":I'm not a ghost! I'm the Old Warrior at your service."
- Sir Handel and the Ghost Engine, second season
Bertram, nicknamed the Old Warrior for his bravery, is an old narrow-gauge engine who worked in a quarry on the fair side of Sodor.
Bertram used to work in a series of mines with other little engines. his fate was unknown to many after the mine's closure, and it was assumed he was left to rust. However, Toby found him whilst watching over the quarry one night, and has since befriended him. He now works at the restored mines, taking passengers to the fairground within.