Boris is a railway coach, and he lives at Knapford's goods sheds.
Boris was Sodor's first male coach. He was found inside a run-down warehouse at Peel Godred, and was restored to full-working order.
Boris is kind and generous. Unlike most coaches, he appreciates life and doesn't seem to mind not being full of passengers or away from other coaches.
- Boris is Annie and Clarabel's triplet brother and the "middle child" of the three. Taking the first letter out of their names will make the first three letters of the alphabet, A B C.