Ralph is a navy blue tender engine.
Ralph is a kind engine. He does not like being called a goods engine, as he feels he is being underestimated whenever he is referred to as such. He also often tries to give the other engines advice.
Ralph is based on a Caledonian Railway "McIntosh 812" 0-6-0.
Ralph is painted navy blue with light blue lining. He has his number on his tender in light blue.