Thomas is a blue tank engine. He is engine number 1. Thomas lives on the island of Sodor. He has a branch line, and two passenger coaches named Annie and Clarabel. Thomas is cheeky and fussy. He is best friends with Percy.
Percy is a green tank engine. He is engine number 6. Percy is the junior member of the principal team of engines. His favorite job is delivering the mail. Percy is best friends with Thomas.
James is a red tender engine. He is engine number 5. James is vain, and is a mixed-traffic engine, meaning that he can pull both freight and passengers. He likes to think of himself as a really splendid engine.
Gordon is a blue tender engine. He is engine number 4. Gordon is the senior member of the engine family. His favorite job is pulling the express. Gordon is the fastest engine on the island of Sodor.
Henry is a green tender engine. He is engine number 3. Henry is a long, fast engine. He had to use special Welsh coal in the past, but he was given a new shape.
Toby is a brown steam tram engine. He is engine number 7. Toby is old-fashioned. He has a tram coach named Henrietta. Toby also has his own shed at Arlesdale End.
Edward is a blue tender engine. He is engine number 2. Edward is a kind, old, and wise engine. He is the one who calms everyone down and restores order when the other engines misbehave.
Emily is a green tender engine. She has shiny paintwork and gleaming brass fittings. Emily also has her own pair of coaches. She speaks with a Scottish accent.
Mavis is a black tramway diesel engine. She lives and works at Anopha Quarry. Mavis is young, and full of her own ideas. She doesn't take kindly to advice.
Salty is a red diesel engine. He carries the number 2991, and has buck teeth. Salty works at Brendam Docks. He loves telling tales of his life by the sea. Salty also enjoys singing sea shanties. He speaks with a West Country accent, and uses nautical slang.
Arthur is a red/burgundy tank engine. He has a branch line near the fishing village. Arthur has a spotless record. His job is to shunt trucks and pull freight. Arthur is the biggest tank engine on the island of Sodor.
Fergus is a blue traction engine. He runs on rails instead of roads. Fergus can be irritated when other engines muck about. His catchphrase is "Do it right!" Fergus is the pride of the Cement Works.
Skarloey is a red narrow gauge tank engine. He is number 1 on the Skarloey Railway. Skarloey is a very chipper hard worker. His best friend is Rheneas. Skarloey's sole purpose in life is to work hard and uphold the fine reputation of his railway. His name is Sudric for "Lake in the woods."
Duncan is a yellow narrow gauge tank engine. He is number 6 on the Skarloey Railway. Duncan speaks with a Scottish accent. He keeps busy and means well, but is bouncy and rude. Duncan has been known to sing, sway, and swivel around. His driver calls it "rock 'n' roll."
Rusty is an orange narrow gauge diesel engine. He is number 5 on the Skarloey Railway. Rusty loves adventure, as well as the other engines, which makes their lives much easier. He is close friends with Skarloey, Peter Sam, and Rheneas.
Bertie is a red bus. He has a great deal in common with Thomas. Bertie is always ready to help any engine prepared to admit that just sometimes, roads have their uses as well as rails. He and Thomas have been the firmest of friends ever since their great race.