Mavis is a diesel shunter who works at Ffarquhar Quarry.
Mavis worked at the Ffarquhar Quarry Company to shunt trucks in their proper sidings for Toby to take to the harbour. After coming to a standstill in a frozen mud bank and rescuing Toby from a precarious tight-rope walk, Mavis was allowed to venture further down the line.
Mavis was arrogant until being brought down to earth after her embarrassing incident at the Ffarquhar crossing. Despite this, Mavis is a reliable, honest, hard-working engine, and unusually for a diesel, shows respect for the steam engines. However, unlike most engines, hauling trucks makes her feel important.
Mavis has now matured and acts as a motherly figure to the other engines.
Mavis is painted black with yellow hazard stripes on her front and rear. She has her name and "The Ffarquhar Quarry Co. Ltd." written in white on her cab and sideplates respectively.
- Season 1 - Percy's Oil Spill and Scruff the Scrapper (cameo)
- Season 2 - Disappearing Diesel, Fire at Ffarquhar (cameo), Sodor Day (cameo), and Truck Trouble
- Mavis was the last character Wilbert Awdry created before he retired from writing the Railway Series.
|North Western Railway|
|Thomas • Edward • Henry • Gordon • James • Percy • Toby • Duck • Donald and Douglas • Oliver • Bill and Ben • Daisy • BoCo • Bear • Neil • Harvey • Emily • Fergus • Arthur • Murdoch • Molly • Neville • Rosie • Whiff • Stanley • Hank • Flora • Victor • Charlie • Bash and Dash • Ferdinand • Scruff • Belle • Porter • Timothy • Marion • Logan • Glynn • Ryan • Geoffrey • Diesel • Mavis • Derek • Diesel 10 • 'Arry and Bert • Salty • Dennis • Den • Dart • Sidney • Paxton • Norman • Philip • Flynn • Winston • Stafford • Dustin|