Tune is one of the engines that created by Stuingtion. He is very good with identifying different kinds of liquids, minerals, and their chemical qualities. He uses a very unique fuel which is liquid based but can still be burnt and doesn't cause air pollution. The middle of his boiler and his tender's water tank are transparent for unknown reasons, which some find really cool. He also carries a steaming hot liquid sulfur cannon.
- Tune comes from the planet Neptune.