Lady

Lady is a small, Victorian-styled tank engine who serves as the guardian of The Magic Railroad, using her magic to keep the worlds of Shining Time and Sodor alive. She is owned and protected by Burnett Stone, her driver.Lady is a very special engine who holds the secret to the Magic Railroad. When she moves along the rails, she spreads Gold Dust with her special powers. She has been known to help Thomas and his friends, when there is no one else to turn to.

Fun Fact:
Lady is a freelance design, with no real known locomotive prototype. However, her design does bear some resemblance to the GWR 101 Class and the 3½ gauge LBSC Tich 0-4-0 side tank locomotive, as well as the Liverpool Overhead Railway's Kitson-built ex-West Lancashire Railway well tank "Lively Polly". One of Lady's concept art images depicts her as a 2-2-2, resembling Gazelle, a Dodman & Co 0-4-2 Well Tank locomotive from the Shropshire & Montgomeryshire Railway. David Eves originally intended Lady to be based on the GWR 3031 Class. However, Britt Allcroft wanted her to be a small engine. Coincidentally, the Hornby Emily was manufactured using a repainted GWR 3031 Class.

Lady's involvement in the Movie:
Lady once came to the Island of Sodor a long time ago, when she was found by Diesel 10, an evil diesel engine who wanted to destroy her. Lady and Burnett Stone both ran away from Diesel 10, but during the chase, Burnett used up all her coal and made her go too fast, causing Diesel 10 to catch up and crash her. Lady was taken back to Muffle Mountain and stored inside Burnett's workshop, where he spent years desperately trying to restore her to working order, but he did not have the right coal to make her steam.

Years later, Lady was still out of service and without her, the Magic Railroad began to lose its magical energy. That all changed when Lily, Burnett's granddaughter and Thomas brought a truck of coal from Sodor to Muffle Mountain, which proved to be the coal necessary to make her steam. Lady's face was revealed when she came back to life and she and Thomas returned to Sodor, where they were once again chased by Diesel 10, excluding Splatter and Dodge. Lady, Burnett and Thomas successfully managed to escape Diesel 10 and she gave the Conductor Family the Gold Dust they needed.