Mighty Mac is a double-ended Fairlie locomotive. 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), 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.
Livery
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.
Basis
Mighty Mac is based on a Double Fairlie locomotive of the Ffestiniog Railway with added bufferbeams. A Double Fairlie locomotive from the Ffestiniog Railway appeared in the 1979 Annual.
