Thomas has the most variations of any character in the Thomas Wooden Railway, with more prototypes, changes, and variants than any other character in the range. The Talking Railway Series was a range of interactive engines and playsets. The engines have special gold magnets which, when they are at a destination, will prompt the Fat Controller to greet them. This range is discontinued. Early 2002 (new larger face, bigger smokebox, wide boiler, no ledge on rear, new details, shorter dome, funnel hole removed) Flying Scotsman's reintroduced model features the British Railways logo with "Mainland Railways" printed in place of the British Railways text. Features Winter Wonderland Thomas, Paint-Splattered Thomas and Breakfast Thomas; reissued in 2013 with the Breakfast Thomas being replaced with a Fish-Splattered Thomas.

Some items were bundled with US DVDs and VHS tapes. Some were only available in these bundles, such as the Honey Barrel Car. Bertram's original model depicts him in his proposed tank engine form, with a completely new design. In his TV series appearance, he uses Duke's model with Smudger's face. When he was reintroduced in 2016, he was given a tender, but retained his bunker. A total of fifteen characters exclusively from the Railway Series have been released in the Wooden Railway range. However, before Mike was introduced to the television series, a total of sixteen characters were released. Every child's imagination has stories to tell – and this cheeky steam engine is the perfect helper. Children create the stories, Thomas just delivers inspiration. Changes Oliver appears in the Boulder Mountain Set despite not being featured in the episode it was based on: Rusty and the Boulder.

Thomas & Friends Fisher-Price Wooden Railway, Percy Engine, Push-Along Toy Train

Features Soap-Sud covered Thomas with red funnel, soap suds covered Percy, bubble liquid car and hay covered Sir Topham Hatt's car. Fergus' reintroduced model has entirely white wheels despite his original model having the correct red wheels with a white rim. Initially released with Bertram and the Scrap Cars; later reissued individually in 2012 and 2016 for limited release.

The second known prototype of Thomas seen features six red HEROS wheels, no coal bunker details, and a face borrowed from Thomas's ERTL die-cast vehicle. Hank's model does not have a front coupler like other Wooden Railway engines and his television series appearance. Interestingly, Connor and Caitlin's wooden models have front couplers, while their front couplers are concealed in the TV series. The most famous of all the vehicles on the Island of Sodor, Thomas the Tank Engine is considered by all to be a "really useful engine". He is a cheeky, fussy little engine who is always eager to help. 2018 box description

Thomas Trains & Cranes Super Tower

Features two Thomas’; one with a gold smokebox and wheels and one as Wilbert Awdry initially made him. The reintroduced models of Bill and Ben comprises of Bill in yellow and Ben in blue, even though in the episode with which this release coincides, Bill was the first of the two to be repainted blue and Ben was only repainted blue while Bill was also blue. Kevin's original 2009 model had red wheels instead of yellow. The prototype for his 2009 model was also colored green. Features Skarloey with Gravel Cars; Gravel Cars are repaints of the Boulder Cars from Rheneas and the Boulder Cars.