Mark Stephens
Mark Stephens
Vital statistics
Position Chief mechanical engineer
Age N/A
Arrived on Sodor Unknown
Status Alive
Physical attributes
Height Not stated
Weight Not stated

Mark Stephens is the chief mechanical engineer of the North West Railway.


The Fat Controller went to Mark when he wanted a new tank engine to run the Kirk Ronan Branch Line. Mark was given the task of designing (adapting an already existing design) and building him. In 1985, he was working with several other volunteers on Barry's restoration. 



Voice actors