Duck

Montague (affectionately known as "Duck" because of his supposed waddle) is a Great Western 57xx pannier tank engine. Previously being the station pilot at Tidmouth, he now has his own branch line that runs between Tidmouth and Arlesburgh and is commonly seen working with Oliver.

In the Railway Series, Duck has two Great Western autocoaches named Alice and Mirabel. In the television series, he has three Great Western Slip Coaches, collectively nicknamed "Slippies".