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"I have no spare whistles, so you'll have to wait! It serves you right for being such a crosspatch!"
— The Small Controller scolding Mike, Small Railway Engines

Mr. Fergus Duncan, nicknamed the Small Controller, is the controller of the Arlesdale Railway. He is taller than the Fat Controller and the Thin Controller; his nickname refers to the fact that his railway is often called the "Small Railway".


He was appointed by the Fat Controller, the Thin Controller, and the Owner to run the line so they could get the supplies of ballast that reside in the hills on the line.

He, the Thin Clergyman, and the Fat Clergyman later went on a search for Duke.

After Rex's steampipe began leaking one day and Frank had to take his train, the Small Controller began thinking that they needed another engine and so he arranged for Jock to be built.

The Small Controller is very passionate about his work, and never married. He preferred instead to devote his life to work on his railway.


Fergus Duncan's attire consists of a yellow vest over a white shirt with a brown tie and a brown jacket over it, and orange plaid trousers. He wears a yellow flower on his jacket.


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