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Thomas & Friends is one of the longest running children's series in the UK (Over 60 odd years, counting the books when they were first printed)
The Fat Controller/Sir Topham Hatt
The Controller of the railway, makes sure all of his engines are doing their best.
- A Father to His Men
- Catch Phrase: "Reeeeally Useful Engine." and "You have caused Confusion and Delay."
- Everyone Calls Him "Barkeep"
- Legacy Character: In the original books.
- Momma's Boy
- Nice Hat: He's incredibly fond of his top hat, so much that it has slipped into Companion Cube territory.
- Punny Name
- Silence, You Fool: Whenever he is tired of the engines blurbing or whistling randomly.
- Stern Controller
- Surrounded by Idiots: He keeps giving Thomas and Percy important jobs, regardless of how much he yells at them for screwing up.
The Steam Team
- Aesop Amnesia: Every single one of them.
- Freudian Trio:
- James is the Id, Henry the Ego, and Gordon the Superego.
- Percy is the Id, Toby the Ego, and Thomas the Superego.
- The Friends Who Never Hang: None of them really spend too much time together as a group. Justified, though. They do have jobs that take them all over the island. Edward and Toby are a prominent example.
- Nice, Mean and In-Between: Henry, Gordon, and James respectively.
- Undying Loyalty: To each other and the Fat Controller.
- Vitriolic Best Buds
Thomas the Tank Engine
A tank engine, the main character and namesake of the series, and the first engine to be purchased for the Fat Controller's railway. Thomas spent his time shunting coaches for bigger engines, and he longed to see the world. After helping to rescue James after an accident, he was dubbed a "Really Useful Engine" and was given his own branch line, along with two coaches, Annie and Clarabel.
- Acquired Situational Narcissism: After getting his own branch line. He tamed a bit after a few Break the Haughty moments.
- Aesop Amnesia
- Attention Whore: A big plot point in The Great Discovery. Played for laughs in Flash, Bang, Wallop!.
- Bratty Half-Pint: How he started out.
- Breaking the Fourth Wall: From Season 22 onwards, he's the narrator.
- Breakout Character: In the original books, Thomas wasn't as heavily focused on; Awdry had plenty of other parts of Sodor to write about. However, Thomas connected with the younger audience, and when the television series was launched, he was cast as the main star. Expands into both the show and the books since the release of the former led for publishers to insist for more Thomas-centric stories from the latter to tie in.
- Catch Phrase: "Fizzling Fireboxes!" "Cinders and ashes!"
- Character Development (Started as a Bratty Half-Pint in season one. Then became a less bratty but more arrogant character in season 2. In season three he had matured into a really cool big brother type to Percy. Reset with season 8.)
- Composite Character: As a result of his Breakout Character status and the limitations of the early budget, he did pretty much every odd job around the big station.
- The Hero
- Idiot Hero: Occasionally.
- Just a Kid: Thomas often gets teased by bigger engines for his small size and big ambitions. Spencer even called him a "tiny toy tank engine".
- The Messiah: Around season 3 he grows out of being the Bratty Half-Pint and becomes this. After season 7, this snaps back.
- Miles Gloriosus: In season 2.
- Never Tell Me the Odds: Word of God states that he's always trying to do jobs best left to bigger, stronger, faster and smarter engines.
- Older Than They Look: The E2 class he's based on is one of the oldest models on the show. His class was retired over a decade Gordon's entered production.
- Power Trio: Originally was one with Percy and Toby.
- Small Name, Big Ego
- Spotlight-Stealing Squad: From season 8 onwards the formula for dividing the episode focus goes Three episodes about Thomas to each episode about someone else.
- Unsympathetic Comedy Protagonist: In his earlier stories. Later stories focused more on his altruistic qualities, though he can still be arrogant every now and then.
Edward The Blue Engine
The oldest engine on the Fat Controller's railway, and the first character developed by the Rev. W. Awdry. Edward is a mixed-traffic engine with his own branch line. He's kind but firm, serving as a mentor for younger engines, though he is often teased about his age.
- Adaptational Wimp: As the television series progressed, Edward's wisdom slowly went away.
- Butt Monkey
- Cool Old Guy: In season 2, especially in Old Iron and Edward's Exploit.
- Demoted to Extra: In seasons 4-6. Given a bit more screentime later on, at the cost of his classic personality.
- Flat Character: Unlike most of the other highly flawed engines, there isn't much to Edward outside being a somewhat old and polite engine.
- The Load
- Nice Guy
- Out of Focus: The writers obviously don't find him very interesting. In Season 22, he's outright Demoted to Extra.
- Team Dad: To Bill and Ben.
- The Spock
- Vitriolic Best Buds: With James, especially in the HIT seasons.
- Yamato Nadeshiko: Male version.
Henry The Green Engine
A much larger mixed traffic engine, Henry started off as a poorly built engine bought by the Fat Controller when he was desperate for engines. He was once infamously stranded himself in a tunnel and was bricked up, until Gordon's express failed, when he came out and showed his worth. He required special Welsh coal to steam properly until his Flying Kipper accident, where he was completely rebuilt into a much more reliable engine.
- Colour-Coded for Your Convenience: In the books, he was originally green until he got a blue coat of paint after staying in a tunnel for awhile. The reason he got his old color back is because the Rev Awdry was fed up of people confusing him with Gordon in the book illustrations, when he was painted blue.
- Demoted to Extra: In Season 22 as part of the push for a Gender Equal Ensemble.
- Divergent Character Evolution: In early stories he mostly played the role of another arrogant tender engine similar to Gordon and James. Later stories gave him more pitiful qualities, while the show added Hidden Depths such as his love of nature.
- Dude, Where's My Respect?
- The Eeyore
- Emergency Transformation: His rebuild in The Flying Kipper.
- Flanderization: Despite his issues being fixed before the first season was out, he's often written as ill and grouchy.
- Flawed Prototype: Some unknown company stole various LNER blueprints and had a botched go at building their own engine. Henry is the result.
- Friend to All Living Things: Depending on what season. Particularly Henry's Forest in Season Three.
- Hypocrite: In Season 1, he expected Thomas to show him sympathy even after he'd indulged in No Sympathy to Thomas' dreams and mocked him relentlessly. Needless to say, Thomas didn't feel like being the bigger engine.
- Ill Guy: Until his rebuild. Oddly played up from season 8 onward, when he inexplicably requires special coal again.
- Jaded Washout
- Lovable Coward
- Mid-Season Upgrade: His rebuild in The Flying Kipper.
- Never Live It Down: Once, an engine attached to a train, was afraid of a few drops of rain.
- Power Trio: Ego.
- Took a Level In Badass: His rebuild at Crewe.
- Took a Level In Kindness: Following Henry's Forest.
Gordon The Big Engine
A big, powerful express engine whose main job is to pull the railway's express. He thinks very highly of himself and is quick to criticize others, though his delusions of grandeur are often what land him into trouble.
- Aloof Ally
- The Big Guy: Well it's right there in the title isn't it?
- Berserk Button: Please don't make Gordon pull trucks.
- Break the Haughty: What happens in every episode centered on him.
- British Stuffiness: Particularly in the UK version
- Catch Phrase: "Oh, the indignity!" "I'm the fastest/strongest and the best and I pull the Express!"
- Grumpy Bear
- Hair-Trigger Temper
- Inferiority Superiority Complex: Much of his haughtiness is derived from the fact that he's not a "proper" LNER engine.
- Jerk with a Heart of Gold
- Large Ham
- Last of His Kind: Along with Flying Scotsman, he's the last of the LNER A1-A3 line.
- Not So Different: Shown to be this to Thomas on a number of occasions. Might even be a case of Too Much Alike.
- Power Trio (with James and Henry): Superego.
- The Rival: To Thomas in season 1. To Spencer from season 7 onward.
- Upperclass Twit: In the later seasons, due to the Flanderization of his ego.
- Ungrateful Bastard: Old Reliable Edward finally calls him out on this.
- Vitriolic Best Buds: While any friendship he has qualifies as this, he fits it with Thomas the best.
James The Red Engine
A mixed traffic engine, James was riddled with issues when he first arrived, but later proved to be Really Useful by pulling the Express when Gordon failed. James can be called upon to perform virtually any duty, though he prefers coaches. Like Gordon's ego, James's vanity and admiration for his red paintwork often gets him in trouble.
- Aesop Amnesia
- Ambiguously Gay: His voice, particularly when Alec Baldwin was narrating, has led to many a theory on this.
- Attention Whore
- Break the Haughty
- Berserk Button: Never, ever remind James of the time with the bootlace, or any other of his accidents. Also don't threaten to paint him blue.
- Butt Monkey: Though he brings it on himself most of the time.
- The Chew Toy
- The Dandy: He loves his red paint.
- Determinator: So much he actually has a variant of his original Leitmotif for such instances.
- Foil: To Edward. They're the same model but couldn't be more different.
- Glory Seeker
- Hey, It's That Voice!: In Thomas & The Magic Railroad he's voiced by Susan Roman who's voice is shared with lot of characters. Not least of which Champ Bear and Sailor Jupiter.
- Jack of All Stats: As a mixed-traffic engine, James can pull either coaches or trucks.
- Jerkass: At his worst.
- Jerk with a Heart of Gold: He was somewhat less mean spirited early on, or at least felt bad when he realised the trouble he caused.
- Miles Gloriosus
- Power Trio: Id.
- Red Oni, Blue Oni: The red to Edward's blue.
- The Rival: Had one with Gordon early on. Has a friendly rivalry with Thomas is the later seasons.
Percy The Small Engine
A small, cheeky green engine purchased by the Fat Controller while Gordon, James and Henry were on strike. Nobody knows where he really came from or who built him. Percy currently works on Thomas's branch line. Considered as a junior member of the Steam Team, Percy enjoys being given important jobs and is earnest and sincere.
- Butt Monkey: He has the most accidents out of any other train in the series...and just about all of them involve getting covered in something sticky.
- Cartoon Creature: While most other characters are based on real locomotive classes, Percy is a heavily hybridized mix of several other steam engine designs.
- Determinator: Percy's Promise.
- The Ditz
- Heterosexual Life Partners: With Thomas.
- Hey, It's That Voice!: Linda Ballantyne in Thomas & The Magic Railroad.
- Kid Appeal Character
- The Lancer
- The Pig Pen: He has managed to get covered in lime, chocolate, fruit pulp (twice!), mud, treacle and dirt (too many times to count.)
- Sixth Ranger
- Spotlight-Stealing Squad: Especially in seasons 3, 5 and 6.
- Power Trio: Originally was one with Thomas and Toby.
Toby The Tram Engine
An elderly tram engine, Toby is unusual as his body's made of wood and he barely resembles a typical steam engine. He once worked on his own railway with his faithful coach Henrietta, until the line was closed down. Thankfully, the Fat Controller, who had visited the railway, brought him to his railway.
- Adaptational Wimp: Like Edward, his wisdom is often tossed aside on television.
- Big Brother Mentor: To Mavis and sometimes to Percy.
- Cool Old Guy
- Demoted to Extra: In Season 22 as part of the push to a Gender Equal Ensemble.
- Power Trio: Originally was one with Thomas and Percy.
- The Smart Guy: Before season 8. Although he did a pretty good Smart Guy job in the season 9 episode Emily Knows Best.
Emily The Beautiful Engine
A Stirling Single engine, and the only female of the Steam Team. When she first arrived on Sodor she mistakenly took Thomas's coaches, to the shock of the other Sodor engines. However, after Emily saved Thomas and Oliver from an accident and apologized, they became close friends, and she was given her own coaches.
- Canon Foreigner: The first of many.
- Cool Big Sis: Older even than Edward and offers good advice.
- The Chick
- Getting Crap Past the Radar: She has "big wheels".
- Hey, It's That Voice!: Jules de Jongh, the voice of Lt Green in the New Captain Scarlet series.
- Violent Glaswegian: In the UK version at least, though only when her Berserk Button gets pressed.
- Well, Excuse Me, Princess!
- Technology Marches On: An example of this. One day, they will replace steam engines.
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.
- Bitch in Sheep's Clothing
- Devil in Plain Sight
- Jerkass: The most prominent one of the show.
- Jerk with a Heart of Gold: The newer series has played with this in "Diesel's Special Delivery". Christopher Awdry's stand alone novel "Thomas And The Evil Diesel" also gave him a redeeming moment helping a derailed Clarabel.
- Manipulative Bastard: 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.
- This returns in Day of the Diesels: when seeing Percy distressed about Thomas hanging out with Belle instead of him, he convinces Percy to meet Diesel's friends at the Dieselworks.
- Smug Snake
- Visionary Villain: Started off as one.
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!"
- The Smurfette Principle: Until the movie, she and Daisy were the only female engines, neither of whom appeared very often.
- Team Mom: Was this occasionally with Bill and Ben, but now plays this role with most other engines.
'Arry and Bert
- Affably Evil: Over the years they've become less evil, but remain bullies toward the steam engines.
- Creepy Twins: Played this role in Stepney Gets Lost, but have been toned down later on.
- Single-Minded Twins
- Suspiciously Similar Substitute: To Splatter and Dodge.
- Those Two Bad Guys
The major antagonist of Thomas and the Magic Railroad. 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, but only in the feature-length specials.
- Affably Evil: By the time of Day of the Diesels.
- Big Bad
- Cartoon Creature: He's based on a real class of Diesel, BR Class 42, but the claw is a breach of British Rail regulations as it makes him too tall to run.
- Disney Villain Death: Not a death per se, but his demise is brought around by falling off a viaduct.
- Establishing Character Moment: In The Movie, he roars throgh as station, kciking up dust shouting "Get outta my way! I've unfinished business here I wanna finish it FAST!" He also leaves Gordon, of all engines, shaking in fear.
- Evil Laugh
- For the Evulz: dumping sneezing powder all over Tidmouth Sheds Yards has got to be this.
- Large and In Charge: He is the self elected head of the diesels by Day of the Diesels, and he's a warship diesel.
- Large Ham: In The Movie.
- Obviously Evil: He has a menacing claw on his roof.
- Silence, You Fool: When his entourage are bickering in Day of the Diesels, he shouts them quiet. Also prominent in Thomas and The Magic Railroad.
- Vile Villain Saccharine Show: Compared to the actual series, where most of the bad guys were easily controlled by the Fat Controller, Diesel 10 in The Movie with his plans of destroying all steam engines can be seen as this. Was dialed back considerably in the series as he became but a smug bully.
- Xanatos Roulette - His plans in Day of The Diesels can be considered as this, as they rely on circumstance he could have hardly picked out.
- The Storyteller
- Talk Like a Pirate: As a dockside diesel, he knows a lot of nautical slang and puts it to use.
- Big Ol' Unibrow: Norman.
- Different As Night and Day: Dennis 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.
- Heel Face Turn: Splatter and Dodge.
- Lazy Bum: Dennis.
- Minion with an F In Evil: Splatter and Dodge.
Diesel 10: If she can be destroyed...
Dodge: Uh, destroyed? Did you say destroyed?
Dodge: Like, hurt?!
- Nice Guy: Boco and Derek.
- Non-Identical Twins: Dennis and Norman.
- Plucky Comic Relief: Splatter and Dodge in The Movie.
- Put on a Bus: Dennis, who has not been in an episode since season 9, is mentioned to be Norman's twin.
- Long Bus Trip: Derek, who first appeared in season 5 (and wasn't even named), and was last seen in a brief cameo in Calling All Engines.
- Quickly-Demoted Woman: Daisy. The last episode dedicated to her was back in season 4, and she made a brief non-speaking role in season 8.
- The Slacker: Dennis.
- Those Two Guys: Den and Dart in seasons 15 and 16.
A Cuban narrow gauge engine, Victor transports parts all through the Steamworks, as well as giving orders and helping diagnose problems with engines who come in. As the only narrow gauge engine owned by the Fat Controller, Victor can sometimes leave the Steamworks to help the small engines.
- Dark and Troubled Past: May have something to do with Luke's backstory.
- Gadgeteer Genius
- Nice Guy
- The Smart Guy
Kevin the Crane
A three-wheeled mobile crane and Victor's assistant. Kevin is faster than Victor at delivering parts, except Kevin is extremely clumsy.
Sodor Search and Rescue Team
A large tank engine with two water canons fitted on top of her tanks. Belle is the only girl of the rescue team, and the only steam engine.
A big, strong breakdown truck.
- Ascended Extra: He was originally meant to be a major character in season 5, but due to poor planning, he ended up only as a background extra. In season 15 he finally got an episode, Stuck on You.
- Catch Phrase: "Ready for action!"
- Early-Bird Cameo: He appears briefly in the first episode of the fifth season before being introduced in the following episode.
- Recurring Extra: Until season 15.
- Suddenly Voiced: In season 15, ten seasons after his debut.
- Why Do You Keep Changing Jobs?: Prior to his debut episode, he has been seen doing countless other jobs, including rebuilding Great Waterton and Tidmouth Sheds, delivering engine and windmill parts, pulling the Chinese Dragon, clearing rubble, rescuing stranded vehicles, lowering boats into the sea...
A life boat who came to Sodor during the construction of the Sa RC.
- Catch Phrase: "Full steam ahead!"
- Demoted to Extra: He has done nothing of value since his introduction in Misty Island Rescue.
A big, American red fire engine brought to Sodor based on Belle's suggestion. He has specialized wheels under his frame that allow him to travel on rails as well as the road.
- Large Ham
- Miles Gloriosus: His own insecurities have prevented him from doing his job properly on at least two occasions. Diesel has even called him out on not doing much rescuing.
Diesel: You're never busy. You just stand around looking fancy!
Flynn: ...I'm...I'm...waiting to be busy!
Harold the Helicopter
Harold is owned by the coastguard on Sodor and lived at Dryaw airfield by Thomas' Branch Line before becoming part of the Sa RC. When Harold first met Percy he stated that railways were "slow and out-of-date", but was proven wrong when Percy later beat him in a race.
- Heel Face Turn: Was something of an antagonist in his first episode, but would later help rescue Thomas in The Runaway and helped Percy in Percy's Promise, and has since been portrayed in a positive light.
A large, red steam crane. Rocky was thought of as "new-fangled nonsense" by Edward when he first arrived, but proved his worth after lifting Gordon back onto the rails after a serious accident.
- Gentle Giant
- The Leader: Something of one to the Rescue Team. He has a radio built into his cab that lets him hear orders from the Rescue Center and give orders to the rest of the team.
Duck The Great Western Engine
- Break the Haughty: What Diesel pulls on him.
- Brother Chuck
- Catch Phrase: "Beg Pardon Sir..."
- Humiliation Conga: As if the trucks forcing him to crash into a barber shop wasn't enough, the angry owner decided to shave and lather him!
- Misplaced Nationalism: Or at least something very like it. In his debut episode he's fond of claiming that there are two ways of doing things, "the Great Western way or the wrong way". Fortunately he got over it quite quickly.
- Motor Mouth: The whole plotline of "Donald's Duck" kicked off after Donald told him to zip it.
- Only Known by Their Nickname: His given name is 'Montague,' but most call him 'Duck,' after his tendency to waddle on the rails. Henry, Gordon, and James have quacked at him in the past.
Donald and Douglas, the Scottish Twins
- Adaptation Dye Job: In the books, they were painted blue after arriving at Sodor. With three blue engines already, the TV producers wisely decided to keep their more distinctive black paint.
- Bonnie Scotland: Their leitmotif even has bagpipes in the background.
- Brother Chuck
- Bully Hunter: Donald.
- Noble Fugitive
- Single-Minded Twins
- Trigger: Do not like to talk about scrapping.
- Trickster Twins Notice that they are the almost the only characters labeled by name and number: Hatt specifically insisted on this after one too many Twin Switch gambits.
- Violent Glaswegian: "Spite Douggie would ye? Take That!"
Bill and Ben the Quarry Engines
- Bratty Half-Pint
- Gossipy Hens: In 'The Diseasal'
- Identical Twin ID Tag: Their numbers and name plates.
- Single-Minded Twins
Oliver The Western Engine
- Acquired Situational Narcissism: In the episode Oliver Owns Up.
- The Dreaded: After that mess with S.C. Ruffy, the trucks are terrified of him.
- Noble Fugitive
Lady the Magic Engine
A purple and gold tank engine who only appears in Thomas and the Magic Railroad and in a dream sequence in Calling All Engines. She runs the Magic Railroad that connects Shining Time to Sodor, and is the source of the Gold Dust required to keep Mr. Conductor and Sodor alive.
- Cartoon Creature: She was designed by Britt Allcroft
- The Chick: The only female engine in the film.
- Cute Witch
- Dark and Troubled Past: She was destroyed once by Diesel 10, and Burnett Stone kept her locked in Muffle Mountain, doing what he could to repair her.
- Flat Character: Despite being a major point of The Movie, not much is known about her personality at all.
A private engine owned by the Duke and Duchess of Boxford, Gordon's distant cousin, and a snob that none of the Sodor engines can stand.
- Attention Whore: Played up in Welcome, Stafford!.
- Break the Haughty: Almost every appearance of him involves this.
- Depending on the Writer: Some early appearances suggested that he was a diesel.
- Large Ham
- Light Is Not Good: Although when compared to diesels, the steam engines are portrayed as friendly and reliable, Spencer is always portrayed in a negative light; a big-headed showoff that likes making the Sodor engines miserable. He outright reached villain status in Hero of the Rails, when he not only pestered and annoyed the Sodor engines, but also attempted to send Hiro to the smelter's yard, with no solid reason except to make Thomas miserable.
- Not-So-Harmless Villain: In Hero of the Rails.
- The Rival: To Gordon and Thomas.
- Smug Snake
- Upperclass Twit
An old, wise engine who came from Japan many years ago. He debuted in Hero of the Rails, where Thomas found him hidden away in an old forest and had his friends help repair him. He has since made several minor appearances.
- Cool Old Guy
- Demoted to Extra
- Noble Fugitive
- Token Minority: An especially profitable one; Hiro proved to be a favorite in Japan almost immediately.
- Annoying Laugh: The Logging Locos.
- Butt Monkey: Stafford.
- Catch Phrase:
- Ferdinand: "That's right!"
- Fergus: "Do it right!"
- Scruff: "Let's get scrunching!"
- Control Freak: Fergus.
- Everything Is Big In Pennsylvania: Hank the American stereotype engine, who is massive, easily towering over the Sodor engines. Keep in mind that this is an example of Truth in Television, as American steam locomotives had to haul heavier cargoes over rougher terrain (often with less stops for fuel) then their smaller British counterparts.
- Finishing Each Other's Sentences: Bash and Dash. All the time.
- Genki Girl: Rosie.
- Gentle Giant: Murdoch, Hank, and Ferdinand.
- Identical Stranger: Billy (season 11) and Charlie (season 13) are the exact same prototype.
- Nerd Glasses: Whiff.
- The Pig Pen: Whiff.
- Single-Minded Twins: Bash and Dash.
- Youthful Freckles: Rosie.
The Skarloey Railway
The first and oldest engine on the Skarloey Railway, named after a lake at one end of the railway.
- Cool Old Guy
- Depending on the Writer: Is he young or old? Brave or timid? It varies, although it's worth mentioning that he started as an old engine and was depicted as young later.
- Older Than They Look: Skarloey was built in 1864, making him 148 years old.
Named after a waterfall on the railway, Rheneas is the second engine.
- Determinator (Gallant Old Engine)
- Adaptation Dye Job: The show had keep his blue paint job from when he worked with Duke, while in the books he was repainted red to match Skarloey and Rheneas.
- Break the Haughty
- I Have Many Names: His name was Falcon before joining the Skarloey Railway.
- Mid-Season Upgrade: His "steamroller" wheels.
- Put on a Bus: He came back though, much to the delight of the fanbase.
- Upperclass Twit
- Adaptation Dye Job: Same situation as Sir Handel, except green instead of blue.
- All of the Other Reindeer: His special funnel. "Until they learned how useful it is!"
- I Have Many Names: His name was Stuart before joining the Skarloey Railway.
- Mid-Season Upgrade: His special funnel.
- Adaptation Dye Job: Was painted dark grey in the books, but is orange on the show.
- Dark Is Not Evil: Despite being a diesel, he is quite friendly and helpful towards the steam engines.
- She's a Man In Japan: In season 9, Rusty was accidentally referred to as a girl. To be fair, in The Railway Series books, his gender was only mentioned once, and was never mentioned prior in the television series.
- Spotlight-Stealing Squad
- Token Diesel: He's the only diesel on the Skarloey Railway.
- Adaptation Dye Job: Was painted red in the books, but became yellow in the television series.
- Drives Like Crazy: One episode was dedicated to Duncan's "Rock n' Roll", and ends with him derailing.
- Jerkass: At his worst.
- Jerk with a Heart of Gold: At his best.
- The Complainer Is Always Wrong
- Violent Glaswegian: When he loses his temper.
- Chuck Cunningham Syndrome
- Cool Old Guy
- Intergenerational Friendship (With Sir Handel and Peter Sam, or Falcon and Stuart, as they were known back then.)
- Nightmare Fuel Station Attendant: When he tells the story of Smudger.
A double-ended Fairlie locomotive introduced in season 9. One end is Mighty, and the other is Mac.
- The Big Guy
- Different As Night and Day: Mac is younger and more hot-headed, Mighty is older and more conservative.
- Body Horror: Well, as close as you'll get with a children's show about talking trains. Being an articulated Fairlie-type locomotive, both of them share the same body with each having a face at either end. They seem fine with it, though.
- Those Two Guys
An upcoming character from Blue Mountain Mystery. He's a small, green pannier tank engine who lives at the Blue Mountain Quarry.
- Dark and Troubled Past: He's somehow connected to an incident of an engine falling into the sea, and thinks if he's ever found, he'll be sent away from Sodor forever.
- Shrinking Violet: When other engines try to talk to him, he scurries away into tunnels and won't come out.
Bertie the Bus
- Bus Best Friend: Something of the vehicle equivalent of mixed race (or species) friendship at least.
- Fantastic Racism: Briefly in "Trust Thomas" after the engines fail to get tar for his broken roads, he labels them unreliable. He takes it back completely when Thomas gets this fixed.
- Friendly Rival: His races with Thomas (though to prove the worth of their respective vehicles) are rather playful and in good fun.