Stephen is one of the earliest engines ever built. Newer engines may be faster and stronger than Stephen, but what he lacks in terms of strength or speed, he makes up for with his positive spirit, sense of humour, and knowledge. He used to work at docks and in mines, but now works as a tour-guide at Ulfstead Castle. He has his own coaches and was trapped in the Ulfstead Mine where he discovered King Godred's long lost crown in time for the opening of the castle.
Stephen is based on the Stephenson's Rocket.
Stephen is painted yellow and black. He bears a nameplate reading "Rocket".
- The Lost Puff
- The Phantom Express
- Percy's Lucky Day
- Too Many Fire Engines
- The Afternoon Tea Express
- Santa's Little Engine
- Bob Golding (UK/USA)
- Thomas Wooden Railway (Normal, With Passenger Coach, and Rusty models, coming soon)
- Take N' Play
- Stephen's Theme is the King of the Railway Trailer Instrumental which He Shares with, Millie, Connor, Catlin and Sir Robert Norrmaby.
- Shamus (Theodore Tugboat)
- Koopa Kid (Super Mario Bros.)
- ROB (Star Fox)
- Banjo the Bear or the Omni-Viewer (Sonic the Hedgehog)
- Glenn the Turtle (Wreck-it Ralph)
- Ed (Tonic Trouble)
- Lumiere (House of Mouse)
- Phil (SpongeBob SquarePants)
- Lu Su (Dynasty Warriors)
- Fire Kraken (Skylanders)
- Main article: Stephen the Rocket Engine/Gallery