Stanley

Stanley is a tank engine who first appeared in the movie "The Great Discovery". Stanley was brought to the North Western Railway. Thomas was afraid that he would steal his spotlight, so he tried to make Stanley look silly by playing a trick on him. The plan went wrong, however, and when Thomas went missing the Fat Controller launched a search party all over Sodor. Thomas was found by Stanley, and the two became great friends.

Stanley is described as being "like Thomas, only larger", but he is actually shorter than Thomas. Stanley has an unusual livery, being painted silver all over, including his boiler, buffers and funnel, and having red wheels. His shape resembles Billy's, except for the fact his coal bunker is located in front of his cab rather than behind, in Billy's case.

It is guessed that Stanley is based on an LMS Kitson 0-6-0 locomotive, similar to that of Pug.