Murdoch is a mighty engine with ten drive wheels. He is Sodor's largest and strongest engine (bigger than Gordon) with 10 driving wheels. He was brought to the Island to help with the heavy workload and pull freight on the main line. As shy as he is strong, Murdoch can often be found seeking peace and quiet. He is great friends with Salty and Harvey. Murdoch is featured in "New Friends for Thomas" video.