The Fat Controller
Henrietta is Toby's faithful coach, based on the Wisbech and Upwell Tramway non-articulated GER four-wheeled coach. She worked with Toby on their old railway, and when that line closed Toby could not bear to leave her behind. The stationmaster had wanted to turn her into a henhouse, but The Fat Controller agreed that "that would never do." The two are inseparable, and whenever they are apart they worry about each other: