Montague (affectionately known as "Duck" because of his supposed waddle) is a Great Western Pannier tank engine.
Duck is the No. 8 Great Western tank engine. He is very proud of his Great Western heritage and always does jobs the "Great Western" way. He also runs a branch line with Oliver nicknamed "The Little Western".
- HO Scale
- Duck's model only has one whistle valve when in the TV Series, he has two.
- The prototype Duck had a black footplate similar to the CGI model of him, but was changed to grey on the production model.
- Duck's buffer housing is black instead of red.