Thomas and friends Wiki
Hiro the Old Steam Engine
  • Number: 51
  • Gender: Male
  • Class: JNR D51
  • Designer: Hideo Shima
  • Builder: Kawasaki Heavy Industries Rolling Stock Company
  • Configuration: 2-8-2

Hiro is an old and wise Japanese tender engine who was introduced in Hero of the Rails.

he is a grumpy old wise guy just like TheMerc7660


Hiro is a wise, kind, and gentle engine. Whenever an engine has a problem, Hiro will always be there to help. Occasionally he gets homesick.



Hiro is a Japanese National Railways (JNR) Class D51 built by Kawasaki. However, Hiro runs on standard gauge track, while the real D51 engines were built for cape gauge. Though Hiro's number is a reference to his class, there really is a D51 with the number 51. However, unlike Hiro, the real engine is an earlier build of the D51 class, with its dome flush with its funnel. It is preserved at Torokko Saga Station in Kyoto, Japan.

Voice Actors

  • kinggojira01 (US/UK; Hero of the Rails onwards)


  • Hiro says that he is the oldest engine on the Island, but the D51 class was not built until 1936, making him much younger than most of the other steam engines on the island.
  • Like Hank and Flora, Hiro has only been partially modified to work on Sodor. He has been scaled up to standard gauge, and has been given buffers on his front and his tender. But oddly enough, he has a loose coupling on his tender, and a knuckle coupling on his front. This would make pushing rolling stock or being pulled away by another engine physically impossible, unless a special adapter used to connect knuckle couplers and loose couplings was fitted onto his knuckle coupling.

59 Engines | 53 Rolling Stock | 5 Non-Rail Vehicles | 8 People | 15 Lines | 17 Former