The humanized spinoff of the beloved Thomas and Friends.
- Thomas Boskovsky Billinton
16-year-old, black hair, blue T-shirt with the number one on it, dark blue jeans, blue eyes, brown shoes, red shirt collar.
- Percy Jones Avonside
15-year-old, brown hair, light green T-shirt with the number six on it, dark blue jeans, green eyes, green shoes with white soles.
- James Ivatt Hughes
17-year-old, black hair, red T-shirt with the number five on it, blue jeans, brown eyes, brown shoes.
- Gordon Herbert Gresley
18-year-old, mixed brunette/raven hair, brown eyes, black shoes
- Henry Bill Stanier
18-year-old, raven hair, green eyes
- Edward Peter Stewart
19-year-old, raven hair, blue eyes
- Molly Jamie Holden
16-year-old, blond hair, yellow T-shirt, red pants, blue eyes, red sandals, gold earings, blue necklace, white hair braid, red shirt collar.
- Emily Patricia Stirling
16-year-old, brown hair with two pony tails sticking on both sides of her head, dark green T-shirt with a brown line design or a green crop top exposing her belly button, blue jeans, green eyes, green shoes, blue earings, green hair braid.
- Billy Wardle
Orange shirt and two big teeth sticking out
- Charlie Wardle
Purple shirt and a normal set of teeth
- Toby Holden Worsdell
Brown hair, brown t-shirt with the number 7 on it
- Neville Bullied
- Montague Charles "Duck" Swindon
- Donald John McIntosh and Douglas Frederick McIntosh
Donald has blond hair and brown eyes, Douglas has black hair and blue eyes
- Roseann "Rosie" Pauline Vulcan
14-year-old, pink shirt, purple skirt, red pants and hair with two small pony tails
- Oliver Collet
- Hiro Shima
- Daisy Cammell
17-year-old, blond hair, green top and black skirt
- Mavis Drewry
15-year-old, long black hair with yellow stripes and pony tails, black shirt with "Ffarquhar Quarry Co." on it, a yellow pattern on the selves and a long black and yellow skirt
- Flora Moseley
15-year-old, sunhat, blond hair, yellow top and red skirt
- Stanley George Hudswell
17-year-old, white hair, white T-shirt, gray pants, green eyes, brown shoes, his name on shirt in yellow.
- Seth "Whiff" Worsdell
- Davis Samson "Eagle" Hughes
- Vincent "Diesel 10" Warship
Middle-aged man, black hair, olive shirt with missing left sleeve, black pants, yellow eyes, black shoes, robot arm in place of left arm.
- Daniel "Diesel" Gronk
18-year-old, black hair, black T-shirt with red sleeves and two Ds on it, blue pants, brown eyes, black boots.
- Spencer Gresley
- Victor Works
- Scott Nigel Gresley
- Boby Cody "BoCo"" Metropolitan
- Arry and Bert Gronk
- Splatter and Dodge Gronk
- Paxton Rodney Gronk
- Sidney Gronk
- Neil Linsday
- Kyle "Bear" Hymek
- Dennis and Norman Ashford
- Bill and Ben Bagnall
- Lady Stone
15-year-old, blond hair, purple shirt with her name in yellow, yellow pants, blue eyes, pink shoes, pink hair braid, magic whistle.
- Annie and Clarabel Awdry/Billinton
12-year-old, brunette hair and red skirts
- Phillipa "Pip" and Emma Crewe
15-year-old, blue crop tops, yellow shorts and brunette hair
- Skarloey Jennings
- Rheneas Jennings
- Falcon "Sir Handel" Lodge
- Stuart "Peter Sam" Lodge
- Will "Rusty" Hornsby
- Duncan Barclay
- Mighty Mac Fairlie
- Freddie Hunslet
- Ivo Hugh Barclay
- Fred Hunslet
- Duke Lodge
- Bertram Boston