Murdoch is a mighty engine with ten drive wheels. He was brought to the Island to help with the heavy workload and pull freight on the main line. As shy as he is strong, Murdoch can often be found seeking peace and quiet.

James is a medium sized engine. He likes to think of himself as a really splendid engine. This can occasionally lead to grandiose ideas about the sort of work suitable for such a noble creature, which invariably lands James in trouble. James is a mixed traffic engine, which means he can pull both passenger coaches and freight cars.

Gordon is the senior member of the engine family, the fastest and most powerful engine on the rails. He's extremely proud and inclined to boast. He's good-hearted and always willing to use his superior strength.

Twin of Donald!

The antics of these Scottish twins who hate to be parted sometimes lead to trouble. They are hard workers who are particularly good at plowing snow.

Thomas the Train is a cheeky, fussy little engine, often getting into scrapes, usually by being over-eager to do things best left to bigger and more sensible engines. He has his own branch line where he pulls his coaches Annie and Clarabel.

Firmest of friends with Thomas since their Great Race, Bertie understands that both rails and roads are useful on the Island.

Percy is the junior member of the principal team of engines. This little chap is normally quite happy puffing around the yard. He's always keen to oblige, a fact of which the other engines are apt to take advantage.

Lady is a very special golden engine who holds the secret to The Magic Railroad. With her use of the magic gold dust, she was able to travel to the Island of Sodor and help Thomas the train and the Conductor defeat Diesel 10.

A renegade diesel engine on The Island of Sodor who is 10 out of 10 for brutal strength and devious deeds. He and his claw are out to destroy the harmony of Sir Topham Hatt's Railway.

Peter Sam is a happy, kind engine. He is often teased by the others, but they love him really. He was tutored by Duke and has great respect for him, despite ribbing him about his age. Being a hard worker by nature, he seldom grumbles about late hours or extra work. (Peter Sam is also known as Stuart.)

Jack is the friendliest front-loader the Island has ever seen. He loves his job so much that he often takes on tasks he probably shouldn't. Push on cab to raise scoop, which carries all magnetic cargo. As featured in "New Friends for Thomas" video.

Salty is an old diesel engine who loves working at the docks and telling tales. Introduced in the video "Salty's Secret and Other Stories".

Dennis is a lazy diesel who will do anything to get out of work. To disguise this, he takes advantage of any opportunity to create an excuse and avoid a decent day's work. Dennis is different in color and styling from any other engine on Sodor. His distinct facial expression gives this character a unique personality.

A plain speaking engine, Duncan keeps busy and means well. Often bouncy and occasionally rude, Duncan is famous for singing, swaying and swiveling around. His driver calls him "Rock and Roll".