Duncan

Duncan is a grumpy Scottish narrow gauge engine who came to the Skarloey Railway as a spare engine after Peter Sam's accident with some slate cars.

Personality
Duncan is a Scottish narrow gauge engine with rough manners and a strong temper, making him the least social of the Skarloey Railway fleet. While he means well (at least some of the time), he often grumbles and complains, usually about not being polished or being over-worked and can be rude, rough, stubborn, and bad-tempered. He claims to be a plain engine who believes in plainly speaking, an approach that can cause him to make callous or belligerent remarks. Duncan can be a competitive engine too, particularly with James. He can be impulsive, even more so than Sir Handel, and make rash decisions which usually lead to his own downfall, (such as getting in arguments or short-lived feuds with Rusty). He is not always quick to apologise or realise the error of his ways.

In spite of his rough ways, Duncan can be a little misunderstood as he is focused, confident, resourceful, and has a big heart. He is always willing to lend a helping hand whenever he can and wants to be really useful.

Trivia

 * Duncan appears the most in the SC Shorts then any other narrow gauge engine.
 * Despite it appearing during its usage, Duncan's ERTL model never appeared during the time span of the second SC Shorts intro as his ERTL model was replaced with a Take-N-Play model before it could ever be used in any of the episodes with the second intro.
 * Duncan underwent a few changes in the SC Shorts. These include:
 * In "Honey, a Diesel Shrunk The Engines", Duncan was given a paper head lamp and tail lamp, gold boiler lining, extra black lining on either side of his cab entrances, yellow cylinders, silver siderods, silver wheel outlining, and a red footplate and running board mimicking his CGI counterpart.
 * In "This Has Nothing to do With Halloween", he gained rivets on both his front and rear buffer beams.
 * In "Merry Misty Mainland Part 2", his ERTL model was replaced a Take-N-Play Duncan model.
 * Duncan has tried several times to murder Rusty, but he keeps on failing to do so in the end.