Audrey is an express tender engine who works by the sea.
Audrey isn't just a super fast engine that pulls The Seaside Express; she's also a very artistic, calm, empathetic character that speaks in a flat, monotone. She often gets caught up in her own thoughts in her own thoughts and imagination, but she cares deeply for her friends and would do anything for them. She prides herself on her work, but even more so on the poetry she writes about everything around her.
Audrey is based on a Great Northern Railway (Ireland) V class steam locomotive built in 1932 by Beyer, Peacock and Company. These engines were designed to be stronger after the engines that previously ran the Dublin – Belfast expresses, the most important passenger service of the GNR, were given trouble due to boiler pressures.