Stepney, named after a district in London, is a tank engine who lives and works on the Bluebell Railway. He is Boxhill's and Fenchurch's brother. His friendly, enthusiastic attitude makes him a welcome visitor on Sir Topham Hatt's railway. In the Railway Series, Stepney lives on the Mainland and works on the Bluebell Railway. In Thomas & Friends, Stepney works on a Sudrian branch line neighbouring the Skarloey Railway, also known as the "Bluebell Railway".