Donald and Douglas (originally known by their old numbers, 57646 and 57647, respectively) are twin Scottish mixed-traffic engines, specifically Caledonian Railway McIntosh 812 class engines. Douglas tagged along with Donald to Sodor in order to escape from scrap, despite Donald being the only engine expected. After proving themselves to be really useful, they were both allowed to stay. They now work as utility engines on the NWR; working wherever they are needed. They work primarily on The Little Western, but sometimes on Edward's Branch Line and the Main Line.


Donald and Douglas were designed by John F. McIntosh and built by the St. Rollox Works for the Caledonian Railway. Upon nationalisation, they became part of the Scottish Region of British Railways, where they were renumbered 57646 and 57647. In 1959, Sir Topham Hatt needed a goods engine and by his request, BR decided to transfer 57646 (Donald) to Sodor.

To Sir Topham Hatt's surprise though, two engines arrived. Donald's twin Douglas (57647) could not stand to be separated from his brother, and was smart enough to realize he would eventually be scrapped if he stayed in Scotland. Unfortunately for Sir Topham Hatt and any other worker, neither engine could be told apart: both claimed to have forgotten their numbers, and indeed their numberplates had "slyly slipped off" during the journey from Scotland. This caused the Fat Controller to keep both until he could determine which engine was freeloading on his hospitality. It was later revealed that this piece of skulduggery had been planned not only by the two engines, but also by their drivers and firemen, who were related as well.

The Fat Controller was unaware of Douglas' motive and threatened the two that whichever engine he found out to be the truant would be sent home. Both engines resolved to give outstanding service so that Hatt would want to keep both of them. This plan quickly went to pieces, however, after Douglas accidentally shunted Thomas' special coach, full of passengers, into a siding at Tidmouth, causing a great deal of fury for the passengers. Things were more complicated when Donald crashed into a signalbox at Tidmouth and Douglas accidentally destroyed the Spiteful Brake Van, who had caused trouble for him earlier.

Despite all this grief, the twins' professionalism, competency, strong work ethic, and personable natures had begun to win them support, particularly when they demonstrated an aptitude for snowplough work that they had learned in Scotland. After rescuing Henry from just such a snowy ordeal, the other engines came over to Donald and Douglas' side which ultimately led to the engines of Sodor taking industrial action. After a suggestion by Edward, and being pushed into it by GordonPercy was presented to the Fat Controller as a deputation, arguing the twins' case on their behalf and pleading that, if sent away, they would be scrapped. Sir Topham Hatt's reaction to this was mixed - though he did not approve or appreciate them trying to interfere with his decision-making, he understood the engines' feelings upon the matters of saving steam engines and scrapping in general. In the end, Percy's statement and the twins' excellent performance was enough for Sir Topham Hatt to take pity on the twins and keep both. He demonstrated this intent with an offer of a fresh coat of paint for both engines, as well as giving them both nameplates to avoid any more confusion. By their request they were painted NWR blue, in honour of their Caledonian heritage.

In 1967, Douglas helped save Oliver, Isabel and Toad from the prospect of scrap. The Fat Controller soon found out and arranged for the three to be repaired and painted in Great Western colours. Toad asked to be Douglas' brake van as a show of gratitude.

Since then, the twins have, by all accounts, "transformed" goods traffic on the main line. Such is their versatility that they regularly see service on the Little Western and Edward's Branch Line, as well as duties as station-pilots at Tidmouth. A turntable has been provided for them at Arlesburgh, although briefly decommissioned after Oliver was pushed into it by some trucks.

After Donald teased Duck about his "quacking", Duck's crew got a humourous payback by slipping a small duckling into Donald's tender. When discovered, the duckling became friends with Donald and his crew, and eventually settled down at Haultraugh, where a small pond was nearby. She was named Dilly by the stationmaster, but she is known to everyone else as Donald's duck.

Such a demanding work-load has begun to tax them, however, and in 1993 the Fat Controller borrowed a navy saddletank named Wilbert from the Dean Forest Railway to deputise for them on the Arlesburgh branch, with the intention of obtaining another engine of Wilbert's class to permanently fill that role.

Donald and Douglas work together nearly all the time, but they sometimes have a falling out. This was proven when the two crashed into Trevor's hay cart. Donald accused Douglas of pushing him into the cart while Douglas accused Donald of pulling him. The twins refused speak to each other. When Duck needed help at the Sodor Ironworks, Donald took the opportunity to get away from Douglas. While Douglas missed his twin and was ready to make up, Donald began to experience lapses in competence and demanded an apology. Eventually, Donald wasn't looking where he was going and crashed through some buffers into a ditch. As soon as Douglas heard from Duck that Donald was in trouble, he immediately rushed over to help his twin, and the two made up. 

Later, Castle Loch was to be reopened by Lord Callan, so Donald and Douglas took some equipment up to the castle. The two argued whether or not the monster inside the lake existed or not. Unfortunately for the twins, a landslide occurs and the two became stranded. The Fat Controller promised help, but soon night came. The twins saw a shape moving towards them on the causeway. Donald and Douglas were petrified until they realized it was only Harvey who had come to help. Soon, the twins got their equipment to the castle on time and Lord Callan called them Really Useful engines.

In 2007, some points were jammed and Gordon was sent to pick up the engineer to mend them, but instead picked up the carpenter. Gordon reversed to Abbey hoping to collect the engineer, but Douglas was in the way. Gordon decided that Douglas should go to Wellsworth and Donald to go to Maron to collect the engineer, and Donald bring him to Douglas, and Douglas bring him back to Gordon. The plan was carried out and the points were fixed; Gordon thanked the twins for helping him.

Afterwards, Harvey was sent to help the twins after a tree had been knocked down. Thomas, however, misunderstood the situation and accidentally sent Harvey the wrong way. Thomas was proud of himself for being so helpful until he saw that Donald and Douglas were stuck and needed Harvey's help. He found Harvey and gave him the correct directions needed to help the twins. Thanks to Thomas and Harvey, the line was cleared and the twins were on their way.

In 2015, they helped with the construction of the Harwick Branch Line, delivering most of the heavy construction materials. When Douglas went over the unstable track bed that hides the tunnel into Calles Cavern it began to crack, and the workmen only just stopped Donald from going over it. The twins witnessed Rocky lifting The Pirate Ship out of the cavern, and helped deliver it to Arlesburgh Harbour. They later attended the branch line's opening ceremony.

In the 2016, they worked together to clear snow from the tracks during winter, but they kept arguing over which tracks to clear next. Douglas was accidentally separated from his tender and left behind by Donald, who eventually found him in a siding with some help from Toby.

Donald and Douglas were among the engines who asked The Fat Controller to take them to The Great Railway Show, but they were not chosen.


Donald and Douglas are Scottish twin engines. They are practical, peppery, proud and level-minded, but, despite their maturity, they enjoy playing practical jokes and have been known to impersonate one another in the past. They were fitted with nameplates to specifically end this element of their humour.

Donald and Douglas are very able workers, strong performers, and handle any task well. They are fully capable of being firm with the other big engines, such as Gordon and Henry, and even the Troublesome Trucks know better than to try their tricks on them. They are both used to harsh winter conditions too. Coupled back to back, with a coach between their tenders, they are very capable of patrolling the lines, clearing them of the snow. The twins both pull their weight on the Main Line and both Duck and Edward's branch lines. They can enjoy a joke with any engine. They are happy to act as the brawn of the Fat Controller's steam-driven goods haulers. Between the two, Donald tends to be the charming, witty joker whereas Douglas is the smart, quick-thinking, calmer-natured one of the pair. Both display a keen sense of wit and the pair usually get to have the last laugh, more often taking the moral high ground. But that does not mean they will not be just a little bit smug about it when a deserving engine meets their comeuppance.

Donald and Douglas hate to be parted from each other, but, like most twins, they often have their arguments among themselves and can squabble with one another. Also, Donald and Douglas used to have a strong dislike of diesels. But over time their dislike for diesels has softened and they appeared to have grown accustomed to their diesel companions.


Donald and Douglas are both based on the Caledonian Railway McIntosh 812 Class 0-6-0 goods engine. Their numbers, however, would realistically place them in the 652 sub-class.


According to the Railway Series, Donald and Douglas were painted black from construction and arrived on Sodor in the BR's black goods livery with red-and-white lining on their tenders. They remained as such (with the addition of numbers on their tenders in yellow with red borders) until it was decided that both engines could stay, at which point they requested to be repainted in the North Western Railway's sky blue livery with red-and-yellow lining. They apparently like the colour, as it reminds them of the Caledonian Railway, where many of their shedmates carried a similar shade of blue. They received red nameplates with their names in gold at the same time.

In The Railway Series, they carry two builder's plates on the sides of their cabs.

In The Television Series, the twins arrived in BR lined black and have remained in this livery ever since.


The Railway Series

  • The Twin Engines - Hullo Twins!, The Missing Coach, Break Van and The Deputation
  • Branch Line Engines - Thomas Comes to Breakfast (Donald does not speak, Douglas mentioned)
  • Stepney the "Bluebell" Engine - Bluebells of England (Douglas only) and Bowled Out
  • Mountain Engines - Mountain Engine (Donald only) and Danger Points (Donald does not speak)
  • Main Line Engines - Edward's Exploit
  • Small Railway Engines - Ballast (either one not seen)
  • Enterprising Engines - Tenders for Henry (Douglas; cameo), Super Rescue (Donald does not speak), Escape (Donald only) and Little Western
  • Oliver the Western Engine - Donald's Duck (Douglas does not speak), Resource and Sagacity, Toad Stands By (Douglas only) and Bulgy (Donald only mentioned)
  • Duke the Lost Engine - Sleeping Beauty (Donald only; does not speak)
  • James and the Diesel Engines - Old Stuck-Up (Douglas does not speak), Crossed Lines (Donald only), Fire-Engine (Douglas mentioned) and Deep Freeze (Donald or Douglas cameo)
  • More About Thomas the Tank Engine - The Runaway (mentioned)
  • Gordon the High-Speed Engine - High-Speed Gordon (Douglas mistaken for Donald), Fire Escape and Gordon Proves His Point (Douglas only)
  • Thomas and the Twins - Scrambled Eggs (mentioned)
  • Jock the New Engine - Jock (Douglas only)
  • Henry and the Express - Out of Puff, Sliding Scales (cameo) and Henry Sees Red (Donald does not speak; Douglas cameo)
  • Wilbert the Forest Engine - Percy's Porridge (do not speak)
  • Thomas and the Fat Controller's Engines - Edward and the Cabbages (mentioned) and Golden Jubilee (Douglas does not speak)
  • Thomas and his Friends - Buffer Bashing (Douglas does not speak) and Centenary (mentioned)
  • Thomas and the Missing Christmas Tree

Thomas & Friends

  • Series 2 - Brake Van, The Deputation, Thomas Comes to Breakfast and Thomas and the Missing Christmas Tree
  • Series 3 - Gordon and the Famous Visitor (cameo), Donald's Duck (Douglas cameo), Henry's Forest (Donald does not speak; Douglas cameo), Tender Engines (Donald only), Escape (Douglas only), Oliver Owns Up, and Thomas and Percy's Christmas Adventure (Donald only; cameo)
  • Series 4 - Four Little Engines (Douglas only; cameo), Rusty to the Rescue (Douglas only), Thomas and Stepney (Douglas only), Train Stops Play (Donald only; cameo), Bowled Out, Toad Stands By (Douglas only), Thomas and the Special Letter and Paint Pots and Queens (Donald only; cameo)
  • Series 5 - Horrid Lorry (Donald only; cameo) and Make Someone Happy (Donald only; cameo)
  • Series 6 - Harvey to the Rescue (Donald only; cameo), A Bad Day for Harold the Helicopter (Douglas only; cameo), Elizabeth the Vintage Lorry (Donald only; cameo), Twin Trouble, Percy and the Haunted Mine, James and the Red Balloon and Thomas the Jet Engine (Donald only; cameo)
  • Series 7 - Percy Gets it Right (Donald only; cameo), Edward's Brass Brand (Donald only; cameo), Bad Day at Castle Loch, Salty's Stormy Tale (Douglas only; cameo), Peace and Quiet (Donald deleted scene cameo; Douglas; cameo), Harold and the Flying Horse (Donald only; stock footage cameo) and Gordon and Spencer (Douglas only; cameo)
  • Series 8 - Edward the Great (deleted scene) and You Can Do It, Toby! (mentioned)
  • Series 11 - Gordon and the Engineer
  • Series 12 - Saved You!
  • Series 20 - Toby's New Friend (cameo) and Love Me Tender
  • Series 21 - Dowager Hatt's Busy Day (cameo) and Emily in the Middle
  • Series 22 - Counting on Nia (life lesson; cameo)

They may appear in the twenty-fifth series.


  • 2015 - Sodor's Legend of the Lost Treasure
  • 2016 - The Great Race
  • 2017 - Journey Beyond Sodor (cameo)
  • 2018 - Big World! Big Adventures!

Voice Actors


  • Joe Mills (UK/US; Sodor's Legend of the Lost Treasure and The Great Race only)
  • Rob Rackstraw (UK/US; twentieth series onwards, excluding The Great Race)
  • Yūki Satō (Japan; second - seventh series)
  • Kyousei Tsukui (Japan; eleventh series onwards, excluding The Great Race and Big World! Big Adventures!)
  • Nozomu Sasaki (Japan; The Great Race and Big World! Big Adventures! only)
  • Fabrice Trojani (France and French speaking Canada)
  • Piotr Bajtlik (Poland; Sodor's Legend of the Lost Treasure only)
  • Józef Pawłowski (Poland; twentieth series onwards)
  • Nir Ron (Israel; Sodor's Legend of the Lost Treasure only)
  • Zvika Fohrman (Israel; The Great Race onwards)
  • Fred Meijer (The Netherlands; Sodor's Legend of the Lost Treasure onwards)
  • Ricardo Bautista (Latin America; Sodor's Legend of the Lost Treasure onwards)
  • Carsten Krabbe (Germany; Sodor's Legend of the Lost Treasure onwards)


  • Joe Mills (UK/US; Sodor's Legend of the Lost Treasure onwards)
  • Takeshi Endo (Japan; second - seventh series, excluding Thomas Comes to Breakfast and Thomas and the Special Letter)
  • Yūki Satō (Japan; Thomas Comes to Breakfast and Thomas and the Special Letter only)
  • Kyousei Tsukui (Japan; eleventh series onwards, excluding The Great Race and Big World! Big Adventures!)
  • Nozomu Sasaki (Japan; The Great Race only and Big World! Big Adventures! only)
  • Bernard Demory (France and French speaking Canada; sixth series only)
  • TBA (France and French speaking Canada; seventh-twelfth series)
  • Fabrice Trojani (France and French speaking Canada; Sodor's Legend of the Lost Treasure onwards)
  • Cezary Kwieciński (Poland; Sodor's Legend of the Lost Treasure - twentieth series)
  • Przemysław Glapiński (Poland; twenty-first series onwards)
  • Gadi Levy (Israel; Sodor's Legend of the Lost Treasure onwards)
  • Fred Meijer (The Netherlands; Sodor's Legend of the Lost Treasure onwards)
  • José Ángel Torres (Latin America; Sodor's Legend of the Lost Treasure onwards)
  • Ole Jacobsen (Germany; Sodor's Legend of the Lost Treasure onwards)


  • The Reverend W. Awdry only made a model of Donald for his model railway; there never was a Douglas model. The model is currently on display at the Narrow Gauge Museum in Tywyn.
  • According to the magazines, Donald and Douglas' drivers are related. Also, according to a magazine story, Donald and Douglas were built at The Scottish Engine Company.
  • Donald's original whistle sound is Duck's at a half step lower in pitch, while Douglas' original whistle sound is Duck's at three half steps lower in pitch.
  • Donald and Douglas' television series models are currently on display at Hara Model Railway Museum in Japan. As a result of the eye mechanisms not being replaced after the twelfth season, new eyes and pupils have been put in for display.
  • In the My Thomas Story Library series, the twins were painted blue following their being allowed to stay, just as they were in the Railway Series.
  • The twins' original numbers are an in-joke. The 812/652 Class numbers only went up to 57645.
  • In the Railway Series, Donald and Douglas are nicknamed "The Caledonian Twins". In the television series, they are nicknamed "The Scottish Twins". This is because they originated from the Caledonian Railway, in Scotland. 
  • Donald and Douglas' models did not have any watertanks on their tenders, this is also carried on to their CGI models. However, this was present on their large scale models.
  • Donald and Douglas went through several aesthetic changes in the television series:
    • Series 3:
      • Their nameplates were moved from their smokeboxes closer to the centre of their boilers.
      • Their brake pipes were moved from their left (viewer right) to their right side.
      • Douglas shared Donald's whistle sound.
    • Series 4:
      • Their nameplates were moved precisely to the centre of their boilers.
      • They either shared the same whistle sound as Duck or used Thomas' in a lower pitch.
    • Series 6:
      • Their brake pipes now face upwards.
      • Douglas' whistle sound is the same as Donald again.
    • Series 11:
      • Both of the twins shared the same whistle sound as Duck.
    • Series 12:
      • Their cheekbones disappeared.
    • Sodor's Legend of the Lost Treasure:
      • Their faces are different from their twelfth season appearance.
      • Their nameplates are smaller and have moved back to the sides of their smokeboxes, like in the second season. Their nameplates are now curved to their smokeboxes rather than a flat plate.
      • They have rivets on their bufferbeams and smokeboxes.
      • Their handrails are thicker.
      • Their cheekbones are restored, though somewhat less prominent compared to earlier appearances.
      • Both twins gained permanent lamps and taillamps.
      • Their funnels and cabs are more accurate to their basis.
      • They gained a stepladder in the middle of their running boards, like in the Railway Series.
      • They gained back deep-toned whistle sounds, similar to the ones their brothers had.
      • They are slightly smaller.
      • Their bufferbeams are lower to the track.
      • Their tenders slightly decreased in height so the lining matches the lining on their cabs.
  • In the Slovene dub of the series, Donald and Douglas aren't Scottish. In fact, they're stated to be from Jesenice, in the Gorenjska region of Slovenia. They even have a different accent.

See Also

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