Bill and Ben are two yellow tank engines, who are characters in Thomas the Tank Engine Tales. They are twins, and they work at the China Clay Works near Brendam Bay. They work with a large, green diesel engine named BoCo.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.