Mavis (Thomas & Friends)

Mavis is a black Diesel engine, who works in the quarry in Thomas the Tank Engine & Friends.

Biography
When she first came to Sodor, she used to be fiesty, arrogant, and very stubborn, and used to be full of her own ideas, and would shunt Toby's cars where ever she would like, much to Toby's dismay. He tried to reason with her, but she was still being stubborn, until she got in trouble by getting stuck at the Ffarqhaur crossing, and Toby thought she can take care of herself, until his driver told him she is supposed to stay in the quarry, so Toby decides it's best to help Mavis after all. After helping her, she is left very embarassed and angry. After being punished by her manager, Mavis is still stubborn and ignores advice, and plans to use the teeniest bit of Toby's line, she'll save herself from this bother, and plans to use the cars to bump her on Toby's line, but backfires when the cars bump Toby instead, and almost falls off a broken bridge into an abyss, and Mavis, now horrified, helps Toby to safety. Mavis confesses, but Sir Topham Hatt and her manager are proud of her, for being honest and for saving Toby, and now that she learned her lesson, her reward was to come down the by the branchline and help out. Now Mavis is a happy, honest, reliable, hard-working and friendly Diesel who shows respect for the steam engines, which she loves. She would occasionaly make mistakes, but knows how she can fix them, and is there when any engine needs her the most.

Trivia

 * Mavis is based off of  BR Class 04 0-6-0 fitted with additional cowcatchers and sideplates so that she can run near public roads.
 * Mavis has appeared in every season since her season 3 debut.