Den is a Diesel who runs the Dieselworks...when Diesel 10 is not around. He is very thoughtful and thinks hard before he speaks. When Den does speak, it is very slowly. Den's assistant at the Dieselworks is Dart, and he often helps out by explaining just what Den is trying to say. Den may speak slowly, but he is very wise and but it is worth the wait to listen to him. Den is painted slate grey and orange. His buffers are painted with orange and black stripes. He has the Sodor Dieselworks logo on each side of his cab.
Den is part of the magical world of Thomas & Friends. The engines all work and play together on the Island of Sodor. While they are doing their very useful work, they learn important lessons about friendship and getting along. Many of the characters are available to purchase as part of different toy brands, including the timeless Thomas & Friends Wooden Railway Series. You can purchase Thomas and many of his engine friends, as well as wooden track, buildings, destinations and sets from the simple oval to the Deluxe Tidmouth Sheds set. Many engines are available on a limited basis and are retired, so check ebay or other online auction sites for your favorites if you can't find them here or in a store near you.