Marion is a bubbly and funny railway steam shovel, who loves her job. She doesn't just love digging, she also loves talking — talking about digging. She likes to think of herself as well-informed and is happy to share her knowledge of anything and everything, from correct railway practice to natural history. She works at the China Clay Pits with Bill and Ben and Timothy. With her own steam driven engine, she can can even pull her own trucks, but she prefers not to.
Marion has dug up almost everything from dinosaur bones to Roman villas, old engine wheels and secret caves.