A porter is a railway employee that helps passengers aboard a passenger train or to handle their baggage. They often have to cross the railway line.
The porters at the Island of Sodor tend to be very clumsy and accident prone. They are linked to several incidents that happened around the Island, such as the time Percy tried to surprise the coaches and spilled sticky jam all over the passengers and Sir Topham Hatt, and the time two porters broke a beehive at the station.
A porter's uniform consists of blue trousers, a black tie, a white shirt with a blue jacket over it, and a blue cap.