Stanley

Stanley is a strong tank engine with a white coat, silver smokebox, red stripes and red wheels. He was brought to The Fat Controller's railway to help with the preparations for an annual Sodor Day celebration. Other engines took to him because of his willingness to help out, or to find an engine who could.

Thomas became jealous of Stanley's popularity and planned to make him look foolish, shunting a heavy train that Stanley couldn't pull uphill from Great Waterton. When the train broke away and rolled into the construction site, the other engines became angry with Thomas. Stanley, however, glimpsed Thomas upset with his abandonment. When Thomas went missing, Stanley was eager to help him, and after being rescued, Thomas apologized for their feud.

Stanley is introduced in the film The Great Discovery, and has roles in Seasons 12 and 15 as well as cameos in Misty Island Rescue and Season 14.

Stanley is based on a generic 0-6-0T industrial tank locomotive design, and includes components distinctive to several manufacturers.