George and Robert Stephenson
Robert Stephenson and Company
Stephen was brought to Sodor to be restored by Sir Robert Norramby. He was eager to get to work, but that lead him to be trapped in a mine. He was ultimately rescued by Thomas, and also found King Godred's lost crown in the mine. He now enjoys taking passengers around Ulfstead Castle.
Stephen is a jolly old engine with a positive attitude and a good sense of humor. He is a good-hearted and quick-witted engine, and will not take any nonsense from engines like Spencer or Diesel. Some of the smaller engines look up to him for advice, and he is always willing to get the job done.
Stephen is painted yellow and black. He bears a gold nameplate reading "Rocket". His funnel is painted white with a gold finial and his domes, whistle, exhaust pipes, and boiler bands are copper.
Stephen is an antagonist. He inhabits Ulfstead Castle at Night. He will attack players by biting them.
He is a yellow humanoid with sharp claws and teeth, black eyes with red pupils, and his funnel on his head. His bottom half is missing, exposing part of his spine and forcing him to crawl.
- Season 1 - Streamlined Engines, Mind my Paintwork!, and The Christmas Tree (does not speak)
- Season 2 - Forest Fire (cameo) and Paul and Rusty
- Season 3 - Connor the Mr. Clean and Cold Chaos
- Season 4 - The Missing Tool, Duke's New Grace, Famous Engines, Cows and Whistles, and James and Flynn
- Season 5 - The Big City Engine, Silver Steam and Creepy Cutting
- Thomas and Percy (mentioned)
- Gordon and Spencer: An LNER Rivalry
- Thomas and the Ghost Engine
The Many Adventures on the Island of Sodor
- Season 1 - A Bad Day for James (mentioned), Duncan in Love, Old Engine, New Changes, and Duke Does it Again (cameo)
- Season 2 - Second Rate Engines, The Search for Neil, Harold in Space (cameo), and Paint the Town Red (cameo)
- Thomas' Wonderful Life (cameo)
The Adventures on Sodor
- Season 1 - Henry the Warrior, Spencer the Show-Off, Gordon, Spencer and the Flying Scotsman, and Tinsel on the Tracks
- Season 2 - Trouble on the Line, Jealous James (mentioned), and Duncan's Discovery
- Railway Show Engines - Red and Fast (mentioned)
- Season 1 - Luke and Millie's Day Off and Millie's Halloween
- Season 2 - New Year, New Millie, Millie's Mistake, Famous Little Engine, Luke's Special Valentine (cameo), Millie's Whistle (does not speak)
- Specials - Attack of the Philips and A Millie Christmas