Mario's Duck is the fifth episode of the third season of RS Mr. Conductor the Conductor and Friends, and the fifty-seventh episode overall. It is a parody of the Thomas and Friends episode, Donald's Duck.
- Grandpa Dave (from Arthur) as Toby
- Spike (from My Little Pony: Friendship is Magic) as Duck
- Mario (from Mario) as Donald
- Mayor Adam West (from Family Guy) as Sir Topham Hatt
- Ten Cents (from TUGS) as Bertie (does not speak)
- RS Mr. Conductor (from Shining Time Station) as Thomas (cameo)
- Schemer (from Shining Time Station) as James (cameo)
- Bart (from The Simpsons) as Percy (cameo)
- Luigi (from Mario) as Douglas (cameo)
- Sunshine (from TUGS) as Trevor (cameo)
- Everyone else as Themselves
Narrator: "Spike the Dragon worked hard in the yard at the big station.
Sometimes he worked with flowers, sometimes he worked with goombas. But whatever the work, Spike got the job done without fuss.
One day, Spike was resting in the house when Mayor Adam West arrived."
Mayor Adam West: "Your work in the yard has been good. Would you like to have a route for your own?"
Spike: "Yes, please sir."
Narrator: "Replied Spike.
So Spike took charge of his own route. The responsibility delighted him.
The route runs along the coast by sandy beaches till it meets a port where big ships come in.
Spike enjoyed exploring every curve and corner of the line. Sea breezes swirled his smoke high into the air, and his scales glistened in the sunlight."
Spike: "This is just like being on holiday."
Narrator: "He puffed."
Spike's Driver: "Well, you know what they say."
Narrator: "Laughed his driver."
Spike's Driver: "A change is as good as a rest."
Narrator: "Soon Spike was busier than ever.
Mayor West was building a new station at the port and Spike pushed the goombas wherever they were needed.
Ten Cents looked after Spike's passengers, and the other TV Characters helped too, but the work took a long time.
Noise and dust filled the air."
Grandpa Dave: "Don't worry."
Narrator: "Whistled Grandpa Dave."
Grandpa Dave: "The station's nearly finished."
Spike: "And on time too."
Narrator: "Said Spike thankfully.
Spike felt his responsibility deeply and talked endlessly about it."
Spike: "You don't understand, Mario, how much Mayor West relies on me."
Mario: "Och aye."
Narrator: "Muttered Mario sleepily."
Spike: "I'm a dragon and I..."
Mario: "Quack, quack, quack!"
Mario: "Ye heard. Quack, quack ye go. Sounds like you'd an egg laid. Now wheesht and let a plumber sleep."
Spike: "Quack yourself!"
Narrator: "Said Spike indignantly.
Later he spoke to his driver."
Spike: "Mario says I quack as if I'd laid an egg."
Spike's Fireman: "Quack, do you?"
Narrator: "Pondered his fireman. He whispered something to Spike and his driver. They were going to play a joke on Mario and pay him back for teasing Spike.
The TV Characters were busy for the rest of the day and nothing more was said, not even a quack.
But when at last Mario was asleep, Spike's driver and fireman popped something into his pocket.
Next morning, when Mario stopped for water, he found that he had an unexpected passenger with him. A small white duckling popped out of his pocket."
Mario: "No doubt who's behind this."
Narrator: "Laughed Mario.
The duckling was tame. She shared the fireman's sandwiches, and rode on Mario. The other TV Characters enjoyed teasing Mario about her.
Presently, she grew tired of traveling and hopped off at a station, and there she stayed.
That night, Mario's driver and fireman got busy, and in the morning when Spike's crew arrived, they laughed and laughed."
Spike's Driver: "Look, Spike! Look what's behind you. It's a nest box with an egg in it!"
Narrator: "Mario opened a sleepy eye."
Mario: "Well, well, well. You must have laid it in the night, Spike. All unbeknownst."
Narrator: "Then Spike laughed too."
Spike: "You win, Mario. It'd take a clever TV Character to get the better of you."
Narrator: "There's a pond near the duckling's station. Here she often swims and welcomes the TV Characters as they pass by. The stationmaster calls her Dilly, but to everyone else, she is always Mario's Duck."