Eustace is an old American steam engine who works at the Mt. Chwarel Logging Mill, along with John Henry. He often pulls heavy trains of logs all the way down to port to be shipped. He was a wise, old engine, always giving advice to engines who had accidents. He usually stays at the mill, but sometimes goes to other places after the mill work was done. He has a loud, low whistle, that can go into a high and low pitch, whenever he whistles, it would always scare the birds away.