Duck is a GWR Tank engine! And is the No.8 of the North Western Railway
Duck knows how to hold his own and tends to stand for no nonsense from any engines that might get ideas above their station and try to order him or others about; as a result of this and his strength, most tank engines look up to him. However, he and Thomas have not always got on well due to the latter’s cheeky antics but the two later shared a mutual respect since the two ended up working together to help Harold and have always had a great friendship with each other.
However, his moral code is not perfect and often favours fairness to kindness, like when he asserted to Percy that Thomas deserved his comeuppance for teasing him about being scared. He enjoys running like clockwork, without problems or interruptions, making him a very efficient and loyal engine. He takes tremendous pride in the responsibilities bestowed upon him, particularly in his role of running his own branch line with Oliver, sometimes known as the "Little Western" as a result.
Duck is based off the GWR 5700 Class Pannier Tank Engines. Originally Designed by Charles Collett, a staggering 863 5700's were built between 1929 and 1950. The majority of 5700's were built at the GWR's own Swindon Works, though the first 50 locomotives (5700-5749) were built by the North British Locomotive Co., in Glasgow Scotland and would go on to produce 50 additional members of the class, with additional locomotives being built by Armstrong Whitworth, W.G. Bagnall, Beyer, Peacock, and Co., Kerr Stuart, and the Yorkshire Engine Co. The 5700's (And their various sub-classes) were used for various duties including shunting, pilot work, and medium-sized goods trains across the GWR's System, and on several branch lines. Following the introduction of the Modernization Plan in 1955, and the closure of several branch lines (and the introductions of Diesel Shunters), the Panniers began to be withdrawn. Interestingly, 19 of the Panniers were sold to London Transport following withdrawal by BR for Engineering and Ballast Trains. All off the 5700 Class Panniers were withdrawn by 1966, but 3 of the London Transport Panniers would last until 1971. Happily, 16 Panniers survived into Preservation, including 10 from the London Underground and an additional 6 from the scrapyard.
Duck, for the most part, is fairly similar to his basis, though he lacks the Belpaire firebox that his basis has. Another Interesting Note is in the Railway Series (RWS), Duck's number (5741) points to him being one of the original 50 Panniers built by the North British Locomotive Co., though "Sodor: Reading Between the Lines" notes that his number may not be the one he was originally allocated with. Sadly, the real 5741 wasn't among the Panniers preserved, as it was sadly scrapped at Swindon in 1958. Coyote is another member of this Class!