“A board game! Who even plays board games anymore?”

Jay after seeing William's Gift, presumably in "The Gift"

Season 21 (Season 12 in EGS), subtitled Rust Disorder is preceded by Season 20. Jay is the mascot and focus ninja, William Hardrock, who is the Rust King, serves as the main antagonist, while The Rustic Nindroids serve as the villainous faction of this season.

This takes place on Earth-101, a world where the darkness, Lord Garmadon speaks about in the finale of Hunted is not the Oni, it is past villains from the first 2 seasons of Ninjago Returning.

This season is based on Season 12 of LEGO Ninjago, Prime Empire but the story is different.


Main Characters

  • Jay
  • Nya
  • Zane
  • Cole
  • Kai


  • William Hardrock/Rust King
  • Rustic Nindroids

Secondary Characters

  • Russell Borg
  • Cyrus Borg

Minor Characters

  • Benjamin Borg (Flashback only)
  • Jorah Tightwad (Flashback only)


The set wave of this season will be released on March 1, 2020.

  • 70726 Jay's Lightning Bike!
  • 70727 Rusty Police Attack!
  • 70728 The Rust Castle
  • 70729 Rusty Key Temple
  • 70730 The Rusty Ninja (polybag)


Months after the Dimension Hopper crisis, the ninja find a board game called Rust Disorder, an unpopular board game that some Ninjago Citizens were trapped in decades ago. The Board Game has a mysterious backstory that the ninja don't know of.


note: names in Red are subject to change.

Season Ep


Series Ep


Image Episode Name Airdate
The Rustic Chapter
1 211
The Visit
"The Visit" February 28, 2020
2 212
The Gift (1)
"The Gift" February 29, 2020
3 213
"Non-Ninjagans" March 1, 2020
4 214
The Colorful Arena
"The Colorful Arena" March 6, 2020
5 215
The Challenge
"The Challenge" March 7, 2020
The Future Chapter
6 216
Multiple Dimensions
"Multiple Dimensions" March 10, 2020 (CN App)

March 13, 2020 (US)

7 217 "The Origin" March 14, 2020 (US)
8 218 "Just Keep Jumping" March 15, 2020 (US)
9 219 "Kingdom of the Future" March 16, 2020 (US)
10 220


  • It continues the story that begins in "Dimension Hopper."
  • It was originally titled Rustic or Behind the Times.
  • This season will explain a lot more about the backstory of the Borg family.
  • There will be an episode in this season focusing on the Borg Family's backstory.
  • Similar to how Secrets of the Forbidden Spinjitzu's theme is Fire vs Ice, this season, and the next installments theme is Old vs New.
  • Cartoon Network uploaded a clip from the first episode on their YouTube channel on February 21, 2020 titled "Cyrus Borg's Brother | Ninjago | Cartoon Network." (or just "Cyrus Borg's Brother" for short)
  • This season has the first flashback episode since Season 19 Episode 7: "Deserted," being Season 21 Episode 5: "Multiple Dimensions."
  • This season continues the trend of double-length or two-part specials that has continued since Season 18.
  • It takes place exactly 32 days (1 month and 1 day) after Season 20, confirmed in "The Colorful Arena"
  • The last two episodes of this season air as a two-part special called "The Future."
  • "The Origin" ends the arc where the ninja are stuck in Rust Disorder, but begins a new arc.

Filler Episode(s)

  • "Just Keep Jumping" focuses on Alerob and the sons of the DSM jumping through the multiverse, without having control of their university powers.

Focus Characters

  • Jay is the focus ninja of this season.
    • He was the focus of episode 1 along with nya, and played a major role in episode 2 and 9/10.
      • In Episode 1, him and Nya were the focus because of their arc while finding Kai at the museum of history and recognizing William Hardrock.
      • In Episode 2, his reaction to the board game was a major part of the episode.
      • In Episodes 9 and 10, he had a major role when he went in front of the fortrex to attract the Nexo Knight's attention.
  • Nya plays a very major role in this season.
    • She was the focus of Episode 1 along with Jay.
      • In Episode 1, her and Jay were the focus; they developed 2 arcs in that episode (listed above)
  • Cole plays a medium role in this season.
    • He is the focus ninja of episode 4, and has some focus moments in Episode 7.
      • Him winning the Colorful Blade in the Colorful Arena was the most important part of the fourth episode.
      • In Episode 7 his idea for Kai to use his gel to destroy the rust was a major part of the episode.
  • Kai plays a minor role in this season.
    • He has some focus moments in episode 7 when he used his hair gel to get the ninja out of the rustic cell.
  • Zane plays the smallest role in this season.
    • He has a focus moment in episode 1 at the start while calling Cyrus Borg.
    • In Episode 7, him getting Orion's staff and destroying Rust Disorder was the most important part of the plot.
  • Master Wu is a very minor character in this season.


  • William Hardrock, who is the Rust King, serves as the main antagonist of this season.
  • The Rustic Nindroids serve as the villainous faction of this season.
  • This is the only season with no secondary antagonist(s).

Ninja Suits

These are the suits for the ninja in this season. ALL CREDIT TO G-FROST AS HE MADE THESE SUITS.

Rustic Ninja

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