Toad worked with Oliver on the Great Western Railway before being threatened with the prospect of scrapping. Oliver, Toad and an autocoach named Isabel ran away for the greener pastures of the North Western Railway, but Oliver ran out of coal en route. Luckily, they were rescued by Douglas and brought back to Sodor and were now owned by Sir Topham Hatt. In the Railway Series, Toad asked to be Douglas' brake van as a show of thanks. In the television series, Toad remains as Oliver's brake van.
When S.C. Ruffey began to start a trend of disrespecting the engines, Toad had the idea for Oliver to show him and his lieutenants the error of their ways. This turned out better than expected, for Oliver pulled S.C. Ruffey apart and won back the respect of the Troublesome Trucks.
In the television series, Toad was tired of always going backwards and wanted to be a leader for a change. The trucks decided to teach Toad to be careful what he wishes for by breaking away from Oliver on Gordon's Hill and as a result, he crashed into some level crossing gates, narrowly avoided Gordon and James and stopped by taking a plunge into a muddy pond. Afterwards, Toad decided that always going backwards was not so bad after all.
While Gator was on Sodor, he once took some of Oliver's trucks with Toad, who kept insisting that Gator should stop and relight his lamp. After being briefly taken off the train after forcing them to stop with his brakes, Toad had the "bright" idea of giving Gator one of his lamps to replace his broken one. This idea worked, and Gator thanked Toad once they had finished their journey.
By Toad's Adventure, Toad had become bored of repeatedly hearing the story of Oliver's escape, and longed for an adventure story of his own to tell. His wish was granted when he went to work with James, who ran much too fast and hit a fallen branch on Gordon's Hill, uncoupling his trucks. Toad managed to stop the trucks, and prevented a crash with Thomas and Percy. When he returned to the Yard, he told a disbelieving Oliver all about it.
Toad eventually began to sing during his journeys with Oliver, which the Western engine liked at first, but quickly got fed up of listening. Later, as they were passing Bluff's Cove, Toad spotted a whale stranded on the beach and tried to tell Oliver, but Oliver thought Toad was joking. But later that day when the two passed the same area again, Oliver saw the whale and apologised to Toad. They informed the Sodor Search and Rescue Centre, but after a few attempts at moving the whale proved unsuccessful, Toad had the idea of using a flatbed to transport the whale to Brendam, where Cranky gently placed the whale back into the water. Now whenever Toad passes through Bluffs Cove, he remembers his friend, and sings about him.
In Sodor's Legend of the Lost Treasure, he, along with Oliver, helped to build the new Harwick Branch Line and attended the line's opening.
In The Great Race, Toad and Oliver they wanted to get in The Great Railway Show, But they were not chosen.
Toad is a polite, gentlemanly brake van. He is also somewhat imaginative and a bit of an optimist. Toad minds his manners well and always quick to refer to the engines as "Mr.", "Miss", or "Sir". He escaped from scrap with Oliver, with some help from Douglas. Toad is very loyal, keeps Oliver's trucks in order, and has his best interests at heart. He has a cunning streak within him should the trucks cause any particular bother and does like fun when it comes his way, but he is typically calm, obedient, and content in his work.
Toad is based on a Great Western Railway 16-ton brake van. Early vans were just 10 or 16 tons weight, but this gradually increased to 20 and 25 tons.
Toad is painted grey with "GW 56831" written on his side in white. Before being repaired in Enterprising Engines, and in an illustration portraying him before Escape from the subsequent book, Toad was painted brown. In the Railway Series, his face is the same colour as his bodywork, but in the television series he has a light grey face.
The Railway Series
- Enterprising Engines - Escape (does not speak) and Little Western (does not speak)
- Oliver the Western Engine - Resource and Sagacity (does not speak) and Toad Stands By
- 1976 - Famous Engines
- 1987 - The Island of Sodor: Its People, History and Railways (mentioned)
- 1996 - Thomas the Tank Engine: The Complete Collection
- 2005 - Sodor: Reading Between the Lines (mentioned)
Thomas & Friends
- Series 3 - Escape (does not speak) and Oliver Owns Up (cameo)
- Series 4 - Toad Stands By and Mind that Bike (cameo)
- Series 5 - Gordon and the Gremlin (cameo), Oliver's Find and Busy Going Backwards
- Series 6 - James and the Red Balloon (faceless; deleted scene cameo)
- Series 7 - Emily's New Coaches (cameo), James and the Queen of Sodor (stock footage cameo) and Snow Engine
- Series 8 - Thomas and the Circus (faceless cameo)
- Series 12 - Gordon Takes a Shortcut
- Series 18 - Signals Crossed (cameo), Toad's Adventure, Duck in the Water (cameo), Spencer's VIP (cameo) and Toad's Bright Idea
- Series 19 - Toad and the Whale and The Little Engine Who Raced Ahead (cameo)
- Series 20 - Blown Away, The Way She Does It (cameo) and Skiff and the Mermaid
- Series 24 - The Great Little Railway Show (cameo)
He was to appear in the sixth series with Oliver, but was cut out for unknown reasons.
- 1992 - Thomas and the U.K. Trip (cameo)
- 2005 - Calling all Engines! (faceless; music video cameo)
- 2015 - Sodor's Legend of the Lost Treasure
- 2016 - The Great Race (song; cameo)
- 2017 - Journey Beyond Sodor (cameo)
- Series 4 - Don't Judge a Book By its Cover and The Island Song
- Series 5 - Accidents Will Happen and Come for the Ride
- Series 6 - Little Engines, Down by the Docks and Boo! Boo! Choo-Choo
- Series 7 - Troublesome Trucks and The Whistle Song
- Series 8 - Emily, Surprises
- Calling All Engines! - Busy (faceless)
- Series 9 - Party Time (faceless)
- Tale of the Brave - Let's Be Brave
- Thomas' YouTube World Tour - Down by the Docks, It's Great to be an Engine, The Island Song and Rules and Regulations
- Series 19 - Engine Roll Call
- Sodor's Legend of the Lost Treasure - We Make a Team Together (cameo)
- Series 20 - James the Really Splendid Engine and Accidents Will Happen
- The Great Race - Will You Won't You (cameo) and Be Who You Are, and Go Far (cameo)
- Journey Beyond Sodor - I Want to Go Home (cameo)
- Series 21 - Set Friendship in Motion, Doing it Right and Little Engines
- Series 22 - Engine Roll Call
- Joe Mills (UK/US; eighteenth series onwards)
- Yūsuke Numata (Japan; fourth-seventh series)
- Kunihiro Kawamoto (Japan; eighteenth series onwards)
- Paweł Ciołkosz (Poland; eighteenth series onwards)
- Achim Schülke (Germany)
- TBA (Israel; eighteenth series onwards, excluding Sodor's Legend of the Lost Treasure)
- Nir Ron (Israel; Sodor's Legend of the Lost Treasure only)
- Fabrice Trojani (France and French speaking Canada; eighteenth series onwards)
- Bardo Miranda (Latin America; eighteenth series onwards)
- Reinder van der Naalt (The Netherlands)
- Armando Bungău (Romania)
- Denis Bespalyy (Russia; eighteenth series onwards, excluding Sodor's Legend of the Lost Treasure)
- TBA (Russia; Sodor's Legned of the Lost Treasure only)
- One of Toad's models is on display at Drayton Manor.
- Toad's ERTL toy incorrectly states that his number is "5683".
- Toad's name originates from a nickname ("toad") given to brake vans on the Great Western Railway. Toad is also based upon a brake van that carries the same number. It can also be considered a subtle pun: a brake van is 'towed' everywhere it goes.
- When Toad returned in the eighteenth series, he had some modifications. These include:
- Grey buffers.
- Grey handrails as opposed to his original white handrails.
- His glass windows were removed, replaced with open windows.
- Only one side has the Great Western insignia, number, and tonnage.
- He is slightly longer than his model form.
- He is a lighter shade of grey.
- He is slightly taller than his model counterpart.
- Both Toad's physical and CGI models deviate a bit from their real-life counterpart: in real-life, Toad's basis has sandboxes near the handbrake, and also has a white interior with a desk, seat, etc. Toad lacks these features, both in model and in CGI forms.
- In Latin America, Toad gains an Argentine accent in Toad's Bright Idea.
- Toad is the first brake van in the TV series to have a name.