Mavis (T&F)

Mavis is a diesel engine who works at the Ffarquhar Quarry and previously the Sodor Slate Quarry. Her main job is to shunt trucks around the quarries, but she also takes occasional goods trains to Brendam Docks.

Biography
When she was introduced, just like in the Railway Series, Mavis continuously put the trucks at Ffarquhar Quarry in different places, much to Toby's frustration. Toby finally left Mavis to put the trucks wherever she wanted. Mavis was supported to do so by Diesel and took the trucks to a level crossing, where the trucks held her back and she got stuck on the crossing, trapping Bertie and Terence. Mavis was rescued by Toby and sent back to the quarry. She felt embarrassed after the accident and upset when she was not allowed to leave the quarry. Percy tried to knock some sense into her, but she refused to listen. She eventually made a plan with the trucks to go as far up the line as possible, but this resulted in putting Toby in danger. Mavis rescued Toby and the Fat Controller let her go further down the line occasionally.

In the fourth series, Mavis was one of the engines who took over the jobs of the engines who went to England. In the fifth series, she had clearly matured and she and Toby received help at the quarry from Stepney, who was visiting the railway.

In the sixth series, she was able to keep Bill and Ben in order after BoCo became her new mentor at the quarry (according to the Thomas and Friends Writers' Bible). When Salty came to work at the quarry, he was upset that he was not working by the sea, so Mavis did her best to comfort him while trying to stop Bill and Ben from complaining about Salty's talent with working with trucks. Mavis tried to stop Bill from being so jealous and grumpy when Ben went to get new buffers.

In the seventh series, Fergus was sent to help Mavis and the twins. Mavis got on well with Fergus and helped him out of a rockslide caused by Bill and Ben. In the eighth series, Mavis was one of the diesels given bad fuel. This resulted in her and the other diesels breaking down, so Thomas collected new fuel and helped them.

When the steam engines and diesel engines were arguing, Thomas turned to Mavis for help since she is one of the few nice diesels and the two organised a meeting to sort things out. She also helped with the construction of the Sodor Airport, including taking away rubble from the wrecked tower.

In the ninth series, Mavis was involved in a collision with Percy and Toby that was caused by Emily. In the tenth series, Toby went to Mavis for help with his jobs, but she was too busy. In the eleventh series, Mavis was left without fuel when Billy did not deliver it. In the twelfth series, Mavis was having a wash at the Sodor Slate Quarry when she was derailed by Thomas, who was racing with Diesel backwards.

When Spencer got on the verge of discovering Hiro, Mavis distracted him from Thomas and Percy by guiding him to back upright underneath the operating slate hopper. This led to Spencer being taken for repairs at the Steamworks.

In the thirteenth series, Mavis was awoken early by Thomas, comforted Percy who was upset about having no job, was given flowers as a surprise from Emily (who assumed she was upset) and attended Hiro's welcome party. She was later convinced by Thomas to shunt trucks at Brendam Docks to impress a Railway Inspector alongside Percy.

Mavis broke down one day and was taken to the Dieselworks by Salty, where she was surprised to see Percy there. In the fifteenth series, she told Spencer - who could not see properly due to heavy fog - that he was at the quarry when he thought he found the Duke and Duchess of Boxford's Summer House. She later broke down again and was helped by Diesel. In the sixteenth series, she told Gordon to get his bufferbeam mended, even when he tried to convince her he was fine without it and helped a composer with his song alongside Thomas and some of the Steam Team.

In the eighteenth series, Diesel took her to see the sights of Sodor, while Thomas did her job at Ffarquhar Quarry.

In the nineteenth series, she got damaged by stones from the hopper and had to go to the Dieselworks to be repaired and Den was sent to the quarry to replace her. She comforted Dart when he started to miss Den and once she was fixed, she went back to the quarry.

In the twenty-first series, Mavis is one of the engines who spread Den and Dart's rumours about Daisy being prepared to be scrapped when the duo could not acquire a spare spring to repair Daisy.

Personality
When Mavis first came to Sodor, she was naïve, arrogant and did not take advice very well. She was mostly interested in her own ideas but was brought down to earth after her embarrassing incident at the Ffarquhar crossing. Still, she wanted to see more of the line and schemed to have the trucks push her past the level crossing beyond the quarry - this inadvertently resulted in a near accident for Toby. After rescuing him, Mavis resolved to change her ways for good. She is now more mature and capable of keeping the trucks in line and more willing to take advice.

Unlike many Diesels, Mavis shows respect for the steam engines and unlike most engines, hauling trucks makes her feel important. She is a reliable, honest, and hard-working engine. Over the course of time, Mavis has matured and acts as a motherly figure to the other engines. As a result, she keeps a stern attitude with the troublesome trucks and holds zero patience towards troublesome antics like those from Diesel. Although Mavis means well, she can at times feel cooped up in the quarry, but always cheers up at the chance to stretch her wheels.

Basis
Mavis is a based on a British Rail (BR) Class 04 0-6-0 diesel locomotive. She is more specifically based on the BR Class 04's that worked on the Wisbech and Upwell Tramway, as they were fitted with additional cowcatchers and side plates so they could run near public roads. Twenty of these locomotives are preserved, including one "tramway" example.

Livery
Mavis is painted black with yellow hazard stripes on her front and rear. Her name is painted on the sides of her cab in white and "THE FFARQUHAR QUARRY CO. LTD.", is painted on her side plates, also in white.

Appearances
Television Series= {{Scroll box|

Thomas & Friends

 * Series 3 - Mavis, Toby's Tightrope and Escape
 * Series 4 - Rusty to the Rescue and Thomas and the Special Letter
 * Series 5 - Double Teething Troubles, Stepney Gets Lost, Oliver's Find and A Surprise for Percy
 * Series 6 - Salty's Secret, A Bad Day for Harold the Helicopter, Percy's Chocolate Crunch and Buffer Bother
 * Series 7 - Bill, Ben and Fergus and James and the Queen of Sodor
 * Series 8 - Thomas to the Rescue
 * Series 9 - Emily Knows Best
 * Series 10 - Toby's Afternoon Off
 * Series 11 - Dream On and Don't be Silly, Billy
 * Series 12 - Don't Go Back
 * Series 13 - The Early Bird, Percy's Parcel, A Blooming Mess, Thomas and the Runaway Kite and The Biggest Present of All
 * Series 14 - Charlie and Eddie, Thomas in Charge and Thomas and Scruff
 * Series 15 - Toby and Bash, James to the Rescue , Henry's Happy Coal , Surprise, Surprise , Spencer the Grand, Kevin the Steamie , Wonky Whistle , Tree Trouble and Fiery Flynn
 * Series 16 - Race to the Rescue, Thomas Toots the Crows, Bust My Buffers!, Thomas and the Sounds of Sodor, Sodor Surprise Day and Whiff's Wish
 * Series 17 - Henry's Hero and Away From the Sea
 * Series 18 - Not So Slow Coaches, Signals Crossed and Thomas the Quarry Engine
 * Series 19 - The Truth About Toby, Den and Dart and No Help at All
 * Series 20 - Toby's New Friend
 * Series 21 - Springtime for Diesel and Daisy's Perfect Christmas

Specials

 * 1992 - Thomas and the U.K. Trip
 * 2005 - Calling All Engines!
 * 2008 - The Great Discovery
 * 2009 - Hero of the Rails
 * 2010 - Misty Island Rescue
 * 2011 - Day of the Diesels
 * 2012 - Blue Mountain Mystery
 * 2015 - The Adventure Begins and Sodor's Legend of the Lost Treasure
 * 2016 - The Great Race
 * 2017 - Journey Beyond Sodor
 * 2018 - Big World! Big Adventures!

Music Videos

 * Series 3 - Thomas' Anthem
 * Series 4 - Toby
 * Series 5 - It's Great to be an Engine and Come for the Ride
 * Series 6 - Boo! Boo! Choo-Choo
 * Series 7 - There Once Was an Engine Who Ran Away, Salty and The Whistle Song
 * Calling All Engines! - Trying and Together
 * Jack and the Sodor Construction Company - The Work Song and One Friendly Family
 * Series 10 - Doing it Right and There's Always Something New
 * The Great Discovery - Where, oh Where is Thomas? and Thomas, You're the Leader
 * Series 13 - Roll Along and Sounds
 * Series 14 - All You Need
 * Day of the Diesels - Day of the Diesels
 * Series 15 - Hear the Engines Coming
 * Series 16 - Go, Go Thomas
 * Series 17 - Hey, Hey Thomas!
 * Series 18 - The Best Friends Express
 * Thomas' YouTube World Tour - Down by the Docks and The Whistle Song
 * The Adventure Begins - Troublesome Trucks
 * Sodor's Legend of the Lost Treasure - We Make a Team Together
 * Series 20 - Accidents Will Happen
 * The Great Race - I'm Full of Surprises
 * Journey Beyond Sodor - I Want to Go Home
 * Series 21 - Doing it Right and Trying
 * Big World! Big Adventures! - Where in the World is Thomas?
 * Series 22 - All the Girls Around the World

Learning Segments

 * Series 8 - Steamies and Diesels Sounds
 * Calling All Engines! - Thomas Looks for Mavis and Which Diesel Engine with Which Steam Engine?
 * Series 9 - Where Can Neville Find Salty? and Job Destinations - Gordon, Mavis and Percy
 * Series 10 - Help From Your Friends, Percy's Story , Diesels and Steamies , What Makes Salty Happiest? , Who's Under the Coal Dust? - Emily and Mavis as a Steam Engine

Videos
}} Other Media= {{Scroll box|
 * 2014 - Welcome to the Island of Sodor Logan!
 * 2015 - A Friendly Farewell
 * 2020 - Top 5 Songs

Magazine Stories
Mavis also appeared in the magazine stories, Diesel Display, Percy's Stories, Pirate Passengers, Seal Passenger, Special Statue, Spotting Shapes, Stone Shapes, Stone Signal and The Strongest.
 * 1996 - Proud Mavis!, The Little Line and Really Useful Oliver!
 * 1997 - The Poorly Engine! and Star Story!
 * 2000 - A Shock for Mavis, Rude James and A Special Story About Henrietta
 * 2001 - Soak Joke, Diesel Day!, The Eyesight Test , Midnight Mavis and Diesel's Ditch
 * 2002 - The Fat Controller's Diesels! and Diesel's Drums
 * 2003 - Seaside Salty and Special Delivery!
 * 2004 - Fergus' Funnel, Sky Shapes, Toby's Troubles! , Buffer Bother!, Engine Trouble and Rock Shock!
 * 2005 - Working Christmas, Pop Goes the Diesel , Cool Idea, A Treat for Trying, Tractor Engine and Salty and the Trucks
 * 2006 - Shower Power, Emily Knows Best and Disgusted Diesels
 * 2007 - BoCo the Brave, Bridge Bother and Everyone's Friend
 * 2010 - Percy's Parcel, The Best Present of All, Early Bird , Magpie Mavis, Piggy-in-the-middle!, Proud Puffers and Disgusted Diesels
 * 2012 - Bedtime Tale, Early Bird, Thomas and the Sound of Sodor and Thomas Toots the Crows , The Best Present of All , Jack's Tracks!  and Flaming Flynn
 * 2013 - Early Bird! and The Fat Controller's Bedtime Story (Issue 662)
 * 2014 - Confusion and Delay and Leaves on the Line!
 * 2015 - The Perfect Present, Bust My Buffers! and Thomas Saves the Day
 * 2017 - Thomas Saves the Day and Den and Dart

Annual Stories
}}
 * 1990 - Hosepipes and Shunters
 * 1994 - Thomas and the Tickles
 * 1996 - Rings a Bell!
 * 2013 - The Biggest Present of All

Official Description
1993-2000= From Official Website:

From Official Website:
 * -|2000-2010=

From Official Website:
 * -|2010-2021=

Horns
In the sixth series, Mavis shares Salty and Derek's horn sound.

In the seventh series, Mavis reuses Daisy's horn sound from the second series.

In one scene in Thomas and the Sounds of Sodor, Mavis has her Calling All Engines! horn at a lower pitch.

Since the fifteenth series, Mavis reuses Diesel's horn sound from Misty Island Rescue and the fourteenth series.

In the mobile app Read and Play!, Mavis incorrectly has a whistle sound, despite her being a diesel and having a horn.

Trivia

 * The Australian Engine and The American Diesels share the exact same horn sound as Mavis' current one from the fifteenth series onwards.
 * Mavis' brakepipe is swapped from the right side (its position in The Railway Series) to the left in the television series.
 * At The Train Shed, Mavis wore one of Toby's faces.
 * Mavis used to be one of the characters to appear in every series of the television series since her introduction until the twenty-second series, in which she did not appear in any episodes or any of the following series.
 * Mavis' Series 3 horn sound is actually a stock recording of a British Rail (BR) Class 20.
 * Mavis' current horn sound is actually a stock recording of a “Canadian” Nathan K3L diesel.
 * Out of all the diesels, Mavis has the most horn sounds.