As if Diesel 10 wasn't bad enough! His brother Diesel 11 and their friend, Diesel 12, along with Smelter the Scrappy, return to destroy steam engines when Sir Topham Hatt takes a vacation in December. Thomas, pulling a freight train with Edward, goes down an old line one day and they crash into a five berth shed and discover Lord. A memory returns to them and they realize that this engine worked with them. Diesel hears of this, and presumes that both he and Lady are the source of the railway and informs Diesel 10 and he is given new wheeels and they begin their attack on Sodor.


Main Cast

  • Thomas: The main hero of the story who runs a branch line on the Island of Sodor. When Diesel 10 starts causing trouble on the railway, Thomas is determined to save Lord from him.
  • Percy: One of Thomas' three best friends who helps him protect Lord.
  • Stanley: One of Thomas' three best friends who helps him protect Lord. He and Thomas had worked with Lord on their old railway.
  • Toby: One of Thomas' three best friends who helps him protect Lady. He is like an older brother to Molly.
  • Edward: Used to work with Thomas, Stanley, Lady, and Lord.
  • Molly: Helps protect Lord. She and Lord become friends in the end.
  • Diesel 10: A scheming diesel who has returned to Sodor to destroy the lost engine and get rid of steam engines once and for all. His brother and friends help destroy Lord
  • Smelter: An diesel helping Diesel 10 to destroy Lord and the other steam engines.
  • Diesel, Arry, Bert, Splatter and Dodge: Diesel 10's hench-diesels.
  • Lady: A magical tank engine who generates the energy that keeps Sodor alive.
  • Lord: The tender engine who also generates the energy that keeps Sodor alive.

Supporting Cast

  • Edward
  • Henry
  • Gordon
  • James
  • Duck
  • Donald and Douglas
  • Oliver
  • Emily
  • Daisy
  • Mavis
  • Boco
  • Bill and Ben (non-speaking roles)
  • Whiff
  • Neville
  • Spencer
  • Danni
  • Eagle
  • Harvey
  • Hank
  • Rosie
  • Dennis
  • Harley (non-speaking role)
  • J.L. Bark
  • Skarloey
  • Rheneas
  • Sir Handel
  • Peter Sam
  • Rusty
  • Duncan
  • Ivo Hugh
  • Duke
  • Fred
  • Freddie
  • Mighty Mac
  • Bertram
  • Annie and Clarabel
  • Henrietta and Victoria (non-speaking roles)
  • Martha and Jennifer (non-speaking roles)
  • Rocky
  • Bertie
  • Harold
  • George
  • Cranky (non-speaking role)
  • Sir Topham Hatt
  • Lady Hatt
  • Bash
  • Dash
  • Ferdinand
  • Mr. George Handek


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