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"He may have whirley arms instead of wheels, but he seems to understand just what an engine needs!"
~ Duck, All at Sea, third season

Harold the Helicopter is a supporting character in Thomas the Tank Engine & Friends. He is a rescue patrol helicopter, who flies in the bright, blue skies over the Island of Sodor to help those in need of rescue. He is a good friend to all the engines, even though they often refer to him as whirlybird. In his first appearance, he claimed that railways were ``slow and out of date, but was proven false when having a race with Percy. He and Percy both love doing the same job, delivering the mail. Harold is now part of the new Sodor Search and Rescue Team!


When Harold first met Percy, he stated that railways were "slow and out-of-date", but was proven wrong when Percy beat him in a race. When Thomas' brakes failed while boarding at a station, with an inspector Harold chased him down the line. Christmas that year Harold brought Santa Claus to the party at Tidmouth Station. Harold also dropped hot drinks for Percy's crew when they were stranded in a floating river and made friends with Duck after rescuing an injured sailor.

Harold lives at Dryaw Airfield by Thomas' Branch Line. He keeps a watchful eye over Sodor in case of trouble and speeds to the rescue of anyone in distress.

As of Misty Island Rescue, he has joined the Sodor Search and Rescue team and lives in his own hangar at the Sodor Search and Rescue Centre. Since joining the team he has been involved in a search for Thomas when he got lost, saving Bertie from the Shake Shake Bridge and helping Charlie to recapture an elephant which had escaped from the Sodor Animal Park. Once, Harold's rotors became jammed, so Thomas and Duck took him to the Sodor Search and Rescue Centre.

He and the rest of the rescue team helped out after a big storm, and they were rewarded with a new alarm bell for the rescue centre. He later found Percy and Diesel trapped in a flood at the old quarry, and the rescue team helped them out. He also helped The Duke and Duchess of Boxford get to Callan Castle, after Thomas, Spencer, and Bertie failed.


Harold speaks in a manner reminiscent of an RAF pilot, using terms such as "wizard" and "old chap" in conversation.

Throughout the second to fourth seasons, Harold somewhat tended to be full of himself as he felt that "railways are slow", but he always got his comeuppance in the end. He temporarily regained this part of his personality in A Bad Day for Harold the Helicopter.


Harold is based on a Sikorsky S-55 helicopter, built in the UK as the Westland Whirlwind. He has added floats.


Harold is painted white with red lining.


Railway Series

  • Percy the Small Engine
  • More About Thomas the Tank Engine
  • Thomas Comes Home (does not speak)
  • Thomas and the Fat Controller's Engines (cameo)
  • Thomas and the Missing Christmas Tree (does not speak)

Television series

  • Season 2 - Percy and Harold, The Runaway, and Thomas and the Missing Christmas Tree (does not speak)
  • Season 3 - Percy's Promise, Thomas, Percy and the Post Train, All at Sea, and Thomas and Percy's Christmas Adventure
  • Season 4 - Trucks!
  • Season 5 - Baa! (does not speak), Toby and the Flood, Thomas and the Rumours (does not speak), Oliver's Find, Sir Topham Hatt's Holiday, and Make Someone Happy
  • Season 6 - A Bad Day for Harold the Helicopter and Percy's Chocolate Crunch
  • Season 7 - Emily's New Coaches (cameo), Harold and the Flying Horse, Best Dressed Engine (cameo), The Grand Opening (does not speak), and Three Cheers for Thomas
  • Season 8 - Don't Tell Thomas
  • Season 9 - Thomas and the Rainbow (does not speak), The Magic Lamp, and Bold and Brave
  • Season 10 - Topped Off Thomas (does not speak), Thomas and the Birthday Mail, and Thomas and the Treasure
  • Season 12 - Henry Gets It Wrong and James Works it Out
  • Season 14 - Henry's Health and Safety (cameo), Being Percy (cameo), Jumping Jobi Wood! (does not speak), Jitters and Japes (cameo), and Merry Misty Island
  • Season 15 - Toby and Bash (cameo), Edward the Hero, James to the Rescue (cameo), Happy Hiro (cameo), Henry's Happy Coal (cameo), Let it Snow, Stop that Bus!, Stuck on You, and Fiery Flynn (cameo)
  • Season 16 - Race to the Rescue (cameo), Express Coming Through (does not speak), Sodor Surprise Day (does not speak), and Welcome Stafford (cameo)
  • Season 17 - Not Now, Charlie!, The Thomas Way, and Too Many Fire Engines (does not speak)
  • Season 18 - Duck in the Water (does not speak), Thomas and the Emergency Cable (mentioned), and Last Train for Christmas (does not speak)
  • Season 19 - Toad and the Whale, Helping Hiro, Wild Water Rescue, Two Wheels Good, The Other Side of the Mountain (does not speak) and Rocky Rescue


  • Thomas and the Magic Railroad
  • Calling All Engines!
  • The Great Discovery
  • Misty Island Rescue
  • Day of the Diesels (cameo)
  • King of the Railway (cameo)
  • The Great Race

Magazine stories

  • 1988 - Thomas and Harold, Percy and Harold, and The Runaway
  • 1989 - Hurricane!, Diesel's Christmas (does not speak) and An Important Visitor (cameo)
  • 1990 - Rumours and Speculation (does not speak)
  • 1992 - James's Task
  • 1996 - Night Lights (does not speak)
  • 1998 - Really Useful Rusty!, The Exhibition! (mentioned) and The Beached Whale!
  • 1999 - Thomas is Rescued (does not speak) and Harold and Henry
  • 2000 - A Special Story About Harold (does not speak), Harold's Race!, and Harold's View
  • 2001 - The Eyesight Test (mentioned), A Special Story About Harold, The Kite Contest, and Harold Goes Quiet
  • 2002 - Henry (cameo)
  • 2003 - False Alarm, Harold's Bad Day, Henry's Dizzy Day, Surprise, Surprise!, Mountain Rescue, Queen of the Road!, Super Heroes! (does not speak), Flying Fish! (cameo), Broken Bridges (cameo), and Cruise Control! (does not speak)
  • 2004 - Pony Pick-Up!, Harold's Bad Day, Going for a Swim!, Special Signal, Henry to the Rescue (does not speak), Dirty Percy!, The Grand Opening (does not speak), Holiday Hat (cameo), Dockers' Dinner (cameo), Emily Saves Henry (cameo), and Night Lights (cameo)
  • 2005 - Mine Mystery (cameo) and Tidy-Up Time! (cameo)
  • 2006 - Monster Mistake (does not speak), Caroline's Cruise, Passenger Plane, and Sparkling Sky
  • 2007 - Airship (does not speak), Autumn Leaves (does not speak), Blown About!, The Telescope (does not speak), Rusty's Rescue!, Playful Passengers (cameo), and Henry's Hairy Passenger (cameo)
  • 2008 - Snow Trouble!, Mystery Music (cameo), Big is Beautiful, and Percy's Post!
  • 2009 - New Delivery (cameo)
  • 2010 - Henry Gets It Wrong! (does not speak), Harold Afloat, Misty Island Rescue (cameo), Saving Santa!, Thomas Takes Off!, Thomas and the Rainbow! (does not speak), In a Spin, and Disgusted Diesels (cameo)
  • 2011 - Racing on the Rails, Monster Mistake (does not speak), Misty Island Rescue (cameo), Rosie's Rocks, Harold and the Kites, Pictures in the Sky (cameo), Splashdown!, Tidy Thomas (cameo), and Playful Passengers (cameo)
  • 2012 - Edward the Hero (does not speak), Operation Rescue, The Fat Controller's Bedtime Story (Issue 639) (does not speak), Making Hiro Happy (cameo), Where's That Bus?, Happy Harold, Carol Concert, Clock Countdown, A Musical Mystery (cameo), Playful Passengers! (cameo), and The New Delivery (cameo)
  • 2013 - Hover Bother!, Sodor Surprise Day (does not speak), Henry's Scary Passenger! (cameo), Toby to the Rescue, and All in a Day's Rescue (mentioned)
  • 2014 - The Thomas Way (does not speak), Kite Flying (does not speak), William's Wish, and Edward the Helpful Engine (mentioned)
  • 2015 - Duck in the Water (speaks in speech bubble only)

Harold also appeared in the magazine stories, Animals, Bright Sight, Come back, Please!, Company for Cranky, Fishy Diesel!, Glider Rider, Harold and the Broken Tree, Lost Luggage!, On Inspection, Percy's Plight, Ride and Slide, Sky High!, Smoke Signals, Smoky Sky, Sodor Goes Pop, Sound of Silence, Steaming Along!, Stone Signal, The Best Band, The Flying Horse, The Great Air Race, The Great Statue Robbery, The Lighthouse Light, and The Trainspotters.


  • In the second season, Harold's spinning rotors were achieved using a transparent disk.
  • During the third and fifth seasons, Harold's rotor blades were flimsy and they bent a bit.
  • Harold's television series model did not have moving eyes until the tenth season.
  • One of Harold's models is currently on display in Japan at the Hara Railway Museum (previously on display at Nitrogen Studios).
  • In season twelve, Harold was the only (non-human) character to be fully CGI-animated.
  • In the early seasons, Harold would sometimes be given a searchlight, such as in The Runaway, Thomas and the Missing Christmas Tree, and Thomas, Percy and the Post Train. From the eighth season onward, the light has been added permanently.
  • In the television series, Harold has never had eyebrows. While in the "The Railway Series", he does.
  • Harold was called Herbert in the French dub of the Classic Series.
  • According to the Sodor Superstars Hall of Fame featured on Percy's Chocolate Crunch and Other Thomas Adventures, Harold has never flown out of Sodor. However, this is now false, as Harold has been seen on Misty Island in later seasons.


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Thomas the Tank Engine | Edward the Blue Engine | Henry the Green Engine | Gordon the Big Engine | James the Red Engine | Percy the Small Engine | Toby the Tram Engine | Duck the Great Western Engine | Donald and Douglas the Scottish Twin Engines | Oliver the Great Western Engine | Diesel the Diesel Engine | Bill & Ben | Daisy the Diesel Railcar | Mavis the Quarry Diesel | Stepney the Bluebell Engine | Emily the Stirling Engine | Bertie the Bus | Harold the Helicopter | Sir Topham Hatt

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Mr. Rogers

Thomas and Friends
Thomas the Tank Engine | Edward the Blue Engine | Henry the Green Engine | Gordon the Big Engine | James the Red Engine | Percy the Small Engine | Toby the Tram Engine | Duck the Great Western Engine | Donald and Douglas the Scottish Twin Engines | Oliver the Great Western Engine | Emily the Stirling Engine | Harold the Helicopter | Sir Topham Hatt

Barney and Friends
Barney the Dinosaur | Baby Bop | B.J. | Riff

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Dragon Tales
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Zoboomafoo / Wild Kratts
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Between the Lions
Theo | Cleo | Lionel | Leona | Click

Clifford the Big Red Dog
Clifford the Big Red Dog | Emily Elizabeth Howard | Cleo | T-Bone | Mac | Charley | Jetta Handover | Vaz

Sagwa the Siamese Cat
Sagwa Miao | Dongwa Miao | Sheegwa Miao

Liberty's Kids
James Hiller | Sarah Phillips | Henri | Benjamin Franklin | Moses

Jackie | Matt | Inez | Digit | Slider | Motherboard | Dr. Marbles

Berenstain Bears
Papa Bear | Mama Bear | Brother Bear | Sister Bear

Maya and Miguel
Maya Santos | Miguel Santos

Bob the Builder
Bob the Builder/Bob the Builder (2015 Series) | Wendy | Mr. Bernard Bentley | Scoop | Muck | Dizzy | Roley | Lofty | Pilchard | Bird | Travis | Spud | Farmer Pickles | Scrambler | Scratch | Rubble | Two-Tonne | Stretch | Leo | Ace | Thud | Crunch

Jakers! The Adventures of Piggley Winks
Piggley Winks | Ferny Toro | Dannan O'Mallard | Molly Winks | Padrig Winks | Elly Winks | Don Toro | Ciara

Humbah | Zumbah | Zing Zing Zingbah | Jumbah | Jingbah

It's a Big Big World
Snook | Smooch | Winslow | Bob | Burdette | Riona | Madge | Oko | Ick | Wartz

Fetch! with Ruff Ruffman
Ruff Ruffman | Blossom | Chet

Curious George
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WordGirl | Captain Huggy Face

Dog | Duck | Frog | Ant | Pig | Sheep | Bear | Bee | Bug | Fly

Super Why!
Super Why | Princess Presto | Wonder Red | Alpha Pig | Woofster

Sid the Science Kid
Sid the Science Kid

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Dinosaur Train
Buddy | Tiny | Don | Shiny | Mrs. Pteranodon | Mr. Pteranodon | Mr. Conductor

The Cat in the Hat Knows a Lot About That!
The Cat in the Hat | Nick | Sally | The Fish | Thing One and Thing Two

Daniel Tiger's Neighborhood
Daniel Tiger | O the Owl | Katerina Kittycat | Miss Elaina | Prince Wednesday | Chrissie | Jodi Platypus

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Agent Olive | Agent Otto | Ms. O | Agent Oscar | Agent Olympia | Agent Otis | Agent Oona | Agent Omar | Agent Opal | Agent Orla | Agent Oswald

Nature Cat
Nature Cat | Hal the Dog | Squeeks the Mouse | Daisy the Bunny

Ready Jet Go!
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Splash and Bubbles
Splash | Bubbles | Dunk | Ripple

Pinkalicious & Peterrific
Pinkalicious Pinkerton | Peter Pinkerton

Let's Go Luna!
Luna | Andy Hopper | Carmen Mariposa | Leo Chockers

Molly of Denali
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Xavier Riddle and the Secret Museum
Xavier Riddle

Elinor Wonders Why
Elinor Rabbit | Ari Bat | Olive Elephant

Donkey Hodie
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