The Ghost Engine was referenced in a story Edward told the others one Halloween. Thomas later teased Percy, saying Percy thought it was real, but learnt his lesson after remaining behind at the Smelters to take a special load and thinking that some chains touching his cab were ghostly fingers. He then believed that a whistle in the shed was the ghost's lost whistle, forcing him to race out of the smelters, frightened.
The ghost engine is based on the Caledonian Railway "Mclntosh 812" 0-6-0s. Its model is one of Donald or Douglas' minus the tender and nameplates, it also wears the twins' surprised face mask.