Diesel Glows Away

"I sometimes wonder, Nia, if it might be easier to be useful if Diesel wasn't around."

- Paxton

Diesel Glows Away is the twentieth and final episode of the twenty-third series.

Plot
When Diesel hides from the other engines, his plans backfire and he gets a surprise on Sodor.

Characters

 * Nia
 * Diesel
 * Den
 * Paxton
 * Owen
 * Stanley
 * Norman
 * Henry
 * Rebecca
 * Philip
 * Skarloey
 * Sir Handel
 * Duncan
 * Thomas

Locations

 * Tidmouth Sheds
 * Knapford Yards
 * Crosby Tunnel
 * Vicarstown Dieselworks
 * Vicarstown Diesel Sheds
 * Blue Mountain Quarry

UK

 * John Hasler as Thomas
 * Kerry Shale as Diesel
 * Yvonne Grundy as Nia
 * Steven Kynman as Paxton
 * Rob Rackstraw as Stanley and Owen
 * Keith Wickham as Den and Norman

US

 * Joseph May as Thomas
 * Kerry Shale as Diesel
 * Yvonne Grundy as Nia
 * Steven Kynman as Paxton
 * Rob Rackstraw as Stanley and Owen
 * Keith Wickham as Den and Norman

Trivia

 * Going by production order, this is the twelfth episode of the twenty-third series.
 * This episode marks Owen's first speaking role since the eighteenth series episode, Long Lost Friend and the first time he is voiced by Rob Rackstraw. This is also his only speaking role in the twenty-third series.
 * This episode marks Stanley's only speaking role in the twenty-third series, albeit only in a fantasy sequence. On top of that, Rob Rackstraw voices him in the UK dub instead of Matt Wilkinson.
 * This marks the last of several things:
 * The last episode produced by Mattel Creations under their original name.
 * The last episode to have Andrew Brenner as head writer. David Stoten takes over in the following series and Steam Team to the Rescue.
 * Stanley and Norman's last speaking roles.
 * Den and Duncan's last appearances. Duncan was supposed to appear in the twenty-fourth series episode, The Great Little Railway Show, but he was dropped because he would have only had one line.
 * The last episode to air in the UK during Michael Angelis' lifetime, as he died from a heart attack on 30th May 2020, fifteen days later.
 * Paxton's last leading and speaking role.
 * The last appearance of the Vicarstown Dieselworks.
 * The last time where Thomas does not appear in the series finale.
 * The last episode aired in the U.S.A. before the COVID-19 pandemic which caused businesses to shutdown in the early Spring of 2020.
 * This episode marks the third time Thomas does not appear in a series finale episode, the first was the sixth series episode, Faulty Whistles and the second was the eleventh series episode, Wash Behind Your Buffers.
 * The paint that Diesel used in this episode is also seen in the twentieth series episode, Henry in the Dark.
 * On the Nick Jr. US airing of this episode, it was paired with Wish You Were Here.
 * In the Dutch dub, the Let's Dream song was played an instrumental version for the end song.

Goofs

 * Diesel, Nia and Paxton travel on narrow gauge track in the tunnel at the Blue Mountain Quarry despite all being standard gauge engines.
 * Stanley has his US voice in the UK dub. Despite that, Matt Wilkinson is still listed as his voice actor in the UK credits.
 * In the Latin American Spanish dub, Nia's line when she thanks Owen is left silent.

UK/AUS

 * The Royal Engine

Diesel wünscht sich was Diesel el Brillante Diesel Świeci Исчезнувший Дизель