Sixteen was a troublesome industrial saddletank engine who once worked at a steelworks.
Sixteen lived at a steelworks, with several other engines. He spent all day shunting trucks to a place called the "tip". Engines were not allowed to travel along the track on the tip itself, as it was not firm enough to take their weight. Sixteen thought he knew better, and often tried to pass the "DANGER" board without success.
One day, however, Sixteen took advantage of damp conditions, and told the trucks to slide him past the warning notice. His fireman was told to reverse him, but before he could do so, the rails gave way and Sixteen tipped over onto the ground. He was eventually rescued but not repaired, and sent to the sheds in disgrace where he remained in storage.
According to Wilbert, Sixteen "got better than he deserved" and was bought by a preservation society in the Midlands, and now works on their railway. Wilbert later told Sixteen's story to Thomas and Toby, while he was visiting Sodor.
Sixteen was naughty, careless, arrogant, and awkward. He refused to take anyone's advice, and it is also implied that he grew bored of his surroundings and was curious about the outside. After his accident, Wilbert has said that he hopes Sixteen has learned his lesson after being restored.
Sixteen is based on a Hunslet Austerity WD 0-6-0ST. Wilbert is another member of this class.
Sixteen is painted mahogany with yellow lining, the number 16 he is named after on his saddletank, and black and yellow hazard stripes on his bufferbeams.
- Sixteen may appear in the episode, Wilbert's Account