Big World! Big Adventures! ( not named; does not speak), The Story of Diesel the Diesel Engine, The Story of Emily the Clever Engine ( not named; does not speak), Thomas and the Gingerbread Train, The Missing Christmas Decorations and Last Train for Christmas Gordon Takes a Tumble | Henry and the Elephant | Percy Takes a Plunge | Thomas and the Special Letter | James and the Trouble with Trees | Spic and Span | Diesel from Thomas to the Rescue | Emily's Adventure Derek's horn was later used for Mavis in the sixth series, the foghorn in the sixth series, Salty for Day of the Diesels to the twenty-fourth series, Diesel 10 in some merchandise and video games and Diesel in Fun Cubes. Derek was not named in any of his appearances as in his debut episode, Double Teething Troubles: he was only referred to as the new Diesel, or simply Diesel and in the music video Trying, the lyrics say "Who's that straining up the hill?" rather than Derek's usual name. This makes him the first character to only be named in merchandise ranges.

This is the third time an engine gets covered in oil. The first being the eighth series episode, Percy's Big Mistake, and the second being the seventeenth series episode, Away From the Sea. At the Dieselworks, the workers cannot find the required parts to fix Daisy. Mavis tells 'Arry and Bert that Den and Dart say she may have to be scrapped, horrifying them. They tell Diesel, but he again thinks that they are blaming him. Later at a level crossing, Paxton arrives to tell Diesel about the rumours, but this time Diesel has had enough. At the Sodor Steamworks, Paxton asks Victor if he has any spare puff. Victor is puzzled. Then, Toby puffs in and starts to laugh. Paxton is not impressed; Thomas' missing puff is a very serious matter. Toby explains that "puff" is just another word for "steam" and that Thomas will be fine as soon as his fire dries out. Paxton is left feeling foolish yet again. James' first major speaking role since the fifteenth series episode, James to the Rescue. It also marks his first speaking role in a special since Hero of the Rails in the Japanese dub. Their first appearances since the twelfth series episodes, The Man in the Hills and Push Me, Pull You respectively and their first appearance in full CGI.Paxton is painted dark green with double yellow lining going down alongside his ladders near the front, and then going his sides toward the cab. He has red traction rods. His paint is chipped in places, and shows signs of weathering. The first time a driver has a speaking role since the tenth series episode, It's Good to be Gordon. A few days later, Thomas goes to the Steamworks. Luke is there with Victor who jokes that he has found a yellow engine. Rheneas then puffs out of the Steamworks smiling. He has been given a new coat of bright yellow paint. Thomas beams from buffer-to-buffer; a bright new colour really does mean a new life for his friends, and he and everyone else laughs. In the eighteenth series, he (along with Diesel, Den and Dart) hid from Paxton. But after Paxton was unable to find them, Sidney, along with Den and Dart started to think that Diesel's joke went a little too far, but Paxton managed to find them again at the end of the day. Paxton is based on a British Rail (BR) Class 08 diesel-electric shunter. In the real world, BR Class 08s were in fact the most successful shunting engines in the world with 996 of them built. Over seventy of them are preserved by heritage railways, such as the Dean Forest Railway and museums, such as the National Railway Museum. Around one-hundred BR Class 08s also remain in service on the national rail network.

Thomas' YouTube World Tour - A World Around You, Navigation, Never, Never, Never Give Up and Thomas' Anthem ( mentioned) Paxton does not think the situation is a joke at all. He clatters up to the Blue Mountain Quarry to ask if there are any diesels there. Rusty calls out to him, but Paxton does not hear him as he is already rolling away to try somewhere else. At Knapford Station, Paxton asks if Thomas has seen any diesel engines. Thomas says he can see Paxton, but Paxton tells him it is the other diesels that have disappeared. Paxton leaves Thomas rather confused. He has been known to work at Blue Mountain Quarry and was once involved in an accident there when Blondin Bridge collapsed. He was then sent to the Sodor Dieselworks for repairs.Derek's ERTL prototype shows him with a darker and different face and a darker colour scheme. His second Ertl promotional artwork incorrectly depicts him with steam engine type wheels, a darker colour scheme, a grey undercarriage, square buffers and with no red buffer beam. Sir Topham Hatt ( Stephen Hatt) | Albert Regaby | Kevin Volley | Old Bailey | Mr. Conductor | Mr. Arkwright | Mr. Perkins Salty's last speaking role in a special until Tale of the Brave and thus his last appearance in a special in the Nitrogen era.

In the twenty-first series, he damaged Daisy's springs and caused mischief between her and Harvey by telling them both that the other was boasting about being unique, which led him falling into the sea after his plan failed. He later brought the coal delivery to the steam engines during a big freeze. In the Latin American, Brazilian Portuguese and French dubs, Victor's first language is Greek instead of Spanish. Wellsworth Scrap Yard's first appearance in an episode since the third series episode, Edward, Trevor and the Really Useful Party.Before Stephen says "Hello Paxton" both he and Paxton come to a stop, but in the next scene they are moving again. Series 18 - Disappearing Diesels, Toad's Adventure ( cameo), Last Train for Christmas ( does not speak) and Duncan the Humbug ( cameo) In the sixteenth series, he and Dart helped Thomas fix Ol' Wheezy and repaired Gordon's bufferbeam.