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'Arry and Bert

'Arry and Bert (also known as Iron 'Arry and Iron Bert) are two diesel shunters who work at the smelters and scrapyards of the Sodor Ironworks. They can also be found working at the Ffarquhar Quarry.


In their first appearance, Arry and Bert crept alongside a lonely Stepney, who had mysteriously been sent to the smelters by mistake. They shunted Stepney into the larger smelting shed underneath a giant grabber, and threatened to scrap him. Thankfully, Stepney was saved by the Fat Controller, once the diesels had left.

Despite being villainous, Arry and Bert are also known for playing tricks on steam engines, such as making them "middle engines". Once, they shunted trucks in front and behind Percy. This later led Percy to being pushed onto the coal tipper by mistake. Later, Arry and Bert played the same trick on James. Sometime later, they frightened Fergus away from the smelters, and bullied Neville, which made the engines think he was planning to bump them.

On some occasions, Arry and Bert's teasing ways backfire. Once, they played a ghostly prank on Thomas and Emily during Halloween, though they ran away when they thought Emily was a ghost. Another time, Arry and Bert teased Percy for having a whistle. Percy paid them back by creeping up behind them and blowing on his whistle. Later, along with Diesel, Arry and Bert began teasing Thomas for being smelly, but were later covered in stinky cheese.

Arry and Bert were also part of the group of diesels that took over the Sodor Steamworks. They later teased Henry because of the coal he had to use by calling him "Mr. Special Steam". They also laughed at Gordon after he ran into Diesel's flatbed and damaged his buffer beam.

In the twentieth season, Arry and Bert liked being rough and tough along with Diesel, they realized Diesel was trying to be nice to everyone. So Thomas took Arry and Bert to the ducklings while Diesel followed behind them. Diesel, Harry and Bert then realized the ducklings were cute.


Arry and Bert are unquestionably devious and scheming. They feel superior to steam engines and, working at the scrap yards, they enjoy the chance to break up engines, or at least make their lives more difficult. Due to their grim task, they have earned a reputation on Sodor as "The Grim Messengers of Doom".

Arry and Bert also have a tendency to act scheming, slimy, greasy, and oozy. According to their merchandise bios, they wish to scrap Oliver and Stepney, who have both escaped the cutter's torch once before.

However, despite their prejudices, the diesels have co-operated with steam engines on occasions, and when they are in trouble, steam engines often come to the rescue.

They play Axel and Foutch in Thomas (Rayman) (Julian Bernardino's Style)

They are two guardians of the first and third mask.


'Arry and Bert are based on BR Class 08 diesel-electric shunters. Over seventy members of this class survive today in preservation, while around 100 remain in service on the national rail network. They were in fact the most successful shunting engines in the world, with 996 of them built. Dieselthe Diesel ShunterSplatter, DodgePaxtonSidney, Ulli and the Mainland Diesels are also members of this class.


Arry and Bert are painted green-grey with yellow hazard stripes on their fronts with yellow cabs. They have "Sodor Ironworks" written on their sides in white.


Television Series

  • Season 5 - Stepney Gets Lost (Harry (not named); Bert (does not speak))
  • Season 6 - Twin Trouble (Harry or Bert (cameo)) and Middle Engine
  • Season 7 - Bill, Ben and Fergus (cameo), James and the Queen of Sodor (cameo), and Fergus Breaks the Rules
  • Season 8 - Percy's New Whistle, Thomas to the Rescue (do not speak), Percy's Big Mistake (cameo), Halloween, and Percy and the Magic Carpet (cameo)
  • Season 9 - Thomas and the New Engine
  • Season 11 - Dirty Work (cameo), Hide and Peep (cameo), and Thomas and the Stinky Cheese
  • Season 12 - Don't Go Back (do not speak) and Gordon Takes a Shortcut (cameo)
  • Season 14 - Victor Says Yes and Thomas in Charge (cameo)
  • Season 15 - Edward the Hero (cameo) and Henry's Happy Coal
  • Season 16 - Old Wheezy Wobbles and Bust My Buffers!
  • Season 18 - Signals Crossed (cameo) and Thomas the Quarry Engine (cameo)
  • Season 19 - Salty All at Sea (Harry only (cameo))
  • Season 20 - Diesel and the Ducklings


Learning Segments:

  • Season 8 - Steamies and Diesels Sounds (cameo)
  • Calling All Engines! - Diesel Engines and Steam Engines are Different and Which Diesel Engine with Which Steam Engine?

Magazine Stories

  • 2004 - Steam Power (Harry only)
  • 2005 - Thomas' Halloween (Bert (does not speak))
  • 2006 - Percy's New Whistle, Thomas and the New Engine (cameo) and Bridge Bother (do not speak)
  • 2008 - Flower Engine (do not speak)
  • 2011 - Victor Says Yes (do not speak), Flower Engine (do not speak), and Creepy Claw
  • 2012 - Henry's Happy Coal, Old Wheezy Wobbles (Harry only (cameo)), and Fish and Ships (Harry only (does not speak))
  • 2014 - Wobbly Old Wheezy (Harry only (cameo))
  • 2015 - Bust My Buffers!
  • 2017 - Diesel and the Ducklings (Harry (speaks in speech bubble only); Bert (does not speak))

Voice Actors


  • Kerry Shale (UK/US (fourteenth season onwards))
  • Moriya Endo (Japan (fifth season only))
  • Yūki Satō (Japan (sixth - eighth seasons))
  • Shinichi Namiki (Japan (Calling All Engines! onwards))
  • Jürgen Holdorf (Germany (fifteenth season onwards))
  • Holger Potzern (Germany (Audio Book (Calling All Engines! only)))
  • Ben Hecker (Germany (Audio Book 11 only))
  • Christoffer Staib (Norway (fourteenth - sixteenth seasons))
  • Jan Kulczycki (Poland (fifteenth season onwards))
  • Víctor Delgado (Latin America (Day of the Diesels - sixteenth season))
  • Óscar Gómez (Latin America (twentieth season onwards))
  • Fernando Castro (Spain (fourteenth season onwards))
  • Michel Lasorne (France and French speaking Canada (eighth - eleventh seasons))
  • Jukka Voutilaninen (Finland (fourteenth season only))
  • Pasi Ruohonen (Finland (fifteenth season onwards))


  • Kerry Shale (UK/US (fourteenth and fifteenth seasons))
  • William Hope (UK/US (sixteenth season onwards))
  • Keiji Hirai (Japan (sixth - eighth seasons))
  • Shinichi Namiki (Japan (Calling All Engines! onwards))
  • Rainer Schmitt (Germany (fifteenth season onwards))
  • Lutz Harder (Germany (Audio Book (Calling All Engines! only))
  • Klaus Dittmann (Germany (Audio Book 11 only))
  • Sigbjørn Solheim (Norway (fourteenth - sixteenth seasons))
  • Mieczysław Morański (Poland (fourteenth season only))
  • Piotr Bąk (Poland (fifteenth season onwards))
  • Jorge Roig (Latin America (Day of the Diesels onwards - sixteenth season))
  • César Soto (Latin America (twentieth season onwards))
  • Michel Lasorne (France and French speaking Canada (eighth - eleventh seasons))
  • Pasi Ruohonen (Finland (fourteenth season onwards))


  • The two are not quite identical: Bert has more stubble.
  • Bert is the first character in the franchise to share his name with another character, and the second to do so in the television series.
  • In merchandising and the official website, the twins are named "Iron Arry" and "Iron Bert".
  • Arry and Bert's television series models do not have handrails, although some of their merchandise lines do.
  • The 1998 Official Website and Question Time with Sir Topham Hatt called Arry and Bert "The Yellow Diesels".
  • Harry and Bert's fifth season models were repainted and constructed into Splatter and Dodge for Thomas and the Magic Railroad.
  • A model of Arry and one of Bert used to be on display in Canada at Nitrogen Studios.
  • Arry's name was not revealed until merchandising of him was released.
  • Because of his grim job of melting down engines, Harry is sometimes referred to as the "Grim Messenger of Doom" by the other engines.
  • Arry and Bert have gone through a few changes in the television series:
    • Season 6:
      • Their side rods change from silver to black.
      • Their faces became smaller.
      • The text, "Sodor Ironworks", on their sides became bigger.
      • Their models were significantly less weathered than the previous season.
    • Season 12:
      • Their faces become smaller still.
    • Season 14:
      • Their faces returned to the size they were in Season 5.
      • They gained new horn sounds.
    • Season 18:
      • They each gained a tail-lamp.
  • On Arry's trading card, he is depicted with more stubble than Bert, opposite of how they usually are.
  • There were a few occasions where they went faster than their basis' top speed.
  • Harry is the only character whose Mini does not have a classic variant, despite have a DC comics variant.


Stepney was all alone, but not for long. Two diesels approached.
"Got ya this time, Stepney. You'll make very fine scrap indeed, buffer him, Bert!"
The diesels took him to the large smelting shed.
"Bye-bye, Stepney!" said the Diesel. (laughs in US version)

- Arry and Bert's introduction, "Stepney Gets Lost", fifth season

The next day, James arrived at the smelters. He was determined not to be tricked by Arry and Bert.
"Hallo, James!" oozed Arry. "Come to learn a thing or two from those who know?!"
"Just get my trucks ready, and stay out of my way!" huffed James importantly.
"Yes, Sir." Bert chimed greasily.

- James meets Harry and Bert, "Middle Engine", sixth season

Fergus and his driver arrived at the smelters.
"I want to go back to the Cement Works! None of the other engines like coming here, its so scary!"
"You're right!" said his driver.
Just then, the scrap diesels emerged.
"Hello! Are you happy to be here?"
"No!" cried Fergus.

- Fergus gets scared by Arry and Bert, "Fergus Breaks the Rules", seventh season


  • ERTL (discontinued)
  • Wooden Railway (normal, oil-covered (discontinued (cheese-covered Bert (discontinued))))
  • Take Along (normal and metallic (discontinued))
  • Take-n-Play
  • TrackMaster
  • Bachmann
  • Hornby (discontinued)
  • Lionel (discontinued, later reintroduced with LionChief remote)
  • My First Thomas (discontinued)
  • My Thomas Story Library (discontinued)
  • Trading Cards (discontinued)
  • De Agostini (discontinued)
  • Minis
    • Classic Minis (Bert only)
    • Neon Minis (Bert only)
    • DC Super Friends Minis (Harry as Shazam)
    • Electrified Minis (Bert only)
    • Space Minis (Bert only)
    • Aquatic Minis (Bert as a jelly fish (with Harry's face mask))

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