Percy

"That's the one. If I choose you, will you work hard?" "Oh, sir! Yes, sir!" "That's a good engine. I'll call you Percy. "Yes, sir! Thank you, sir!"

- Sir Topham Hatt and Percy, Trouble in the Shed, first season

 CGI Series= |-|Model Series= |-|Railway Series=  Percy   Percy is a cheeky green saddletank engine who was brought to Sodor to help run the railway during the big engines' strike. His favourite job is to deliver the Mail Train. He works on Thomas' Branch Line as a goods engine.
 * Number: 6
 * Designer: Avonside Engine Company
 * Builder: Avonside Engine Company
 * Built: circa 1900
 * Configuration: 0-4-0ST
 * Arrived on Sodor: Sometime between 1925 and 1935

Bio
Percy was most likely built by Avonside sometime around the 1900's and had gone through a subsequent rebuild in the years preceding his second-hand sale to the North Western Railway. He is said to have been found wearing Hunslet parts, according to workers at Crovan's Gate.

When Gordon, James and Henry went on strike in protest of the extra work they had to do since Thomas left to run his branch line, the Fat Controller decided that the railway needed another tank engine. Going to the engine workshop, the Fat Controller saw a green saddletank and when the engine confirmed he was willing to work hard, the Fat Controller bought him and named him Percy. Bringing him back to Sodor, Percy was charged with running the branch line while Thomas ran the Main Line with Edward and was allowed to stay after the big engines surrendered and returned to work. At first, Percy liked to annoy the big engines. Percy was later waiting at Tidmouth, but forgot to whistle to the signalman, and thus was startled when Gordon came running towards him with the express. Gordon managed to stop in time, but Percy was so frightened, he ran away and ended up stuck in a sandbank. He was rescued by Gordon and took up the duty of station pilot at Tidmouth.

Percy was still a cheeky engine and often liked to play jokes on Gordon and James, but one day the other engines got their revenge when Percy failed to recognise a "backing signal". After this, Percy was subject to bullying from the big engines until Duck arrived and helped Percy to put the big engines in their place, although Percy still received a reprimand from the Fat Controller for it.

With Duck's arrival, Percy was sent to Thomas' Branch Line to help build Knapford Harbour and has stayed there ever since as a goods engine. He met a self-centred helicopter named Harold who said that railways were "slow and out-of-date", so he decided, to race him, of which he won. When Percy had to take the Sunday School children home, he came across a flooded paddock which swashed away his fire. Thankfully, with a little help from Harold, who had dropped supplies of hot drinks for his crew and the passengers, he was able to get the children home.

Despite being really useful, Percy was prone to having accidents, sometimes for acting naughty, and others for carelessness. He was naughty when he asked the trucks to push him past a danger notice, only to end up in the water until he could be lifted out and taken to the works by Henry. When a diesel railcar named Daisy came to look after Thomas' Branch Line, she constantly kept leaving behind the milk van every time Percy shunted it for her. Fed up with taking the milk for her, Percy offered to take Toby's trucks for him while he took the milk. However, the trucks were unfamiliar with Percy, and when he ordered them about, they decided to seek revenge by pushing him onto a line of stone trucks.

In Tale of the Brave, Thomas tells Percy about some mysterious footprints that he saw at the China Clay Pits. Percy convinces himself that it must be footprints of a monster that is roaming Sodor. Continuing to be anxious for a few days, he causes lots of confusion and delay such as: mistakenly referring to Gator, the new engine as the monster, failing to delivery his mail on-time and running off before The Fat Controller finished talking to him. After talking with his new friend Gator, he understands what being brave is like and later uses this courage to save James from a huge landslide. He later learns that the monster was really a dinosaur a long, long time ago, which had now become a fossil. He also understood that the footprints Thomas saw, were also only fossils left from the dinosaur. Percy later says goodbye to Gator, who has to return to the mainland, but the two friends are certain they will meet again someday.

In the eighteenth season, Percy was starting to miss Gator and tries to forget him by working hard and not think about him. When he had to deliver trucks full of precious sculptures and paintings for a special exhibition, he didn't stop to be coupled and the Troublesome Trucks are rolling to the Old Mine. He thinks about Gator and his advice of how to be brave. Percy goes into the mine and rescues the trucks. Percy reunited with Gator on Christmas.

In the nineteenth season, he was to take the Mayor of Sodor to the Search and Rescue Centre to present a new alarm bell to celebrate their one thousandth rescue. Diesel overheard Percy talking about it at the Docks and he played a trick on him, sending Percy to the Old Quarry which resulted him ending up on a badly flooded railway line and after Diesel unsuccessfully attempted to pull him out of the flood, he too also ended up getting stuck in the water after it badly damaged his generator. The rescue of Diesel and Percy marked the Sodor Search and Rescue Centre Crew's one thousand and first rescue.

In The Great Race, Percy takes Thomas's place in The Shunting Competition of The Great Railway Show after Thomas has an accident and is left on Sodor. However, Thomas manages to make it to The Mainland after all and Percy drops out of the competition so his best friend can compete.

Persona
Percy is a bit silly but a sweet, cute, funny, pleasant and kind little green tank engine. Sometimes he acts cheeky, but always learns his lesson. As the television series has progressed, Percy has been dumbed-down in order to teach viewers difficult words: he would say "dingy-fried" where anyone else would say "dignified",or make "Demonstration" into " Dimer-station". He is also shown to make silly mistakes, but then fix them upon realising what he has done before further damage is caused.

Percy is incredibly accident-prone and has many accidents, sometimes due to his own silliness or his tricks backfiring. He holds the dubious record of the most accidents in one season - five, in the second season - crashing into some buffers, falling into the sea, being pushed onto a brakevan, colliding with a cart, and being hit by a falling crate of treacle. So far, his silliest accident yet was in the sixth season, when he slipped on oily rails, crashed through the chocolate factory and emerged covered in chocolate. Despite this, he always tries to do his best, learn from his mistakes and get his jobs done, a loyalty which Sir Topham Hatt has praised him for on several occasions.

Although their friendship has been turbulent at times, Thomas is generally portrayed as Percy's best friend, he is also good friends with Toby as well.

Since the second season, Percy has had a small rivalry with Harold, stemming from their race. However, they are always willing to help each other when in trouble.

He also had held a grudge from the big engines about their tricking him into misinterpreting a signal, but silenced this with some help from Duck. This shows that, when nonsense goes too far, Percy will not stand for it and seek help to settle the matter for good, even if he faces a reprimanding from Sir Topham Hatt for it.

Basis
Percy is primarily based on a Avonside 0-4-0ST with Hunslet underframes and valve gear, a smokebox protruding from his saddletank, external cylinders and motion, and sandboxes underneath the tanks on his footplate.

Modifications made to Percy's shape include the angled smokebox supports and possibly a coal bunker.

A similar looking engine painted red, lived with Percy at the Workshop where he used to live before arriving on Sodor, in the My Thomas Story Library book, The Fat Controller.

Livery
Percy is painted NWR green with NWR red-and-yellow lining and a "6" painted on his bunker sides in yellow with red lining.

In the Railway Series, he carries two builder's plates, one on either side of his cab.

Green Caterpillar
The Reverend W. Awdry and C. Reginald Dalby did not get along very well. Awdry considered Dalby's drawings "toy-like"; this relationship was worsened by the creation of Percy, who was depicted as an Avonside 0-4-0ST/GWR 1340 Trojan with a bunker.

When Percy the Small Engine was published, Awdry wrote to Dalby, criticising his illustrations and claiming Percy resembled "a green caterpillar with red stripes". This was too much for Dalby and he promptly resigned. However, the insult was not forgotten: Thomas called Percy "a green caterpillar with red stripes" in Tramway Engines as well as the televised episode Woolly Bear.

Arrival
It is debated as to what year Percy arrived. The Island of Sodor: Its People, History and Railways states that Percy was made the station pilot at Tidmouth in 1949, somewhat implying that he arrived on Sodor in that year. However, Henry is said to have been rebuilt in 1935 and Percy makes several appearances in the presence of the pre-rebuild Henry, suggesting that either Henry was rebuilt later on or that Percy arrived before 1935. A post on SiF states that Christopher Awdry affirmed the arrival date in The Island of Sodor: Its People, History and Railways to be incorrect and that Percy came to Sodor before 1935.

Appearances
{{Scroll box|

Railway Series

 * Troublesome Engines
 * Henry the Green Engine
 * Toby the Tram Engine
 * Gordon the Big Engine
 * Edward the Blue Engine (not seen)
 * Percy the Small Engine
 * The Eight Famous Engines
 * The Twin Engines
 * Branch Line Engines
 * Stepney the "Bluebell" Engine
 * Tramway Engines
 * Really Useful Engines
 * More About Thomas the Tank Engine
 * Toby, Trucks and Trouble
 * Thomas and the Twins (does not speak)
 * Thomas and the Great Railway Show
 * Thomas Comes Home
 * Wilbert the Forest Engine
 * Thomas and the Fat Controller's Engines
 * Thomas and Victoria
 * Thomas and his Friends

Television series

 * Season 1 - Trouble in the Shed, Percy Runs Away, Whistles and Sneezes, Dirty Objects, Off the Rails, and Thomas' Christmas Party
 * Season 2 - Thomas, Percy and the Coal, Cows (does not speak), Saved from Scrap (cameo), Old Iron, Percy and the Signal, Duck Takes Charge, Percy and Harold, The Runaway (does not speak), Percy Takes the Plunge, Pop Goes the Diesel (cameo), A Close Shave (cameo), The Deputation, Thomas Comes to Breakfast, Daisy, Percy's Predicament, Ghost Train, Woolly Bear, and Thomas and the Missing Christmas Tree (does not speak)
 * Season 3 - A Scarf for Percy, Percy's Promise, Time for Trouble, Gordon and the Famous Visitor, Donald's Duck (cameo), Thomas Gets Bumped, Thomas, Percy and the Dragon, Diesel Does it Again, The Trouble with Mud (cameo), No Joke for James, Thomas, Percy and the Post Train, Trust Thomas (does not speak), Toby's Tightrope, All at Sea, Tender Engines (cameo), Escape (cameo), Oliver Owns Up, Bulgy (cameo), Percy, James and the Fruitful Day, and Thomas and Percy's Christmas Adventure
 * Season 4 - Granpuff, Sleeping Beauty, Bulldog, Four Little Engines (cameo), A Bad Day for Sir Handel (cameo), Trucks! (cameo), Rock 'n' Roll (cameo), Steam Roller (cameo), Passengers and Polish (cameo), Gallant Old Engine (cameo), Rusty to the Rescue (does not speak), Thomas and Stepney, Train Stops Play, Bowled Out, Henry and the Elephant, Toad Stands By, Bulls Eyes (cameo), Thomas and the Special Letter, Paint Pots and Queens, Fish (cameo), Special Attraction, and Mind that Bike
 * Season 5 - Cranky Bugs, Horrid Lorry, A Better View for Gordon, Lady Hatt's Birthday Party, James and the Trouble with Trees, Gordon and the Gremlin, Bye George!, Baa!, Put Upon Percy, Toby and the Flood, Double Teething Troubles, Thomas, Percy and Old Slowcoach, Thomas and the Rumours, Oliver's Find (mentioned), Happy Ever After, Sir Topham Hatt's Holiday (does not speak), A Surprise for Percy, Make Someone Happy, Busy Going Backwards (cameo), Snow, and Rusty and the Boulder
 * Season 6 - No Sleep for Cranky, Salty's Secret, Harvey to the Rescue, A Bad Day for Harold the Helicopter, The Fogman, It's Only Snow (cameo), The World's Strongest Engine, Scaredy Engines, Percy and the Haunted Mine, Middle Engine, James and the Red Balloon, Jack Frost, Gordon Takes a Tumble, Percy's Chocolate Crunch, Thomas, Percy and the Squeak, Thomas the Jet Engine, and Edward the Very Useful Engine
 * Season 7 - Emily's New Coaches (does not speak), Percy Gets it Right, Bill, Ben and Fergus (cameo), Edward's Brass Band (cameo), What's the Matter with Henry?, James and the Queen of Sodor, The Spotless Record, Toby's Windmill (main role replaced with Toby), Bad Day at Castle Loch, Salty's Stormy Tale, Something Fishy (does not speak), Peace and Quiet (cameo), Fergus Breaks the Rules (cameo), Bulgy Rides Again (cameo), Harold and the Flying Horse, Best Dressed Engine, Gordon and Spencer (cameo), Not So Hasty Puddings (cameo), and Three Cheers for Thomas
 * Season 8 - Thomas and the Tuba, Percy's New Whistle, Thomas to the Rescue (does not speak), Henry and the Wishing Tree (cameo), James Gets a New Coat, Thomas Saves the Day (cameo), Percy's Big Mistake, Thomas, Emily and the Snowplough (cameo), Don't Tell Thomas, Emily's New Route (deleted scene), Gordon Takes Charge, Spic and Span, Edward the Great, Thomas and the Circus, Thomas Gets it Right (cameo), As Good as Gordon (cameo), Halloween, You Can Do it, Toby!, Chickens to School (does not speak), Too Hot for Thomas, James Goes Too Far, and Percy and the Magic Carpet
 * Season 9 - Percy and the Oil Painting, Thomas and the Rainbow, Molly's Special Special, Thomas' Milkshake Muddle (cameo), Thomas and the Toy Shop (cameo), Respect for Gordon, Thomas and the Birthday Picnic, Thomas and the New Engine, Toby Feels Left Out, Thomas Tries His Best (does not speak), Thomas and the Statue, Emily Knows Best, Thomas' Day Off, Thomas and the Golden Eagle, and Keeping up with James (cameo)
 * Season 10 - Thomas and the Jet Plane, Percy and the Funfair, The Green Controller, Toby's Afternoon Off (cameo), It's Good to be Gordon (cameo), Toby's New Shed, Edward Strikes Out, Thomas and the Shooting Star, Big Strong Henry, Sticky Toffee Thomas, Thomas' Frosty Friend, Emily and the Special Coaches (cameo), Thomas and the Colours (cameo), Thomas and the Treasure (cameo), and James the Second Best
 * Season 11 - Thomas and the Storyteller, Dream On (does not speak), Dirty Work, Gordon and the Engineer (cameo), Thomas and the Spaceship, Henry's Lucky Day (cameo), Thomas and the Lighthouse (does not speak), Thomas and the Big Bang (does not speak), Thomas Sets Sail (does not speak), Don't be Silly, Billy, Edward and the Mail, Hide and Peep, Toby's Triumph, Thomas and the Runaway Car, Thomas in Trouble, and Percy and the Left Luggage
 * Season 12 - Thomas and the Billboard (does not speak), Henry Gets it Wrong, Heave Ho Thomas!, Saved You! (speaks only in Japanese dub), Tram Trouble (cameo), Percy and the Bandstand, and Best Friends
 * Season 13 - Creaky Cranky (cameo), The Lion of Sodor, Tickled Pink, Double Trouble (cameo), The Early Bird, Play Time, Thomas and the Pigs, Percy's Parcel, Toby's New Whistle, Thomas and the Runaway Kite, Steamy Sodor, The Biggest Present of All, Snow Tracks, Henry's Good Deeds, Buzzy Bees (cameo), and Hiro Helps Out
 * Season 14 - Thomas' Tall Friend, James in the Dark (mentioned), Pingy Pongy Pick Up, Charlie and Eddie (cameo), Toby and the Whistling Woods (cameo), Henry's Health and Safety, Diesel's Special Delivery (cameo), Victor Says Yes, Thomas in Charge, Merry Winter Wish, Being Percy, Henry's Magic Box, Thomas and the Snowman Party, Thomas' Crazy Day, Thomas and Scruff, and Merry Misty Island
 * Season 15 - Percy's New Friends, Edward the Hero, James to the Rescue, Happy Hiro, Up, Up and Away!, Henry's Happy Coal (incorrectly mentioned in Norwegian version), Surprise, Surprise, Spencer the Grand, Stop that Bus! (cameo), Big Belle (cameo), Kevin the Steamie, Percy the Snowman, Tree Trouble, and Fiery Flynn (cameo)
 * Season 16 - Ol' Wheezy Wobbles (does not speak), Express Coming Through (does not speak), Percy and the Monster of Brendam, Ho Ho Snowman (cameo), Flash Bang Wallop!, Bust My Buffers! (cameo), Percy and the Calliope, Thomas and the Sounds of Sodor, Salty's Surprise (cameo), Sodor Surprise Day (cameo), Emily's Winter Party Special (cameo), Muddy Matters, Whiff's Wish, and Welcome Stafford (cameo)
 * Season 17 - Scruff's Makeover, Wayward Winston, Gordon Runs Dry, Calm Down Caitlin, Steamie Stafford, Not Now, Charlie!, The Phantom Express, Percy's Lucky Day, Too Many Fire Engines (cameo), No Snow for Thomas, The Missing Christmas Decorations, The Frozen Turntable, Away From the Sea (cameo), The Smelly Kipper, and Thomas' Shortcut
 * Season 18 - Old Reliable Edward, Flatbeds of Fear (cameo), Disappearing Diesels, Signals Crossed (cameo), Toad's Adventure, Duck in the Water (cameo), Duck and the Slip Coaches, Marion and the Pipe, Missing Gator, Spencer's VIP, Toad's Bright Idea, Long Lost Friend, Last Train for Christmas, Duncan the Humbug (cameo), The Perfect Gift, Timothy and the Rainbow Truck (cameo), and Samson at Your Service
 * Season 19 - Who's Geoffrey?, The Truth About Toby, Lost Property (cameo), A Cranky Christmas (cameo), Toad and the Whale (cameo), Very Important Sheep, Helping Hiro, Snow Place Like Home, The Beast of Sodor, A Cranky Christmas (cameo), Diesel's Ghostly Christmas (does not speak), Two Wheels Good (cameo), Reds vs. Blues, Best Engine Ever, The Little Engine Who Raced Ahead, Philip to the Rescue, Wild Water Rescue, The Other Side of the Mountain, Goodbye Fat Controller and Thomas the Babysitter (cameo)
 * Season 20 - Sidney Sings, Toby's New Friend (cameo), Henry Gets the Express (cameo), Diesel and the Ducklings, Bradford the Brake Van, Pouty James, Letters to Santa, The Christmas Coffeepot, Engine of the Future, Three Steam Engines Gruff and Henry in the Dark
 * Jack and the Sodor Construction Company - Percy's Scary Tale, A Happy Day for Percy, Thomas and the Moles (cameo), and Percy Helps Out
 * Other - Thomas & Friends in 4-D: Bubbling Boilers (cameo)

Specials:
 * Thomas and the U.K. Trip
 * Thomas and the Magic Railroad
 * Calling All Engines!
 * The Great Discovery
 * Hero of the Rails
 * Misty Island Rescue
 * Day of the Diesels
 * Blue Mountain Mystery
 * King of the Railway
 * Tale of the Brave
 * The Adventure Begins (indirectly mentioned)
 * Sodor's Legend of the Lost Treasure
 * The Great Race

Learning Segments:

Models

 * Season 8 - Being on Time, Truck Trouble, Helping One Another (cameo) & What Makes Percy Feel Better?
 * Season 9 - Same Colour, Getting to Bluff's Cove (speaking sole), Percy in the Dark, Knowing What To Do & What Goes Where? (cameo)
 * Season 10 - Who Will Percy See?, Percy's Story (speaking role) & Toby's Favourite Place (cameo)
 * Calling All Engines! - Which Diesel Engine with Which Steam Engine?

Animation

 * Season 8 - Guess the Engine - Percy, Percy Pulls Out of the Station, Surprise Destinations, Thomas and Percy Plays Hide and Seek & Sharing Trucks
 * Season 9 - Getting to the Washdown (speaking role), Which Engine for Which Job?
 * Season 10 - How are Thomas and Percy Different?, What's Found Where?, Which Engine Should go to Which Building?, Clever Percy, Dot to Dot - Percy, Percy's Treasure & Happy or Sad
 * The Great Discovery - Tough Trucks
 * Unknown - Who's Going Where?

Magazine stories

 * 1987 - Thomas' Christmas Party
 * 1988 - Trouble in the Shed, Percy Runs Away, Whistles and Sneezes, James and the Tar Wagons, Percy and the Signal, Old Iron (does not speak), Thomas, Percy and the Coal, Percy and Harold, The Runaway (mentioned), Ghost Train, Woolly Bear, Percy's Night Out, Henry's New Driver (mentioned), Percy Gets Jammed, The Train Spotters (mentioned), Duck Takes Charge, Cows, and Percy's Predicament
 * 1989 - Rumours and Speculation, Gordon's Express, The Escape, The Party (does not speak), Thomas and the Whistle, One Good Turn (cameo), A New Driver and The Missing Holly! (mentioned)
 * 1990 - Trouble in the Tunnel, One Bump Too Many, The Backlog (does not speak), Percy and the Dragon, and Go Easy
 * 1991 - Gordon Forgets (mentioned) and Daisy in Distress (cameo)
 * 1992 - A Lost Load! (mentioned)
 * 1993 - Percy and the Parrot!, The Visitor, Trevor to the Rescue! (cameo), Roof Repairs!, Thomas and the Toboggan! (cameo), The Viaduct!, Truck Trouble!, First with the Food! (mentioned), and Too Fast!
 * 1994 - A Special Treat! (cameo), Thomas and Trevor (not seen), The Hot Soup Special!, Runaway Trucks, and Well Caught! (mentioned)
 * 1995 - Keeping Clean! (cameo), Night Lights (does not speak), The Engine Parade!, and Percy has Problems
 * 1996 - Percy's Squeak!, Henry's Hoax, The Little Line, The New Track, Gordon's Spots! (does not speak), Important Passengers!, Edward and the River Rose! (mentioned), Percy Saves the Day, Thomas and the Tunnel!, Thomas Takes a Ride!, Truck Trouble!, Grumpy George, The Brown Bear, Oliver's Mistake, and Too Tired! (does not speak)
 * 1997 - Percy's Goods Train, Percy's Puzzling Trip!, Clowning Around!, Henry's Busy Day (does not speak), Henry, Percy, Gordon, Percy's Surprise, The Flower Train, and Percy's Promise
 * 1998 - The Beached Whale!, Smokey Joe! (mentioned), The Snow Engine!, Thomas, Percy and the Dragon!, Gordon's Express, Look Alike, Runaway Percy!, Billy's Bones! (cameo), Donald's Duck! (cameo), The Exhibition! (cameo), The Easter Cake! (cameo), James' Hotel!, Christmas Crisis (does not speak), and Copycat!
 * 2000 - Shivers in the Sheds, Rude James, and Back to Front!
 * 2001 - Too Fast, A Song for Caroline (cameo), Down at the Docks, Choc-o-BoCo!, Percy's Fire!, Playful Pony, Pumpkin Pie!, A Special Story About Snow! and Dusty Diesel (cameo)
 * 2002 - Whistling!, The Winning Shot, Travelling Tables! (cameo), Dusty Diesel (cameo), Tunnel Trap!, The Flower Festival (does not speak), Ben at the Station (mentioned), Daisy and the Troublesome Trucks (does not speak), Percy, The Fat Controller's Diesels! (cameo) and The Blue Engine Club (cameo)
 * 2003 - To the Harbour, Build or Bust!, The Most Beautiful Station, Feeling Fine (cameo), Broken Bridges (cameo), Bridges, A Foggy Friend, Harold's Bad Day, Harvey to the Rescue!, Shady Business!, Really Fast Food!, Percy's Party!, Percy the Post! and Dirty Work
 * 2004 - All Puffed Out, Crash Splash!, Rocket Power, Pony Pick-Up!, Percy the Pirate, Percy gets Wet!, Night Lights, James and the Red Balloon, Scary Jack Frost, James' New Coat, More Mischief!, Going for a Swim!, Crash Splash!, Percy to the Rescue, Snake's Alive!, Toby's Troubles!, Broken Biscuits, Dirty Percy!, Dockers' Dinner, Harold's Bad Day, Edward to the Rescue!, Peep! Peep! Moo! Moo!, Steam Power, Rock Shock! (cameo), The Haunted Mine, It's Only Snow! (cameo) and Metal Men
 * 2005 - Perfect Percy, Super Slider, Percy and the Magic Carpet, Gordon's Snow Show, Thomas' Hallowe'en, Percy and the Painting, Spick and Span, Model Engines, Cheers for Thomas (does not speak), Percy and the Big Mistake, Trying Time, Chickens to School, Glider Rider and Naughty or Nice?
 * 2006 - Emily Knows Best, Percy's New Whistle, and Station Sounds
 * 2007 - Everyone's Friend (does not speak), The Right Shape, Sleepy Sam, Emily's Present (cameo), and Canal Cruise
 * 2008 - Percy's Post!, Edward's Mail, Snow Trouble!, Track Race, Wonky Whistle!, Thomas and the Lighthouse!, Percy and the Left Luggage, The Ice Train!, Claypit Clowns, Hide n' Peep!, and Toby's Triumph (cameo)
 * 2009 - Night Light Train (cameo)
 * 2010 - Percy's Parcel, Hiro Helps Out (does not speak), The Best Present of All, Early Bird, Pulling the Post (cameo), Misty Island Rescue (does not speak), Percy Ploughs In!, Snow Tracks, Creepy Causeway, Percy's Poles, Disgusted Diesels, Thomas and the Rainbow!, and Percy and the Magic Carpet
 * 2011 - Being Percy, Saved Again, Rumble Rescue (cameo), Steam on Stamps (cameo), Misty Island Rescue (cameo), Ready, Jet Set, Go! (cameo), Musical Trucks (cameo), Percy's Rainbow, Henry's Health and Safety (does not speak), Victor Says Yes (does not speak), Thomas' Crazy Day (does not speak), Thomas and Scruff (does not speak), The Flying Teapot, Out of Control, Rain or Shine, Little and Light, Hiro Helps Out (does not speak), The Runaway Kite (does not speak), Horrible Hiccups, Heave Ho Thomas! (does not speak), Winter Wish, Thomas' Tall Friend (does not speak), Caroline's Christmas (cameo), Snow Tracks (cameo), A Home for Salty (cameo), Mirror, Mirror, and Pingy Pongy Pick-up (cameo)
 * 2012 - Percy the Post Train, Percy's New Friends, Paint for Percy, Thomas and the Pigs, Early Bird, Bubbling Boiler, The Railway Show, Making Hiro Happy (does not speak), The Fat Controller's Bedtime Story (Issue 643) (does not speak), Edward's Big Rescue, Thomas' Tall Friend (mentioned), Team Spirit Time!, Ol' Wheezy Wobbles (mentioned), The Fat Controller's Bedtime Story (Issue 646), Up, Up and Away!, A Whoosh of Water!, Percy the Snowman, Thomas and the Sound of Sodor (does not speak), and Prize Guys (cameo)
 * 2013 - Horrible Hiccups, Strange Sounds, Surprise, Surprise!, Flash! Crash! Wallop! (does not speak), Whiff's Wish (does not speak), Terrible Twins (speaks in speech bubbles only), The Fat Controller's Bedtime Story (Issue 661), Early Bird!, Being Percy (does not speak), Play Time (mentioned in speech bubble only), Caught on Camera, Steamie Stafford, Coal and Treacle, Thomas the Spotter, Brilliant Ben, Ready, Jet Set, Go! (cameo), Gordon Runs Dry (cameo), Special Surprise, The Railway Rink, Muddy Matters (mentioned), and New Year Party (does not speak)
 * 2014 - Engine Trouble, Valentine's Surprise, Friendship Fall-out, The Royal Carriage, Wobbly Ol' Wheezy (mentioned), Mystery Fog!, Henry's Forest, William's Wish, Swanky Cranky!, Leaves on the Line!, Percy's Perfect Gift, and Frozen Turntable (does not speak)
 * 2015 - Duck in the Water (speaks in speech bubble only), Spencer's Star (mentioned), Missing Gator, Don't Be Late, Percy!, and The Perfect Present
 * 2016 - Percy's Lucky Day and James' Ghost Train!

Percy also appeared in the magazine stories, A Good Hiding Place, A Job for James, A Long Way Up!, A Puzzle for Percy, Big Catch, Bill and BoCo, Boat Afloat, Bulgy's Dream, Clean Getaway!, Clever Climbers!, Come back, Please!, Daisy and the Fish, Dressing Up, Engine Plates, Fast Food!, Fish and Fog!, Fishy Diesel!, Flying James, Funnels and Tunnels, Glider Rider, Good Games, Bad Sport!, Happy Holiday!, Harvest Time, Henry and Diesel, How Does Percy Work?, I Spy with my Little Eye, Jack Frost, Jim's Jungle Ride!, Just Right, Keeping Dry, Lazy Wheels, Letting off Steam!, Looking Splendid, Lost Luggage!, Making a Mess!, On Inspection, Percy gets Wet!, Percy's House, Percy's Plight, Percy's Spooky Tooth, Percy's Stories, Percy and Terence, Percy and the Trucks, Pigeon Passengers!, Pink Cows, Proud Percy!, Puzzles, Really Useful Edward, Rhyming Engines, Rushing Around, Seeing Steam, Snake Mistake, Sodor's Strongest Engine, Spooky Station, Spotty Spencer, Steaming Along!, Taking Toby, The Balloon Race, The Big Ship, The Camel Train, The Cat Controller!, The Christmas Sacks, The Cloud Factory!, The Dodgems, The Flying Broomstick, The Flying Horse, The Lost Parcel, The Runaway Percy, The Trainspotters, The UFO, There and Back, and Think Pink.}}

Voice Actors

 * Michael Angelis (Thomas and the Magic Railroad; original workprints only)
 * Linda Ballantyne (Thomas and the Magic Railroad)
 * Keith Wickham (UK; Hero of the Rails - Sodor's Legend of the Lost Treasure, excluding the nineteenth season)
 * Nigel Pilkington (UK; nineteenth season onwards, excluding Sodor's Legend of the Lost Treasure)
 * Martin Sherman (US; Hero of the Rails - eighteenth season)
 * Christopher Ragland (US; nineteenth season onwards, UK singing voice; The Great Race)
 * Chisato Nakajima (Japan; first-eighth seasons)
 * Takeshi Endo (Japan; A Close Shave only)
 * Chie Kōjiro (Japan; Calling All Engines! onwards)
 * Anders Sundstedt (Norway; Hero of the Rails - seventeenth season, excluding King of the Railway)
 * Erik Skjøld (Norway; King of the Railway and Tale of the Brave only, excluding the seventeenth season)
 * Ingve Connolly Gran (Norway; eighteenth season onwards)
 * Tony Marot (France and French speaking Canada; eighth season onwards)
 * Mattia Nissolino (Italy)
 * Eduardo Garza (Latin America; Thomas and the Magic Railroad; TV Version)
 * Javier Olguín (Latin America; Hero of the Rails - The Great Race)
 * Héctor Ireta de Alba (Latin America; twentieth season onwards)
 * Frank Schröder (Germany; Thomas and the Magic Railroad)
 * Robin Brosch (Germany; Hero of the Rails onwards)
 * Achim Schülke (Germany; Audio Books only)
 * Grzegorz Drojewski (Poland)
 * Jarosław Domin (Poland; Samson at Your Service only)
 * Reinder van der Naalt (The Netherlands)
 * Yehonatan Magon (Israel)
 * Troells Toya (Denmark)
 * Bruno Marçal (Brazil; Hero of the Rails onwards)
 * María Rubio (Spain)
 * Taisto Oksanen (Finland; Hero of the Rails onwards)
 * Olga Kuznetsova (Russia)

Trivia

 * One of Percy's models is currently on display in Japan at the Hara Model Railway Museum (previously on display at Nitrogen Studios). His large scale model used for the spin-off series, The Pack, is also on display in Japan at the Hara Model Railway Museum (previously on display at Thomas Town).
 * Percy is the only engine who is known to have been named by the Fat Controller.
 * According to Abi Grant on her website, Percy is her favourite character.
 * Britt Allcroft stated he was also her favourite (due to him being green and cheeky).
 * He is also Mark Moraghan's favourite character, alongside Cranky.
 * Percy is the first character to say the infamous line "and then there was trouble."
 * Percy has had three cameos in the American sit-com Everybody Loves Raymond.
 * Percy's whistle sound is actually Edward and Henry's in higher pitched.
 * Percy is the first character other than Thomas to be the main protagonist in a special, which he would later do again.
 * Percy went through several aesthetic changes in the television series:
 * Season 3:
 * His whistle changed shape (now being more of a cylinder shape).
 * His whistle is one tone lower later in the season.
 * Season 4:
 * His whistle changes back to its original tone.
 * In some episodes towards the end of the season, one of the two black sections extending from under his smokebox to the end of the footplate is missing.
 * Thomas and the Magic Railroad:
 * He gained a permanent lamp
 * A stand underneath his smokebox.
 * His eyebrows change shape.
 * Season 6:
 * His cab was blacked out (except for cab shots filmed on a larger model).
 * Jack and the Sodor Construction Company (Large Scale Model Only):
 * The step ladders on his running board are painted red.
 * His whistle is taller than his cab.
 * The Great Discovery:
 * His large scale model's dome is painted gold.
 * Season 12:
 * His large scale model's stepladders were painted green.
 * Hero of the Rails:
 * His cab became open again
 * The counterweights on his wheels vanished.
 * Season 19:
 * His side rods become silver.
 * Percy was featured on the 1986 single cover of Oh L'amour, a song by English synthpop duo Erasure.
 * One of Percy's original face masks is owned by Twitter user ThomasTankMerch.

Quotes

 * "Do you know what?" asked Percy.
 * "What?" grunted Gordon.
 * "Do you know what?"
 * "Silly," said Gordon crossly, "Of course I don't know what, if you don't tell me what 'what' is."

- A conversation between Percy and Gordon, "Percy the Small Engine"


 * "Nobody listens to me now! They think I'm a silly little engine, and order me about. I'll show them."

- Percy, "Percy the Small Engine"


 * "Wheeeeeeeeeeesh!" Percy gave his ghostly whistle. "Don't be frightened, Thomas," he laughed, "it's only me!"
 * "Your ugly fizz is enough to frighten anyone," said Thomas crossly. "You're like..."
 * "Ugly indeed! I'm..."
 * "A green caterpillar with red stripes," continued Thomas firmly. "You crawl like one too."
 * "I don't."
 * "Who's been late every afternoon this week?"
 * "It's the hay."
 * "I can't help that," said Thomas. "Time's time, and the Fat Controller relies on me to keep it. I can't if you crawl in the hay 'till all hours."

- An argument between Percy and Thomas, "Tramway Engines"


 * "Harold told me you were a ..... uh wizard. He says he could beat you at some things but not at being a submarine. I don't know what you two get up to sometimes but I do know you are a really useful engine."

- Sir Topham Hatt, after Percy took a swim in "Percy's Promise"


 * "I can't see any," said Percy. "Where are they?"
 * "Any what?" said Gordon.
 * "Ideas above the station - the sky is empty."
 * "Like your smokebox, Percy!" laughed James.

- A brief example of Percy's curiosity, "A Better View for Gordon", fifth season

"And then there was trouble!"

- Percy breaks the fourth wall with the infamous quote, "Reds vs. Blues", nineteenth season

Songs

 * Will You Won't You (performed)
 * Be Who You Are And Go Far (performed)

Merchandise

 * ERTL (normal, Gold Rail, and metallic, all discontinued)
 * Wooden Railway (several versions)
 * Take Along (discontinued normal, metallic, and lights and sounds)
 * Take-n-Play (normal, pull back, talking, push 'n' puff, and glow racers)
 * My First Thomas (normal and talking)
 * Motor Road and Rail (normal, talking, and chocolate-covered; discontinued outside Asia)
 * TrackMaster (normal, talking, greatest moments, and RC)
 * Hornby
 * Bachmann (HO and large scale)
 * Lionel
 * Märklin
 * Tomix
 * Tomica
 * Woody Capsule Series
 * Trading Cards
 * My Thomas Story Library (discontinued)
 * Engine Adventures (discounted)
 * Thomas Engine Collection Series (discontinued)
 * Mini Die Cast Collection (normal and with Santa hat; discontinued)
 * Departing Now (discontinued)
 * Thomas Town (discontinued)
 * Capsule Collection
 * Wind-up
 * Pocket Fantasy (discontinued)
 * Brio (discontinued)
 * Pez
 * LEGO Duplo (discontinued)
 * Mega Bloks (discontinued)
 * Meccano (discontinued)
 * Around Town with Thomas
 * Discover Junction
 * Diablock (large and mini)
 * Nakayoshi
 * Boss (normal and pullback; discontinued)
 * New Block
 * Collectible Railway
 * Motorized Railway
 * De Agostini
 * Push Along
 * Aquadraw
 * Pullback Racers
 * Padlock and Key
 * Micro Rubber Engines
 * Pull 'n' Spin
 * Pico Pico
 * Interactive Learning Railway
 * Minis
 * Classic Minis
 * Metallic Minis
 * Racers Minis
 * Dino Minis
 * Spooky Minis
 * DC Super Friends Minis (As Robin, Red Tornado and Reverse-Flash)
 * Warrior Minis
 * Core Moments Minis (Chocolate Percy)
 * Glow in the Dark Minis
 * SpongeBob SquarePants Minis (As Patrick Star)
 * Tootsie Minis (Tootsie)
 * Animals Minis (Tiger)
 * Aquatic Minis (Octopus)
 * Monster Minis (Blob)
 * Mighty Morphin' Power Rangers Minis (As the Green Ranger)
 * Bath Toys
 * Choro-Q
 * Switch-On Keychains (normal and chocolate covered)
 * MV Sports (in figure of 8 set; discontinued)
 * Pre-Cut Model Engine Books (with Clarabel; discontinued; re-released separately; re-discontinued)
 * Big Buddy (discontinued)
 * Rail Rollers
 * Thomas and Friends Adventures (coming soon)
 * Waku Waku