Thomas is a little blue tank engine who lives and works on the Island of Sodor, He went from being a young cheeky tank engine to a mature kind, supportive Really Useful Engine. 

A friend to all engines and a popular member of the Fat Controller's railway, Thomas is No.1 and does his best every day to live up to that through helping his friends and those that he cares about. He lives to be a Really Useful Engine and encourages everyone else to do the same. 