Thomas the Tank Engine Wikia
The Railway Series
Thomas & Friends

This article is about the tractor. You may be looking for the US title for the episode or the Story Library book.

“What ugly wheels you've got."
"They're not ugly, they're caterpillars. I can go anywhere;
I don't need rails.”
Thomas and Terence meet for the first time[src]

Terence is an orange caterpillar tractor who usually works near Thomas' Branch Line. He is owned and driven by Farmer Finney.


The Railway Series

Thomas insulted Terence for having caterpillar tracks but regretted it and befriended Terence after he pulled him out of a snowdrift.

Terence befriended Duck while Thomas was at Crovan's Gate Works.

Terence did Percy's shunting work at Ffarquhar while Percy was at Knapford Harbour.

Terence helped to build a barn the day Victoria was sent back to Thomas' Branch Line. After swerving for a boulder by the Hackenbeck tunnel, Terence's trailer fell down the cutting and balanced dangerously on a bush.

Thomas & Friends

As in the Railway Series, Terence rescued Thomas when he got stuck in the snow. He later helped Mrs. Kyndley when her house was snowed up and looked after it when she went with the engines to a Christmas Party. In the second series, Terence befriended Duck while Thomas was at the works and attended the Christmas Party at Tidmouth.

When a storm destroyed much of the forest, Terence helped with the planting of new trees and assured Henry that the forest would look better than ever before. Later, when Bertie got stuck in the mud at the Vicar of Wellsworth's party, Terence used strong ropes to pull him out. During the winter, when villagers were stranded by snow, Terence helped them by ploughing the snow away.

In the fifth series, he warned James about the damage that trees can do and reminded Percy that Mrs. Kyndley's daughter was to get married. He was also seen working at Boulder Quarry.

In the sixth series, he helped clear away fallen rock on the line which had derailed Thomas and almost Toby. He was later seen ploughing in a field when Duncan lost his whistle trying to surprise him.

In the seventh series, he helped clear away a tree that had fallen on the line and pulled Elizabeth out of the snow.

In The Great Discovery, when Thomas went missing, Terence helped with the search for him and once Thomas was found, Terence along with Trevor informed Harvey of the news.

Once, when Terence was collecting Christmas trees for the holiday market, Thomas had requested a large tree for the party at Ulfstead Castle. Terence took a shortcut across a frozen lake to get to the tree, but on the way back, the ice began to break. Thomas managed to pull Terence free from the water, but the tree was lost.

Sometime later at McColl Farm, he stared confused at some diesel parts that Rebecca had dropped off there and took the produce train that Paxton was supposed to collect, unaware that this was part of Diesel´s trick until Rebecca told Sir Topham Hatt about what Diesel did.


Terence is an assertive, orange tractor with caterpillar tracks. The engines find these very unusual, but Terence is very capable of proving that he does not need rails and that his tracks allow him to go practically anywhere. He takes any teasing in the name of fun and is happy to get on with his job, usually partaking in agricultural work. Terence never hesitates to assist in emergencies or sticky situations, road or rail, due to his helpful, forgiving nature. His tracks are particularly invaluable in harsh winter conditions when snow can affect transport across the Island. He may be slow, but he is versatile, adaptable and helpful. He can usually be found transporting agricultural produce or cheerily ploughing fields beside Thomas' branch line. Sometimes, though, he can get a little overconfident and forget to listen to his own advice: "You have to be sensible if you want to stay safe!"

Technical Details


Terence is based on a Caterpillar Model 70, the largest and last design of petrol-powered tractors in the Caterpillar Tractor Company's range. Compared to the real vehicle, Terence's design was given notable modifications; he is longer in length, his mudguards go all the way across the top of his tracks, and his engine is concealed to a greater extent. The construction tractors are also based on this tractor.


Terence is painted orange with grey caterpillar tracks and a black engine and exhaust pipe.


Magazine Stories

Terence also appeared in the magazine stories, Christmas Puddings, Diesel Display, Good Games, Bad Sport!, Holiday Havoc!, Rude James, Take Off with Terence and The Huge Horses!.

Annual Stories


Audio Stories


  • According to The Thomas the Tank Engine Man, Terence was originally going to be called "Terry", but was later changed to the current and more formal version of the name. However, his original name is seen on the 1971 Railway Map of the Island of Sodor.
  • Terence is the first non-rail character introduced in the entire series, discounting Sir Topham Hatt or any other Human Characters.
  • Terence is the first non-rail character to have an American basis used for a character design, albeit he doesn't speak English with an American accent except in the US dub of the first five series, at least with George Carlin and Alec Baldwin narrating those series. Unlike Trevor where he consistently has a Southern accent in the US dub of the CGI era, Terence has a West Country British accent in both English dubs.
  • Terence is drawn with a cab, but without his widow's peak in the book, Thomas's Christmas Party.
  • In some merchandising and books, Terence's name is sometimes misspelt as "Terrence".
  • On early Spanish translations of the Random House books, Terence was known as Terencio.
  • During the production of the first series, Terence was nicknamed "Drac the Trac" by the production crew.[2]
  • In the French dub of the first seven series, Terence's name is Thierry.
  • The Polish Story Library book Terence is named Teodor, though his name in the Polish dub is Tymcio.
  • Up until the twenty-second series, in which Bertie was absent, Terence was the only character introduced in the first series to be absent from any series afterwards.
  • The shape of his face seems to have changed over time.
  • Terence is a bit longer than his basis.
  • Up until the twenty-first series, Terence never had any eyebrows in the television series, although he has eyebrows in some illustrations and merchandise.
    • Additionally, his model version's treads are made of parts from a model of the German WWII Tiger I tank. The most notable is the caterpillars.
  • In some scenes, Terence's plough is shown lifted above the ground via small hydraulics yet the company that made his basis designed a set of beams, an A-frame and a winch to lift and lower the plough.
    • One part on Terence's plough was made using a LEGO element.
  • Terence's television series model is currently on display at Drayton Manor. His detachable plough, however, has been broken since the display opened.
  • In the 1995 annual story, James Gets Cracking, Terence's driver was revealed to be named Farmer Finney. However, he has been driven by Jem Cole, Farmer McColl and Farmer Collett once before. In a deleted scene of Ghost Train, Terence was driven by Sam the Farmer.
  • According to a magazine article, Terence sometimes works on Farmer Trotter's Pig Farm.
  • Terence had a total of four facial expressions, one of which a concerned face was never shown on-screen.



Non-rail vehicles

* RWS only | ** T&F only | *** Other Media only