- This is Number 12 Of North Western Railway
Emily is a Green Stirling Single Engine.
- Season 1: Stepney's Problem, Thomas' 4th of July, Murdoch and the Express (does not speak)
- Season 2: Daisy and the Visitor, James’ Tender Trouble (cameo), Old Slow Coach, The Flying Scotsman returns, The Flying Scotsman departs
- Season 3: George the steamroller, Diesel’s Dilemma
- Season 4: Thomas and the Ghost
- Season 5: A Cranky day at the Docks, Stepney‘s Perfect Day, Daisy’s Big Disaster
- Season 6: Gordon’s Flying Kipper (cameo), An Old Friend Returns, An Opportunity of a Lifetime
- Season 7: Hank’s Bubble party, Wilbert’s tragic day
- Season 8: Bulstrode and the Fisherman (cameo), Tricky Trucks (cameo)
- Season 14: Double-Decke-Wreacker (cameo), Hatt Trick (cameo)
- Season 15: Roundhouse Roulette (cameo), Nightmare on Sodor (fantasy,cameo).
- She is likely to have a speaking role in Season 16.
emily is the second female steam engine and first tender engine in the series and the fourth female engine overall, the first being Daisy, the second being Mavis, and the third being lady.
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