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Theo is an experimental railway traction engine who works at the Steelworks on the Mainland.

Technical Details[]

  • Power Type: Steam
  • Fuel Type: Coal
  • Configuration: 2-2-0
  • Wheels: 4
  • Designer: Aveling & Porter
  • Year Built: 1871 or 1872
  • Railway: The Other Railway

Personality[]

Theo is very shy, extremely cautious and has an unusual experimental driving system which does not function properly.

Basis[]

Theo is based off the Brill Tramway's Aveling & Porter engines. He has had several modifications including a cab, a set of gears on his right side similar to the Coalbrookdale locomotive and the removal of his footplate.

Voice Actors[]

  • Darren Boyd (UK/US: Thomas & Friends - Journey Beyond Sodor onwards)

Trivia[]

  • Theo is said to have personality traits of autism making him the first character in the series with a neurological disability.
  • Theo speaks with a mild lisp, making him the first character in the series to have a speech impediment.
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