Forney arrived from the 3rd diemeison (probably North America). It had always been his dream to join the GVNGRR. When he arrived, he hid out of shame believing that he caused a locomotive to fall into the sea. With Michael's help, Forney learned the truth and was able to stop hiding.
Forney is based on a vulcan iron works 2ft 2-4-4t forney. His design was used on interuban railways, logging short lines, and 2ft Narrow Gauge railroads. They were used for freight, passenger, and switching and most models were used for the New York Elevated railway until being replaced by electric subway cars.