|This article is about 'the Talyllyn Railway diesel engine'. You may be looking for 'the cleaner, the former snack bar manager, the excavator or the Story Library book'.|
Alf is a narrow gauge diesel, built in 1950, working on the Talyllyn Railway. He uses parts of another engine stored at Brynglas.
Fred is presumed to be based on Alf.
Alf is painted in a dark evergreen colour.