks.
----
* BigGuyLittleGuy: Den being the Big, and Dart the Little.
* CharacterisationMarchesOn: In their earliest appearances, they sometimes joined the more antagonistic diesels [[WellIntentionedExtremist if it fit their cause]] (though with implications they were still [[MinionWithAnFInEvil softer and less willing]] than Diesel or Diesel 10 who usually ran things). By Season 16 they are nearly always on good terms with the steam engines.
* ADayInTheLimelight: Season 19's "Den and Dart".
* DumbMuscle: Downplayed. Den is the bigger and stronger one of the two, but struggles to get his thoughts into words.
* HeterosexualLifePartners: Especially shown in "Den and Dart", where they can't stand being separated from one another.
* OOCIsSeriousBusiness: When Den saves Toby from a runaway truck, he scolds the trucks in ''a full sentence''.
* OrangeBlueContrast: Den's color scheme.
* PhraseCatcher: Den struggles to finish what he's trying to say, so other engines finish his thoughts for him, with "What you/he mean/s is..."
* RealisticDictionIsUnrealistic: Averted with Den, who mumbles, stutters, and loses his [[IncrediblyLamePun train]] of thought.
* ShorterMeansSmarter: Dart is the smaller and weaker of the pair, but is quick-witted and able to figure out what Den's trying to say.
* ThoseTwoGuys: Are regularly a double act. Their limelight episode "Den and Dart" lampshades this when a job separates them.
[[/folder]]
[[folder:Paxton]]
[[quoteright:185:https://static.tvtropes.org/pmwiki/pub/images/185px-gordonrunsdry9_42.png]]
-->''"Hi, Stephen. Thomas lost his puff, and I'm trying to find it, and... well, I thought that might be... the lost puff... up there..."''
--> Voiced in English by: Creator/KeithWickham (''Day of the Diesels''), Steven Kynman (''Blue Mountain Mystery'', Series 23)
--> Voiced in Japanese by: Koichi Sakaguchi (''Day of the Diesels''), Kunihiro Kawamoto (''Blue Mountain Mystery'' - Series 23)
--> Voiced in Latin American Spanish by: Creator/KaihiamalMartinez (''Day of the Diesels'' - Series 23)
--> Basis: British Railways Class 08 0-6-0DM
--> Built: 1952/1962
A soft-natured, if somewhat ditzy diesel who works with the Narrow Gauge engines in Blue Mountain Quarry. Friendly towards steamies, but tends to hang with a bad crowd.
----
* AscendedExtra: He started out as a background character who didn't speak, but ''Blue Mountain Mystery'' gave him a voice and personality. Since then, he's been a recurring supporting character and has even been granted his own limelight episodes.
* AttentionDeficitOohShiny: Even worse than Thomas. Look at that duck!
* BigDamnHeroes: In ''Blue Mountain Mystery'', [[spoiler:just as Diesel rats out Luke to the Fat Controller, Paxton arrives with Victor, who clears up everything.]]
* CharacterizationMarchesOn: In his earliest appearances, Paxton was a background associate of the other diesels and often joined in heckling or tormenting other engines. "Blue Mountain Mystery" onward, his meek kindly persona is established.
* ChromaticArrangement: Of the three diesel engines introduced in ''Day of the Diesels'', he's the Green to Norman's Red and Sidney's Blue.
* CloudCuckooLander: Usually spacey, though he has occasional moments of clarity. He tries to warn Gordon to have his leaking boiler checked in "Gordon Runs Dry" for example.
* TheDitz: He is easily distracted.
* ExtremeDoormat: Though he will often ultimately draw the line when pushed into callous acts.
* {{Foil}}: Both him and Diesel are both Class 08's, and Paxton is simply the kind, yet ditzy counterpart to the callous and manipulative Diesel.
* KindheartedSimpleton: He is ditzy, but is one of the kindest diesels around.
* MinionWithAnFInEvil: To Diesel in "Blue Mountain Mystery". Also to Diesel 10 in "The Missing Christmas Decorations".
* NiceGuy: "Blue Mountain Mystery" onward, he's shown to be a pleasant and kind-hearted fellow; even Cranky gets along with him.
* TokenGoodTeammate: Like Boco and Mavis, he serves as one of the nicer diesels.
* ToxicFriendInfluence: Hangs around with other more antagonistic diesels. [[ADogNamedDog Diesel]] in particular has been shown able to manipulate him into doing immoral deeds.
** Ends up playing this himself in "The Lost Puff" when he convinces Thomas to play on the damaged tracks. He is horrified when it causes an accident however.
* WindmillCrusader: Seems to be a recurring pivot in his limelight episodes, ComicallyMissingThePoint in some way or other and going on a wild goose chase, be it for "lost puffs" or disappearing diesels.
[[/folder]]
[[folder:Norman]]
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/51a6c597458d503b38cedc606147f82f.jpg]]
--> Voiced in English by: Creator/KerryShale (''Day of the Diesels'' - Series 15), Creator/KeithWickham (Series 17 - Series 23)
--> Voiced in Japanese by: Ken Sanders (''Day of the Diesels''), Nobuaki Kanemitsu (Series 17), Kunihiro Kawamoto (Series 20 - Series 23)
--> Voiced in Latin American Spanish by: Juan Alfonso Carralero (Series 17 - Series 23)
--> Basis: Bulleid No. 11001
An orange-red Diesel and is Dennis's twin.
* AscendedExtra: ''Somewhat'' in ''[[WesternAnimation/ThomasAndFriendsTheGreatRace The Great Race]]'', where he nearly has a collision with Thomas.
* BigOlUnibrow: He has one.
* ChromaticArrangement: Of the three diesel engines introduced in ''Day of the Diesels'', he's the Red to Sidney's Blue and Paxton's Green.
* DemotedToExtra: He was introduced as a MerchandiseDriven character in ''WesternAnimation/DayOfTheDiesels'', and was promptly banished to background appearances with no speaking roles shortly afterwards. Like Paxton and Sidney, he started appearing more often during Brenner's run as writer, though unlike them, he has yet to have ADayInTheLimelight proper.
* NiceGuy: In comparison to his twin, he is much kinder and more of a hard worker.
** He's even nice to the steam engines.
* PolarOppositeTwins: Him and Dennis. Unlike Dennis who works fine, but is very lazy, Norman wants to be Really Useful, but breaks down often. While Dennis has two eyebrows, Norman has only one.
* TheReliableOne: To the point The Fat Controller outright considers it OOCIsSeriousBusiness if Norman screws something up.
[[/folder]]
[[folder:Sidney]]
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/5ddb6c7e98c24d5fec87987dc4bb5e04.png]]
-->''"What about me? I'm a decoration!"''
--> Voiced in English by: Creator/KerryShale (''Day of the Diesels''), Bob Golding (Series 17 - Series 23)
--> Voiced in Japanese by: Shoto Kashii (Series 17, ''The Great Race''), Ken Sanders (Series 18 - Series 23)
--> Voiced in Latin American Spanish by: Andrés García (Series 17 - Series 18), Geno Sánchez (Series 20 - Series 23)
--> Basis: British Railways Class 08 0-6-0DM
--> Built: 1952/1962
* ADayInTheLimelight: In ''Sidney Sings'' and ''The Case of the Puzzling Parts''.
* TheAllegedCar: Downplayed in that he was apparently otherwise functional, but he spent a good two years non-functional, stuck on a locomotive hoist without wheels of his own.
* AscendedExtra: He was promoted to the recurring cast in season 20, starring in his own episode, and has made many appearances since then.
* ButtMonkey: He spent two years on a hoist before getting new wheels.
* ChromaticArrangement: Of the three diesel engines introduced in ''Day of the Diesels'', he's the Blue to Norman's Red and Paxton's Green.
* ForgetfulJones: Sidney's known for being forgetful, even forgetting how long he's gone without his wheels.
* KindheartedSimpleton: He's not exactly the smartest engine in the shed, but he is one of the nicest engines on the island, even when he is up on a hoist.
* MinionWithAnFInEvil: Much like Paxton, he seems pretty docile and somewhat simple, despite hanging around with the other more antagonistic diesels.
* TokenGoodTeammate: Like Paxton and the other friendly diesels, he serves as one of the nicer ones.
* ThePollyanna: Despite his bad memory and luck, he tends to remain jolly and positive. He quite merrily waited ''two years'' hoisted up in the Dieselworks before finally getting his new wheels fitted.
* PutOnABus: He hadn't been seen in any episodes between "Day of the Diesels" and "The Missing Christmas Decorations", spending two whole years unable to move because he lacked wheels.
[[/folder]]
----
