Class 121
The Class 121 is a single-car diesel multiple unit used on the railway network of Ostarland. In real life, it had been used on the British railway network until their withdrawal in 2017.
On the Ostarland railway network, it is used on the Spean Valley branch line and the North Silversea Railway, both operated by Ostarlanian Railways. In the North Silversea Railway the train is in a two-car formation.