When Sir Topham Hatt found out that Spamcan and Bowler were being very troublesome engines by pushing Gordon into the sea at Brendam Docks and bumping Henry into the back of a shed so they can take the Express, he was very cross when Duck told him and spoke to them severely when they were caught!
Sir Topham Hatt had no choice but to send the troublemakers packing but in replacement, he needed two new engines and sent out to get them immediately.
The next day, the two engines arrived: one was a saddletank engine with red and yellow lining for his nameplate from the Dean Forest Railway and the other was a diesel shunter from the Arlesdale Railway with red and yellow lining for his nameplate as well. The two's names were Wilbert and Frank and they were the replacements after Spamcan and Bowler were sent away for being silly.
They decided to be shown around the railway to see how it was for theirselves. When Wilbert was filling up with water at the Watertower delivering gravel, he met Skarloey who was very nice to him and the two soon become friends.
However, the railway is a little different from his old railway, the Dean Forest Railway and becomes to feel a little sad because of missing his old railway. Skarloey tells him to cheer up and that this railway may be different, but you still can meet a lot of nice engines.
Frank, however is just the opposite and is very careless from being on the Arlesdale Railway so long and pulls trucks into Brendam Docks. Harvey gives him some advice to deal with trucks but Frank doesn't listen, he honks his horn and rushes away trying to be reckless.
Skarloey is talking to Wilbert about Henry's Forest to cheer him up when Frank comes to a t-switch, there are two diesel shunters just like Frank, but are painted with yellow and black stripes instead who refuse to move a cargo car blocking the tracks out of Frank's way. Frank, determined to be careless and get the delivery on time pushes an orange cargo car out of the way…
But what Frank doesn't realize is that the tracks weren't switched properly and the cargo car rolls straight up a hill. Then trouble starts, James is taking some passengers in a Knapford Express Coach when the cargo car goes right his way, Wilbert moves the cargo car out of the way quickly before James could bump into it and derail himself!
After this, Sir Topham Hatt is proud with Wilbert but Frank now wishes he hadn't been so careless and now knows never to mess with 'Arry and Bert again.
A few days after, Wilbert meets with Skarloey again when a bi-plane hovers in very lowly. Wilbert asks Skarloey about this strange bi-plane that has the habit to fly lowly and Skarloey tells him it's just Tigermoth, a red and yellow bi-plane that has that habit, and right off the bat: Wilbert goes to talk to Tigermoth one evening, but Tigermoth is very rude making him and Wilbert enemies. After the talk, him and Skarloey talk all about it.
But just when they're talking, Tigermoth flies in very lowly but without his pilot. Tigermoth realizes he can't stop and the air pushes him but without his pilot, it's hard to stop and Tigermoth has a crash land right on the ground!
When Sir Topham Hatt hears the news, he is very cross with Tigermoth and speaks severely to him about not flying with his pilot, Tigermoth can still fly but learns a lesson from this to always fly with his pilot from then on while Wilbert and Skarloey watch it all along…
In the fifth season, he meets Toby who is pulling some trucks but instead of helping, Toby crashes off the rails! Skarloey, however, sees everything and decides to play a trick on Wilbert for not helping poor Toby with the troublesome freight cars. The next day, Skarloey plays the trick into thinking Wilbert's a runaway and then Wilbert learns his lesson.
In the eleventh season, he tells the engines about Duck going to the Works all the time to get repairs and makes a joke to the engines about it that "it's just Duck's luck".
Wilbert is sensible and polite, and does his best to work well. He is also clever and inventive but a nature lover at heart for working on the Dean Forest Railway for many years…
Wilbert is based on the engine of the same name - a Hunslet WD 0-6-0ST - from the Dean Forest Railway in Gloucestershire, England.
Wilbert is painted navy blue with red lining and black wheels. He has red nameplates with gold writing.
- Season 1: Wilbert to the Rescue, Wilbert and Tigermoth and Wilbert, Frank, and the Milk
- Season 5: Wilbert Gets Pranked
- Season 7: Wilbert's Tragic Day
- Season 8: Frank and the Fib
- Season 9: Planes, Cranes, and Games
- Season 11: Just Duck's Luck and Holly Jolly Molly (cameo)