Marklin is a small black tank engine who was used for moving background rolling stock in the first season. His model was based upon the BR 80 heavy-duty tank engines used primarily in Germany and Poland. Marklin was possibly modified and used as Puffa for Thomas’ Sister series “TUGS” however this has little evidence to back it up but the engines are both BR 80’s.

Martha and Jennifer are Emily’s Coaches that were given to Emily after she saved Oliver and Toad from being in an accident after stranding on the cross points.

Mavis is a Quarry Diesel, built in 1952 by the Drewry Car Co. and came to Sodor in 1962. Mavis is particularly fond of putting Trucks in different places, despite Toby’s protests. Toby finally lost his patience and left Mavis to her own choices. Mavis, urged by Diesel, started to ignore Toby’s advice and ended up looking silly when she stuck outside Ffarquhar. Mavis was then forbidden to leave the Quarry, but thaw increased production at Centre Island Quarry. Mavis persuaded the manager to let her go up as far as the first crossing as to shunt Trucks quicker. She then formulated a plan to pass the crossing with help from the Trucks. However, the plan backfired when the trucks decided to bump Toby instead, and he ended up being suspended by flimsy rails over a rushing stream and Mavis had to help. Mavis confessed, but the Fat Controller and the Manager were pleased by Mavis' courage and honesty and allowed her occasional trips to Ffarquhar. Mavis was involved in a collision with a Lorry in 1987 and Toby had to do her work. Mavis works mainly with Bill, Ben and BoCo at Centre Island Quarry when Toby isn’t there.

Max and Monty are devious dump truck twins. Max is number 15 and Monty is number 16 in the Pack. They are known to cause trouble for the rest of the Pack and the engines too, but are sternly scolded by Miss Jenny when they are found out. Despite being unruly at times with dangerous stunts, they both have a good side – somewhere – and do the work like everyone else. Max first appeared in Season 6 and Monty in Season 10.

The North Western Railway suffered an engine shortage back in its early days. Aside from Thomas, Edward, the “Coffee Pots” and the Wellsworth and Suddery Engines, it had no engines of its own. Therefore engines were hired from the Midland Railway until more could be purchased. This arrangement had ended by 1922.

Midlander is Rusty’s twin on the Talyllyn Railway. He was built in 1940. In reality Rusty is based on Midlander.

Mighty Mac is a double ended Fairlie locomotive. Despite the different personalities of each end, Might Mac is technically one engine. Mighty is the older of the two and is distinguished by the flick of hair meant to emulate Arnold Schwarzenegger. Mac is the younger half and is distinguished by his youthful features, round nose and freckled cheeks. They were built in 1992 and arrived to Sodor in 2005. When they first arrived, they were inexperienced and only worked in shunting yards. This lack of knowledge caused lots of conflict between the two halves, which placed themselves and their passengers in great danger whilst running an important errand. But, with advice from Thomas in mind, they were able to complete their task and realize the value of working as one.

Mike is a strong red engine who prefers goods trains to passengers. His temper matches his paint, and he can often be hot-headed. He is proud of his whistle which he once blew off trying to shoo off a cow. He was built in 1966 and worked on an unnamed line in England until 1967. He with Rex and Bert were sent to Sodor to work on the Arlesdale Railway. Mike states he was once green and because of that, people would confuse him for Rex. He is proud that he has his own unique color on the Arlesdale Railway.

Milk wagons are used for Milk transport. They are labeled TIDMOUTH MILK. They come from the Dairy factory in Tidmouth. One is usually taken with Thomas’ first branch line train. This caused a problem when Daisy first arrived, as she refused to pull it and told Percy to take it. The Milk Vans are often seen in sidings. Sometimes they are not properly adjusted and the labeling on them are up on top of them. Sometimes they don’t have the Milk label on them at all.

The Slate Quarries on the Skarloey Railway had been taken over by the Ministry of Defence in accordance to “The Island of Sodor: Its People, History and Railways”, after their closure for storage of ammunition. The MoD uses their own engine to shunt the sidings in the Quarry, a black electric powered engine described as “Beetle like”. Due to the secretive nature of its work, the engine has never been seen.

Molly

Molly is a yellow GER Claud Hamilton 4-4-0 engine. Built by James Holden in 1904, she arrived to Sodor in 2005. Molly is the sensitive type. Her feelings are hurt easily, and she gets embarrassed very easily, but she can have courage to do things right. When she arrived; she was laughed at by Emily for having empty trucks. Her feelings were very hurt, so Thomas came up with an idea. He had workmen decorate Molly’s trucks with lanterns and cover them with tarpaulins, to make them look special to the other engines. The wind, however, blew the covers off in front of Gordon, Percy and Emily. Molly ran away, embarrassed, until she learned that the engines at the depot needed her empty trucks to carry coal. When she arrived at the depot, Edward, Henry and James were grateful to see her. Gordon however was annoyed when he had to wait at a signal for Molly’s and Thomas’ trains to pass.

Mr. Conductor

Mr. Conductor is a small 20-centimeter tall conductor that appeared in Thomas’ American spin-off “Shining Time Station” and “Thomas & the Magic Railroad” as well. Mr. Conductor is famous for telling the Children stories about Thomas and his friends/ The First Mr. Conductor was portrayed by Ringo Starr (the first narrator for both the UK and the US). He was discovered by Matt while he was cleaning up the station. Stacy knew he was there but preferred not to mention him to anyone. He was initially afraid of Harry, the station’s engineer, but in the end the others convinced him if he tried to talk to Harry, they could be friends. In the episode “Tis a Gift”, Mr. Conductor left for the North Pole with Nicholas J.B. King, Esquire, the head of the Indian valley, decided to keep the station open after learning that Mr. Conductor lived there. The Second Mr. Conductor was portrayed by George Carlin (The Second Narrator for the US Version) and was the American cousin of the first. When compared to the original, this Mr. Conductor had a more brightly colored outfit and more-known sense of humor, as he is occasionally seen playing tricks on Schemer. In a few cases, after some gold dust landed on a drawing of him, an evil twin was created who caused trouble at the Station, and could only be turned back into the picture by using magic dust or glue. The third Mr. Conductor was portrayed by Alec Baldwin (the third US Narrator) and appeared in the movie “Thomas & the Magic Railroad”. No specific relationships between the other two are given. Mr. Conductor had to watch over the engines on Sodor while Sir Topham Hatt was away, but he found that his gold dust supply was diminishing, and he might not be able to return to Shining Time. While being pursued by Diesel 10, who wanted to destroy the steam engines, Mr. Conductor had to solve the riddle to create more gold dust. Eventually with the help of C. Junior, Lily, Lady, and Burnett Stone, he found the source of the gold dust. In the end of the movie C. Junior became the fourth Mr. Conductor.

Mr. Fergus Duncan/The Small Controller

Mr. Fergus Duncan, also known as the Small Controller, is the controller of the Arlesdale Railway. He is bigger than either Sir Topham Hatt or the Thin Controller; the nickname refers to the fact that his railway is often called the “Small” Railway.

Mr. Ivo Hugh

Mr. Ivo Hugh is the former Chief Mechanical Engineer of the Skarloey Railway. He retired sometime before the events of "New Little Engine", and his son, Ivo Hugh II, took over his position. He was later honored by having Ivo Hugh named after him. It is revealed in "Gallant Old Engine" that, while Rheneas was solely running the Skarloey Railway, he was the guard for the railway. After Rusty's arrival, he also became his driver. He also had a private transportation vehicle on the Skarloey Railway, "Mark V".

Mr. Percival/The Thin Controller

Mr. Peregrine Percival also called “The Thin Controller” is the current manager of the Skarloey Railway since 2004. He was hired by Sir Topham Hatt who could no longer handle the Skarloey Railway because of the ever increasing Industry of the Standard Gauge Line. Mr. Percival has a dislike for cars and uses his bicycle to get around the line. He has five children and is married to Polly Percival. Mr. Percival’s hero is Sir Topham Hatt.

Mr. Sir Handel Brown

Sir Handel Brown I, also known as the Owner, is the owner of the Skarloey Railway. He has other business to attend to so he leaves The Thin Controller in charge. He also has partial ownership to the Arlesdale Railway. He is most likely married and has five daughters named Agnes, Ruth, Lucy, Jemima and Beatrice. The original coaches were named after them. He has a son named Sir Handel Lloyd Brown II, who took control of the Skarloey Railway after his retirement. Apparently Lady Hatt is his Sister. This first Sir Handel Brown lived from 1875-1950 and Sir Handel Lloyd Brown II was born in 1924.

Mrs. Kyndley

Ms. Jenny Packard

Jenny Packard is a friendly Irish woman who is owner of the Sodor Construction Company, and takes responsibility for a number of the bigger building projects around Sodor. She took over the company from her father, who founded the company. When she is pleased with someone, she compliments him/her with “Ye’d make a mother proud”.

Murdoch

Murdoch is a large and strong orange BR standard class 9F, built in 1960 by Robert Riddles at Swindon Works. He arrived to Sodor in 2003 to relieve the engines of their heavy work loads. He was big and strong, so the other engines were eager to learn more about him. Murdoch, however, disliked the noise of their chatter and got cross at Salty and Harvey when they inquired about his past exploits. The next day while taking a goods train, he came across some sheep that broke free from the fence. The noise bothered him a lot, he was grateful when Toby came with the farmer and shooed them away. That night he apologized to Salty and Harvey. Murdoch was happy, but shy about being decorated during the May Day festivities. On one windy autumn day, a large red carpet landed on the back of Murdoch's goods train, unbeknownst to Murdoch. Percy briefly chased down after it, until the heavy winds blew it away again. Emily once needed Murdoch's help when she became stranded in the mud and near the end Emily asked him which track she should take; Murdoch told Emily that the tracks on Gordon's Hill were being cleared and told her to take the valley route instead. Murdoch pulled Rocky to help Thomas recover the lost materials for the Sodor River Bridge's restoration.

Mutt

Mutt is Billy Twofeather’s friendly dog that lives at Shining Time Station among the company of Mr. Conductor and Stacy Jones. He misses Billy, when he is away, and is always there to greet him when his train comes in. Mutt was the reason that Lily made it to Sodor, by putting her on the wrong Train. He was played by two Hollywood dog’s named Bently and Dila.

Nancy

Nancy is a guard’s daughter who lives near the Skarloey Railway and sometimes polishes the engines. On one occasion she was polishing Skarloey for Rheneas’ return, and Duncan became very jealous after she had no time to clean him as she had to help the Refreshment Lady. She once polished Skarloey for his centenary. After he became cross and she called him a “crosspatch”, Skarloey told her the story of his first days on the railway and the time he was a “crosspatch”. In the Railway Series, she has grown up and lives with her husband on the Isle of Man.

Ned

Ned is an old steam shovel and is number 19 of the pack. Ned means well but can sometimes be clumsy. Indeed, he once nearly caused a terrible accident by knocking out the keystone of a bridge when Thomas was due to cross with a goods train. Luckily Jack was able to save the day by supporting the bridge until Thomas realized what was wrong. Ned has his jib arm right in front of his face, which could make visibility difficult. Ned mostly carries out clearance work and quarry digging. Ned knocked some buildings down all at once in “Thomas’ Trusty Friends”. Ned has learnt his lesson about being careless in some episodes. But apart from the minor bumps and accidents, Ned's heart is as big as his bucket and he is a valued member of the Pack. Ned can be loyal and hard-working for his friends.

Neil

Neil is an old time engine that has an unusual box shape and a Scottish accent. He is a simple but kind engine who befriended Skarloey when he was young. He was built in 1860 and is Sodor & Mainland Engine number 2. He and his brothers on the Sodor and Mainland were scrapped when the line closed; most likely due to incapability’s to handle heavier loads.

Nelson

Neville

Nora

Old Slow Coach

Old Stuck-Up

Oliver

Oliver

Peel Godred Engines

Percy

Peter Sam

Peter Sam (formally known as Stuart) is a Narrow Gauge Engine. He was built in 1923 by Kerr Stuart at Stoke-on-Trent. Peter Sam is a kind, well-mannered and popular with passengers and coaches alike. Even the trucks don’t play tricks on him. While living on the Mid Sodor Railway, he was cheeky and occasionally made fun of Duke until told what happened to Smudger. After the line closed down in 1947, he and Falcon were sold to the Sodor Aluminum Company at Peel Godred and worked there until 1951, at which time both engines were sheeted for a year until they were purchased by the Skarloey Railway in 1951. Upon arriving Stuart – renamed Peter Sam – had many adventures. One of his more notable stories arcs involved his funnel, which was severely damaged after an accident at the incline. The Funnel eventually fell off as he passed under a tunnel after striking an icicle, and it was temporarily replaced with a rusty pipe. Peter Sam was soon given a new funnel, a Giesl injector which suits him much better. Peter Sam while being named Stuart was named after his builder. He is currently named after the previous Thin Controller, Mr. Peter Sam.

Pip and Emma

Philippa, better known as Pip and Emma make up a BR HST InterCity 25. They were built in 1976 at BREL Crewe Works. They came to Sodor in 1987, when Gordon took a trip to Carlisle. Pip and Emma were asked to take the express back to Tidmouth for him. Pip’s cooling system was faulty, but Emma was in order and so off they went. Unfortunately Emma failed near Crovan’s Gate and so James pulled them home. The engines were quick to befriend Pip and Emma, and after Gordon had returned Douglas took them back to Barrow-in-Furness. In 1996, they came back to Sodor and were borrowed to take Prince Phillip and some guests to Tidmouth for the Railway Series Golden Jubilee. Following Privatization, the Fat Controller purchased them to run a faster service to run a faster service in London.

Proteus is a legendary narrow gauge engine with a magic lamp hung upon his funnel. He was built in 1878 by Hughes’ Loco and Tramway Engine Works Ltd. Legend has it that if someone finds the lamp, their wishes will be granted. Skarloey told this story to the other engines, which made Peter Sam search the line, looking for this lamp. The clues to finding his magic lamp are feeling a rush of wind when the lamp is near, hearing a strange creaking sound, and see a flickering light that shines on and off.

P.T. Boomer, also incorrectly known as Pete Boom, was a character expected to be seen in “Thomas & the Magic Railroad”. He was cut from the film as test audiences complained he was too scary. He was portrayed by Canadian Actor, Doug Lennox. P.T. Boomer was always very jealous of the relationship Burnett had with Tasha (Lily’s Grandmother), and bullied Burnett into allowing him to take Lady for a run. After crashing her, he left Shining Time and Burnett spent years trying to restore her to no avail. Boomer is described in the script as being "a drifter through choice". He returns now a good forty years later a bitter and dark character, hell-bent on getting rid of Lady. He owns a motorcycle that he caused havoc about on the Shining Time route, once brutally cutting off The Rainbow Sun on the crossing, causing the train to stop abruptly. Boomer is the reason behind Mutt’s unease and reason for bringing Lily to Shining Time rather than letting her go on to Muffle Mountain. Boomer spends much of his time throughout the movie arguing with Burnett Stone and digging into the mountain looking for Lady. He has no ownership or connections with Diesel 10, other than they shared desire to destroy Lady and Sodor. He doesn't believe in magic, and when he finds Thomas (after setting off the explosion that sends him hurtling off the cliff of Muffle Mountain) in the real world, he believes that he's just a huge toy. Thomas is the reason why Boomer ends up on Sodor; he's transported back in Thomas's cab on the way back through the Magic Railroad. He and Diesel 10 met their fates during the chase scene when they plunged off the viaduct into a barge filled with sludge. He was cut from the movie so close to the premiere that he appeared in a trailer for the movie. He even appears in coloring books. Doug Lennox states that he was told about being cut over the phone.

Rex is a green engine that works on the Arlesdale Railway. He was built in 1923 by Davey Paxman & Co. and worked on an unknown line in England until it closed in 1967. He likes nothing more than teasing Mike. He is a hard worker but sometimes has trouble with traction. After the railway secured a deal to transport wool to Arlesburgh, Rex was chosen to pull the first train, but after a negligent farmhand split some wool bales on the rails he was derailed. His train was rescued, but Rex had to remain there for several days until being lifted out.

Rheneas

Rheneas is a Narrow Gauge Tank Engine. He was built by Fletcher, Jennings Co. at Whitehaven in 1865 and arrived on the Skarloey Railway in 1865. Unlike Skarloey, Rheneas was stern and thoughtful, and fell out with Skarloey after the latter called him a “stick-in-the-mud” following an argument over cabs. The two reconciled after Rheneas saved Skarloey from a landslide. Rheneas literally saved the railway by keeping service through a very lean period in the late 1940s. By 1950 Skarloey was in need of repairs, leaving Rheneas to run the line. He managed to pull a full train home one rainy day despite jammed valve gear, and thus was rewarded with an overhaul. Rheneas returned to service in 1962 after a major overhaul involving firebox repairs and an extensive mechanical overhaul; as part of the overhaul he has been fitted with air braking equipment.

Rickety is a blue Troublesome Truck that appeared in the first illustration of “Toad Stands By” teasing Oliver along with the other trucks. After The Naughty Pink Truck lost his position as the leader, Rickety became leader.

Rocky is a large Breakdown Crane. He arrived to Sodor in 2006 and Gordon and Edward were skeptical about his abilities, noting that Harvey could travel under his own power. Later, Edward carelessly left the docks before his cargo was properly secured, causing his pipes to spill onto the mainline. Edward was adamant that Harvey clear up the line, but the little engine was too small to finish it quickly, and as a result Gordon crashed into the pipes. Edward returned to Brendam to pick up Rocky, who cleared the line and brought Gordon back to the Rails. Since this incident, Rocky has become an invaluable asset to the railway. He is frequently called upon to lift loads and help out after accidents.

Rod is an Orange caterpillar crane that helped repair the broken bridge outside Hackenback in “Washout”. He is named Rod by the Sodor Island Forums

Rosie is a Purple SR USA Class 0-6-0T Tank Engine, built in 1942 in Iowa and shipped to Britain in 1942. After D-Day landings she and the other engines were sent to mainland Europe to assist with the war effort. Sometime between 1945 and 2006, Rosie made her way to Sodor. Rosie idolized Thomas to the point of hero-worship and imitation. Though this is said to be the most sincere form of flattery, it had only served to irritate Thomas whilst he was trying to deliver a special birthday post train to Alice at Hill Farm. After Thomas had an accident in course of delivering this train, she helped him and he started to respect her. Rosie later helped Thomas shunt trucks until Hector frightened her away. Rosie was later charged with acting as back-engine to Emily with the funfair special. Wanting to take the train herself, and thinking she was doing Emily a favor, Rosie succeeded only in creating confusion and delay on a grand scale, but eventually set things right.

Royal Claude is a Claude Hamilton Locomotive from the LNER that was around whilst Toby was working at the Yarmouth Harbor as part of the LNER. He was built in 1904 by James Holden. He is the same class as Molly. It can be assumed he works on the main line.

Rusty is a Diesel who does maintenance work for the Skarloey Railway. He was built by Ruston and Hornsby in 1954 and came to Sodor in 1958 to help Sir Handel and Peter Sam and do maintenance work while Skarloey and Rheneas were being repaired. Rusty is a helpful and kind little Diesel but initially once refused to help Duncan after he derailed. When Sir Handel claimed to be ill, Rusty promised to follow after Peter Sam with Sir Handel’s trucks. He later helped Peter Sam away from the wreckage of slate trucks. He can sometimes be impatient and careless at times but he is useful and tries to get them done well. In the US Version of the 9^th Season, Rusty was identified as Female but due to complaints they were edited for DVD and later televised airings now identifying him as male.