- MavisGo to Mavis
Mavis is a diesel engine who works at the Ffarquhar Quarry Co.
Season 1: - Swagger and Swerves (cameo), Bon Voyage (cameo), Bulldozer, Scruff's Scaffolding, Conspiracy Theory (stock footage, does not speak).
Season 2: - Mavis and the Tornado, Munitions (cameo), Blunderbuss (cameo),
Mavis is painted black with yellow linings with The Ffarquhar Quarry Co. Ltd. written in both sides in white.
Mavis is based on a BR Class 04 0-6-0 with additional cowcatchers and sideplates so that she can run near public roads.