Duncan (Thomas the Tank Engine)

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Number 6
Class Andrew Barclay E Class
Livery SR red with blue and yellow lining (1950), Amber with black and gold lining (since 1950)
Built 1950
Builder Andrew Barclay and Co. Ltd.
Designer Andrew Barclay
Affiliations Neutral, later good
Date of Birth June 24, 1950
First Appearance Home at Last
Voice Actors Tom Stourton (UK/USA)

Duncan is a narrow gauge tank engine who came to the Skarloey Railway after Peter Sam's accident with the slate trucks. He is the main tritagonist of the narrow gauge engines (after Skarloey and Rheneas)

Allies: Thomas, Edward, Henry, Gordon, James, Percy, Toby, Duck, Donald, Douglas, Oliver, Emily, Stepney, Terence, Skarloey, Rheneas, Sir Handel, Peter Sam, Rusty, Duke, Freddie, Mighty Mac, The Thin Controller (boss), Elizabeth, Madge, Colin, Proteus, Luke, Owen, Merrick, Derek, BoCo, Spencer

Enemies: Diesel, George, Smudger, Rusty (formerly), Wickem, Steam Engine, Bulgy, Bulstrode, D261, Arry, Bert, Bulstrode, Splatter, Dodge

Railway Series history

Duncan was introduced in the story Home at Last, in the series' fourteenth volume. In earlier books, he caused trouble for the Thin Controller by getting stuck in a tunnel, derailing due to his swaying, and even stalling on a viaduct with a train full of passengers. However, in later volumes, he mellowed out. He stayed on task and did his best to help out in the most recent of stories.

Duncan in the TV series

Duncan was introduced in the adaptation of Home at Last in the fourth run of Thomas the Tank Engine and Friends. Rather than having his red coat of paint with the other engines in the books, he is painted bronze yellow in the TV series. A number of roles he had in the Reverend's books were televised in the same season, but all the stories featuring him in future seasons were originally written by hired writers, as well as the director and creator Britt Allcroft.

Duncan continues to make mistakes while being stubborn and ignorant in current seasons, seemingly forgetting the lessons he's learned in the past. He has appeared in every season since his introduction (with the exception of Season 8, which featured no Narrow Gauge engines)

In the Japanese version, he is voiced by Ryoichi Tanaka.

Villainous Acts

Season 4

  • Home at Last - Rocking and Rolling, causing a tunnel to collapse on him, and blaming the railway for it.
  • Rock 'n' Roll - Insulting Rusty, blaming him for being late, wanting him to be sent away, rocking and rolling, causing him to derail.
  • Passengers and Polish - Complaining about how he's not polished, complaining about having to rescue Skarloey's passengers, refusing help them midway on a viaduct.

Season 5

  • Duncan Gets Spooked - Teasing Peter Sam after his freight cars fell into the ravine.

Season 6

  • Dunkin Duncan - Being impatient at the incline, ordering the other engines about, insulting the other engines.
  • Faulty Whistle - Telling Peter Sam an Engine's not an engine without a whistle, whistling rudely at sheep, Elizabeth, and Terence.

Season 7

  • The Runaway Elephant - Insulting the other engines, ignoring the stationmaster's warning to wait for the brakevan.
  • Trusty Rusty - Disobeying Rusty's warning not to cross the old wooden bridge.

Season 10

  • Duncan's Bluff - Telling James he's late and that doing two jobs at once is too hard for him, hiding the coal trucks to trick James during their competition.


Major Appearances

Season 4
  • Home at Last
  • Rock 'n Roll
  • Passengers and Polish
  • Gallant Old Engine
Season 5
  • Duncan Gets Spooked
Season 6
  • Dunkin Duncan
  • Faulty Whistles
Season 7
  • The Runaway Elephant
  • Trusty Rusty
Season 9
  • Tuneful Toots
  • The Magic Lamp
  • Duncan and the Old Mine
  • Skarloey the Brave
Season 10
  • A Smooth Ride (does not speak)
  • Duncan Drops A Clanger
  • Thomas's Tricky Tree
  • Wharf and Peace
  • Duncan's Bluff
Season 11
  • Duncan Does It All
  • Sir Handel In Charge
  • Cool Truckings
Season 12
  • Mountain Marvel
  • Duncan and the Hot Air Balloon
  • The Man In The Hills
  • Push Me, Push You!
Season 16

Season 18

  • Duncan and the Grumpy Passenger
  • Duncan the Humbug


Season 4
  • Bulldog
  • Peter Sam and the Refreshment Lady
  • Special Funnel
  • Steamroller
Season 5
  • Snow
Season 7
  • The Old Bridge
  • The Refreshment Lady's Tea Shop
  • Rheneas and the Roller Coaster
  • The Grand Opening
  • Not So Hasty Puddings
Season 9
  • Mighty Mac
Season 10
  • Follow that Flour!
Season 11
  • Wash Behind Your Buffers!
Season 12
  • The Party Surprise
Season 13
  • Steamy Sodor (cameo, mentioned, with little engines)

Duncan should most likely appear in full CGI in the eighteenth season. 


Duncan has also been adapted in his TV series form into several products, which include:

  • An Ertl Thomas the Tank Engine and Friends die-cast model
  • A Thomas & Friends Wooden Railway model
  • A Tomica/Track Master motorised engine and wind-up toy
  • A Take-Along Thomas & Friends die-cast model


Duncan is based on Douglas (Talyllyn Railway), a 0-4-0 engine built in 1918 that works on the Talyllyn Railway in Tywyn, Wales. The engine is currently running under the guise of the character. Duncan is depicted through the engine with his original red coat and a Scottish cap above the face.


Duncan the Narrow Gauge Engine's Theme00:35

Duncan the Narrow Gauge Engine's Theme

Counterparts (Boy version) (Thomas version)

Attention niels epting WARNING: You may add appropriate counterparts. But, do NOT delete any.

Counterparts (Girl version)

Attention niels epting WARNING: You may add appropriate counterparts. But, do NOT delete any.

Counterparts (Skarloey version)

Attention niels epting WARNING: You may add appropriate counterparts. But, do NOT delete any.

  • James (Thomas the Tank Engine and Friends)
  • Top Hat (TUGS/Salty's Lighthouse)
  • Schemer (Shining Time Station)
  • Oogtar (Super Mario Bros.)
  • Wolf O'Donnell (Star Fox)
  • Antoine (Sonic the Hedgehog)
  • Roy (Garfield and Friends)
  • Dick Dastardly (Wacky Races/Dastardly & Muttley)
  • Plucky Duck (Tiny Toon Adventures)
  • Mr. Plotz (Animaniacs)
  • Drew Pickles (Rugrats)
  • Norval the Fish (Dr Seuss/The Wubbulous World of Dr Seuss)
  • Stuck-up Steve (Horrid Henry)
  • Moe Syzlak (The Simpsons)
  • Glenn Quagmire (Family Guy)
  • Choo Choo (Rudolph The Red Nosed Reindeer)
  • Sultan (Aladdin)
  • Gene (Wreck-It Ralph)
  • Ramone or Luigi (Cars 1 & 2)
  • Melman The Giraffe (Madagascar)
  • Ruben Rabbit (Skipper & Skeeto)
  • Eric (3 Friends and Jerry)
  • Grover or Bert (Sesame Street)
  • Statler or Waldorf (Kermit's Swamp Years)
  • Lars Alexandersson (Tekken)
  • Zero (Mega Man X)


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