Ninjago: Secrets of the Forbidden Spinjitzu

• Sam Vincent as Lloyd Garmadon, the Green Ninja[4]
• Vincent Tong as Kai, the red ninja, Elemental Master of Fire and Nya's Brother.[5]
• Michael Adamthwaite as Jay, the blue ninja, Elemental Master of Lightning, and Nya's Yang/Boyfriend.[6]
• Brent Miller as Zane, the white ninja and Elemental Master of Ice[7]
• Kirby Morrow as Cole, the black ninja and Elemental Master of Earth[8]
• Kelly Metzger as Nya, the Elemental Master of Water, Kai's sister, and Jay's Yin/Girlfriend.[9]
• Paul Dobson as Sensei Wu, the wise teacher of the ninja[10]
• Jennifer Hayward as P.I.X.A.L. a female nindroid[11]
• Pauline Newstone as Aspheera[12]
• Tabith St Germain as Akita[13]

• Brian Drummond as Char[14]
• Michael Kopsa as Vex[15]
• Michael Donovan as Police Commissioner[16]
• Kelly Sheridan as Gayle Gossip[17]
• Paul Dobson as Warden Noble[18]
• Ian James Corlett as Clutch Powers[19]
• Gary Chalk as Killow/Director[20]
• Paul Dobson as Cecil Putnam[21]
• Michael Adamthwaite as Smythe[22]
• Brian Drummond as Shippleton[14]
• Sam Vincent as Dwayne[23]
• Brynna Drummond as Antonia[24]
• David Raynolds as Nelson[25]
• Ian Hanlin as Dan Vaapit[26]
• Alan Marriott as Dareth[27]
• Bill Newton as Fred Finely[28]
• Ian James Corlett as Scales[29]
• Paul Dobson as Acidicus[30]
• Jim Conrad as the First Spinjitzu Master[31]
• Madyx Whiteway as Young Wu[32]
• Dean Petriw as Young Garmadon[33]
• Michael Antonakos as The Mechanic[34]
• Adrian Petriw as Fugi Dove[35]
• Sharon Alexander as Ultra Violet[36]

• Cole Howard as Kataru[37]
• Michael Dobson as King Mambo[38]
• Ashleigh Ball as Young Aspheera[39]
• Patty Drake as Sorla[40]
• Brian Drummond as Grimfax[14]
• Brian Drummond as Krag[14]

From the eleventh season, the animation for the series was produced in Canada at WildBrain Studios, whereas it had previously been animated by Wil Film ApS in Denmark.[41][42]

Secrets of the Forbidden Spinjitzu was the first season in the Ninjago series to mix animation styles between a 2D and 3D animation format. The season incorporates non-minifigure 2D animated anime-style segments in the show. These changes were announced at the San Diego Comic Con 2019 by Jason Cosler and Robert May of The Lego Group. Executive Producer Tommy Andreasen confirmed the changes on Twitter, stating, "to clarify, the Ninjago series will still be 3d mini-fig based…but once in a while, if the story motivates it, we will be doing episodes in different styles. Ninjago is playground for creativity and fun."[2]

The eleventh season marked significant changes in the format of the show. The Masters of Spinjitzu subtitle was dropped, so that the series would be simply titled Ninjago. The new format also included a change in the long-standing episode runtime from 22 minutes to 11 minutes. The reduction to 11 minutes resulted in a brisker pace to the storyline. Bragi Schut continued as the writer for the series, having replaced the original writers Dan and Kevin Hageman in the tenth season.[43] With the announcement of this change, The Lego Group stated, "The upcoming TV season will have 30 episodes of 11 minutes each, making it the ninjas' biggest adventure yet. The season picks up shortly after 'March of the Oni' and remains true to the story canon and the characters. This is not a reboot, nor a spin-off, but merely a brand-new adventure. A fresh beginning helps new viewers to watch and discover the magic of Ninjago without knowing much about the 100 episodes prior."[44] The announcement further explained, "Whereas the first chapter was heavily tied to a 22 min serialized TV format, this next chapter will not be confined to a specific format. The 11 min episodes allow for new and creative possibilities for the storytelling. Also, with the growth of exciting story formats like comics, in-world books etc. that are extending the Ninjago universe, this new chapter will be more exploratory and creative."[43] The change in the episode runtime was a particular cause of concern with fans of the show. Co-creator Tommy Andreasen explained that the 11 minute format, "was a way for the broadcasters to make it easier to programme". He also commented, "Once you're working with 11 minutes it's not just the same idea stretched over two 11s. Now it's a new idea in every episode, and it really makes you risky and fresh - and able to tell stories very efficiently...If there's something I would like Ninjago TV show to be, it's this creative playground, where you should never know exactly what you can expect".[45]

After defeating the Oni, the ninja have become lazy and out of shape. They decide to search for a new threat to face, but Ninjago is at peace.[N 1] They find their next quest when Clutch Powers discovers an ancient pyramid.[N 2] The tomb is a prison for a snake queen named Aspheera, who is unwittingly released by the ninja. She steals Kai's powers and uses them to revive her army of Pyro Vipers, with the aim of conquering Ninjago and exacting revenge on the "Treacherous Deceiver".[N 3] The ninja are trapped in the pyramid, but rescued by P.I.X.A.L.[N 4] They learn about the Scrolls of Forbidden Spinjitzu, which grant the user great powers, but can also corrupt them.[N 5] Wu eventually admits that he is the "Treacherous Deceiver", and explains that he befriended Aspheera and taught her Spinjitzu, but she used it for evil by taking over the Serpentine.[N 6] As a result, Wu and Garmadon were forced to defeat Aspheera using Forbidden Spinjitzu and imprisoned her inside the pyramid.[N 7] After Aspheera steals one of the scrolls from the museum, the ninja go after the other at the Explorers Club, while Aspheera attacks the Monastery of Spinjitzu.[N 8] The ninja defeat Aspheera, but Zane is hit with the scroll's power and is transported to the Never-Realm.[N 9] Wu volunteers to rescue Zane, but the ninja overpower him and go instead, before Wu can warn them that there is no way to return.[N 10]

The ninja reach the Never-Realm and arrive at a village, where they meet the elder, Sorla and help the locals fend off the Blizzard Samurai, led by the Ice Emperor and his advisor, Vex.[N 11] The ninja believe that Zane was captured by the Ice Emperor and decide to stay at the village, where Kai attempts to regain his powers.[N 12] Cole leaves to find the Traveller's Tree to collect some leaves for the Traveller's Tea so that they can return home. He befriends Krag, the last surviving yeti, and Lloyd leaves to find Zane's mech.[N 13] Along the way, Lloyd befriends a Formling named Akita, who can transform into a wolf and wishes to exact revenge on the Ice Emperor for freezing her people.[N 14] Meanwhile, the village is attacked by the Ice Emperor's dragon Boreal, forcing the remaining ninja to flee and continue their journey. Lloyd and Akita are later attacked by Boreal, who kidnaps Lloyd and carries him to the Ice Emperor, who is revealed to be Zane.[N 15] After being transported to the Never-Realm decades into the past, he lost his memory and was manipulated by Vex, a Formling who wished to exact revenge on his people. Zane was led to believe he was the Ice Emperor and the two then dethroned the ruler of the realm, Grimfax. Zane used the Scroll of Forbidden Spinjitzu to corrupt Grimfax's warriors, turning them into the Blizzard Samurai.[N 16] Lloyd is locked in a cell and meets Akita's brother, Kataru. They form an alliance with Grimfax to dethrone Zane and liberate the Never-Realm.[N 17] Kai recovers his powers, destroying Boreal, and Zane recovers his memories after Vex attempts to kill Lloyd. Zane destroys his sceptre, which restores peace to the Never-Realm. Grimfax regains his throne, Vex is banished for his crimes, and the ninja return to Ninjago.[N 18]