Series 15

The fifteenth season of the television series aired during March 2011 in the UK and between April and June in the US. This season has a total of twenty episodes.

Song

 * Hear the Engines Coming

Characters

 * Thomas
 * Edward
 * Henry
 * Gordon
 * James
 * Percy
 * Toby
 * Emily
 * Spencer
 * Rosie
 * Whiff
 * Stanley
 * Hiro
 * Charlie
 * Bash and Dash
 * Ferdinand
 * Diesel
 * Mavis
 * 'Arry and Bert
 * Salty
 * Victor
 * Belle
 * Flynn
 * Den
 * Dart
 * Rocky
 * Bertie
 * Butch
 * Kevin
 * Harold
 * Cranky
 * Captain
 * Sir Topham Hatt
 * Lady Hatt
 * Dowager Hatt
 * Farmer McColl
 * The Duke of Boxford
 * Mr. Bubbles
 * The Sodor Search and Rescue Centre Manager
 * The Maithwaite Stationmaster
 * Workmen
 * The Schoolchildren
 * The Ginger-haired Boy
 * The Blonde-haired Boy
 * Norman (not named)
 * The Duchess of Boxford (does not speak)
 * Scruff (cameo)
 * Paxton (cameo)
 * Annie and Clarabel (cameo)
 * Henrietta (cameo)
 * Trevor (cameo)
 * Stephen Hatt (cameo)
 * Bridget Hatt (cameo)
 * Mr. Percival (cameo)
 * Jem Cole (cameo)
 * Allicia Botti (cameo)
 * Sodor Brass Band (cameo)
 * The Railway Inspector (cameo)
 * The Dairy Manager (cameo)
 * The Photographer (cameo)
 * The Bargeman (cameo)
 * The Fireman (cameo)
 * The Knapford Stationmaster (cameo)
 * The Teacher (cameo)
 * The Bird Watcher (cameo)
 * The Tree Specialists (cameo)
 * Three Sodor United Players (cameo)
 * The Laundry Lady (cameo)
 * The Lady with the Big Hat (cameo)
 * The Female Puppet Show Entertainer (cameo)
 * Farmer Trotter (mentioned)
 * Father Christmas (mentioned)
 * Sir Handel (original concept only)
 * Peter Sam (original concept only)
 * Duke (original concept only)

Characters Introduced

 * The Railway Coal Inspector
 * Dowager Hatt's Friends (do not speak)
 * Albert's Wife (cameo)

Half hour format
When season 15 aired on PBS in the US and Nick Jr. in the UK, each broadcast airs two episodes, a song and a Down at the Station segment.

Exciting Friends

 * Gordon and Ferdinand
 * Song: All You Need
 * Toby and Bash

Kindness with Friends

 * Percy's New Friends
 * Song: All You Need
 * Emily and Dash

Learning Together

 * James to the Rescue
 * Song: Go, Go Thomas
 * Down at the Station: The Steam Engine
 * Happy Hiro

Happy Engines

 * Henry's Happy Coal
 * Song: Go, Go Thomas
 * Down at the Station: Coal
 * Edward the Hero

Fun in the Snow

 * Let it Snow
 * Song: TBA
 * Percy the Snowman

Helping Each Other

 * Stop that Bus!
 * Song: Roll Along
 * Down at the Station: Passengers
 * Spencer the Grand

Laughing Together

 * Big Belle
 * Song: Go, Go Thomas!
 * Stuck on You

Slow Down!

 * Wonky Whistle
 * Song: Hear the Engines Coming
 * Down at the Station: Going Backwards
 * Up, Up and Away!

Special Times

 * Surprise, Surprise
 * Song: TBA
 * Tree Trouble

Being Useful

 * Kevin the Steamie
 * Song: Hear the Engines Coming
 * Down at the Station: Fireman
 * Fiery Flynn

UK, AUS and NZ

 * Michael Angelis as the narrator
 * Ben Small as Thomas, Toby and Ferdinand
 * Teresa Gallagher as Emily, Rosie, Belle, Mavis, Lady Hatt and the Ginger-haired Boy
 * Keith Wickham as Edward, Henry, Gordon, James, Percy, Whiff, Dash, Salty, Den, Harold, Captain, Sir Topham Hatt, Dowager Hatt, Mr. Bubbles and the Railway Coal Inspector
 * Matt Wilkinson as Spencer, Stanley, Charlie, Bash, Victor, Cranky, Kevin, Farmer McColl, the Duke of Boxford, the Maithwaite Stationmaster and the Sodor Search and Rescue Centre Manager
 * Rupert Degas as Den (Fiery Flynn only), Dart, Flynn, Bertie and Butch
 * Togo Igawa as Hiro
 * Kerry Shale as Diesel, 'Arry, Bert and Norman
 * William Hope as the Steamworks Worker and the Farm Hands (uncredited)

US and CAN

 * Michael Brandon as the narrator, Diesel and Mr. Bubbles
 * Martin Sherman as Thomas and Percy
 * Jules de Jongh as Emily, Rosie, Mavis and Lady Hatt
 * William Hope as Edward, Toby, Whiff, Bash, Rocky, the Duke of Boxford, the Maithwaite Stationmaster, the Steamworks Worker and the Farm Hands
 * Kerry Shale as Henry, Gordon, James, Dash, 'Arry, Bert, Norman, Harold, Kevin, Sir Topham Hatt, and the Railway Coal Inspector
 * Keith Wickham as Salty, Den, Captain and Dowager Hatt
 * Ben Small as Stanley
 * Teresa Gallagher as Belle and the Ginger-haired Boy
 * Rupert Degas as Den (Fiery Flynn only), Dart, Flynn and Bertie
 * Togo Igawa as Hiro
 * David Bedella as Victor
 * Glenn Wrage as Spencer, Charlie, Ferdinand, Cranky, Butch and the Sodor Search and Rescue Centre Manager

Trivia

 * This season was supposed to be shown after Day of the Diesels, but was brought forwards for unknown reasons.
 * This season marks the first of a few things:
 * Butch's first speaking role in the television series.
 * Trevor's first episodic appearance in full CGI.
 * Arlesdale End, Castle Loch, the Norramby Fishing Village and Wellsworth's first appearances in full CGI.
 * The first and only season to have Rupert Degas as Butch in the UK. Matt Wilkinson later took over this role in the sixteenth season.
 * The first season to have Rupert Degas as part of the voice cast.
 * The first season, with Season 20 being the second, not to have Thomas' name titled in any of the episodes.
 * The first and only season to date, where Thomas, Gordon and Percy have more roles than the rest of the Steam Team.
 * This season marks the last of a few things:
 * The last season in which Christopher Skala was executive producer.
 * The last season in which Jo Jordan was creative producer.
 * The last season to have Jukka Voutilaninen as the voice of Hiro in the Finnish dub.
 * Percy's whistle now budges up and down whenever he uses it.
 * Jules de Jongh is credited in the UK credits despite none of her characters speaking in that dub.
 * On Netflix UK, this series was listed as being season 13. The mistake was later corrected.
 * In Finland, this season was shown on the website MTV Juniori before airing on television.

Behind the Scenes
Seria 15 העונה החמש עשרה