The Mainland Engines are Engines who work on The Other Railway.
These Engines Work on The Other Railway. Even Though They Have Not Appeared Visually in Thomas the Tank Engine Wooden Railway Adventures They Can Be Presumed To Be friends of Diesel 10, Bowler, Spamcan, Splatter, Dodge, and Dart, and Sidney.
They Were Mentioned in The Special Hiro's Origins.
- Big City Engine
- Stepney (formerly)
- Flying Scotsman
- Connor and Caitlin
- Logan (formerly)
- Spamcan and Bowler
- Diesel 10
- Splatter and Dodge
- The Mainland Diesels
- Hiro's Origins (mentioned)
- Oliver's Eleven (Connor, Caitlin, Hiro, Samson (cameo), Big City Engine (cameo) only)
- Saving Pirate Ryan (Merlin Only)