Thomas the Tank Engine Wikia

Mighty Mac

7,287pages on
this wiki
Add New Page
Comments0 Share
This article is about the character. You may be looking for the episode or the Story Library book.
"I'm Mighty!"
"And I'm Mac!"
"And together we're Mighty Mac!
— Mighty Mac's introduction, Mighty Mac, ninth season



Mighty Mac
  • Class: FR Double Fairlie
  • Designer: G.P. Spooner
  • Builder: FR Boston Lodge Works
  • Built: sometime after 1879
  • Gauge: 2ft 3in
  • Configuration: 0-4-4-0T
  • Top Speed: 50 mph

Mighty Mac is a double-ended Fairlie duplex locomotive. The pair are conjoined paternal twins, Mighty is the "older" of the two and is distinguished by a small flick of hair. Mac is the "younger" half and is distinguished by his youthful features, round nose and freckled cheeks.

Despite the opposing personalities of the two ends, they are technically one engine.


Prior to their adoption into the Skarloey Railway family, Mighty Mac had only worked in the shunting yards. Their lack of knowledge beyond their boundaries created much conflict between the two halves (for example, which end is in charge of doing what) when they pulled their first train, which placed themselves and their passengers in great danger whilst running an important errand. But, with advice from Thomas in mind, they were able to complete their task and realise the value of working as one.


Mighty Mac is based on a Double Fairlie locomotive of the Ffestiniog Railway with added bufferbeams. A Double Fairlie locomotive from the same railway appeared in the 1979 Annual. Three of these are currently in service on the Ffestiniog, another is preserved at the National Railway Museum and another is under construction at Boston Lodge.


Mighty Mac is painted royal blue with yellow and red lining. On Mighty's side, his cab windows and tank caps are lined with yellow, while on Mac's side, they're lined with red.


Voice Actors


  • Unlike most Double Fairlies, Mighty Mac has a whistle at both ends of their model.
  • Mighty is the only engine to have what appears to be hair (besides Etienne's mustache) though 'Arry and Bert both have 5 o'clock shadows in the form of facial hair.
  • In Season 11, their whistles were changed to Harvey's at a higher pitch.
  • Mighty's original whistle sound was later used for Bert, albeit at a half-step higher in pitch.
  • Mac's original whistle sound was later used for Rex.



Merchandise Gallery

Skarloey Railway
SkarloeyRheneasSir HandelPeter SamRustyDuncanIvo HughDukeFredMark V
BertramMighty MacFreddieLukeProteus

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.