Spencer the Silver Bullet Engine
Spencer is the sleekest and fastest engine ever to visit Sodor, and looks the part with his streamlined silver casing. He is the private engine of the wealthy Duke and Duchess of Boxford.
He is also one of the most arrogant engines to visit Sodor, which does not make him popular with the other engines -- especially Gordon. However, his pride has been his downfall more than once. First he had to be rescued by Gordon when he ran out of water, then on his next visit he lost a race with Edward. He does not seem to be humbled by his mistakes.
His distinctive shape is that of the LNER Class A4 express engine. Another of these, Mallard, holds the record for being the fastest steam locomotive in the world.
Spencer made his debut in the Season 7 episode "Gordon and Spencer", and made further appearances in Seasons 8, 10 and 11. And he played a very important role in Hero of the Rails.
