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Moviemagic2.png "You just have to look at it from a different point of view."

This article is about a subject that is canon to the storyline of Warner Bros' The LEGO Movie franchise.

“Hey, give me a hug, man. Give me a birthday hug!”
— Kai to Lloyd

Kai is the Fire Ninja, and one of the six Ninja trained by Master Wu. He is Nya's brother. He drove the Fire Mech.


The LEGO Ninjago Movie


Kai looks fairly similar to his TV show counterpart, but the main difference is his attitude. He still has his signature hair, just a bit more full and slightly taller. He has a new red ninja gi, somewhat similar to his old one, with a few improvements. His scar is on the other eye and he sports a bandage close to his hairline near his eyebrow opposite to where his scar is.


Kai's attitude is more serious, like Cole in the TV show. Despite this, he is very compassionate and approachable, as he is "always ready with a hug." Much like his own TV show counterpart, Kai is possibly impulsive, enjoys fighting enemies, and is loyal and protective of those he cares about, especially his teammates. Unlike his TV counterpart (besides the alternate face on his figurine), he seems to be curious or perhaps more sassy and energetic. He also appears to enjoy describing things with a variety of onomatopoeia.

Official descriptions

Kai: Master of Fire

This ninja is fiercely loyal and protective when it comes to his friends, like Lloyd, and his sister, Nya. Outgoing and enthusiastic, he is often ready with a hug. He might lack patience with some of Master Wu’s instructions, like trying to produce a flame by rubbing two sticks together, but Kai really gets fired up when there are bad guys to fight.[1]

Meet Kai Kendo

Spinjitzu training with Kendo gear is all part of being a ninja. After all, if you want to be a master of fire you have be prepared to take some hits.[2]

Weapons and Abilities

Kai wields a pair of katanas in the trailers, but he may be skillful with other weapons, though these are his favorite weapons.

He and the other Ninja have Elemental Powers like their TV show counterparts, allowing him to create and manipulate fire. As seen in the trailers, Kai's vehicle has weapons that are fire-based like the flamethrower in his mech. Kai was also able to create huge smokescreens to block his enemies’ sight with his fire.

Like most of the other Ninja, he is a master builder.




Video games


  • His vehicle is a giant humanoid mech, which has a flamethrower weapon on its arm.
  • Kai in his Ninja gi is the easiest to get out of all the movie Ninjas', appearing in a total of eight sets.
  • His main weapon is a pair of Katanas.
    • It is unknown why they were shown with weapons in the commercials. They only used their elemental abilities and their mechs to fight, not once touching their signature weapons.
  • He has the gunmetal gray armor in the sets, similar to that of his Skybound variant the only difference being the hue.
  • His casual outfit is by far the hardest to obtain out of the ninja since it is only available in one set, 70620 Ninjago City, which is very expensive, as well as retired.
  • His Swedish voice actor Adam Portnoff also voices him in the real show and has since Season 7: The Hands of Time.
  • He briefly had The Joker's hair from The Lego Batman Movie when they were riding their makeshift helicopter.



Promotional media

In The LEGO Ninjago Movie

In The LEGO Ninjago Movie Videogame


The LEGO Ninjago Movie characters

Secret Ninja Force

Master Wu · Lloyd Garmadon · Kai · Nya · Jay · Cole · Zane · Fuchsia Ninja
Allies: Koko
Animals: Meowthra

Shark Army

Leader: Lord Garmadon
General #1 · General Omar · Angler · Angler Goon · Charlie · Crusty · Four Eyes · Jelly · Great White · Hammer Head · Mike the Spike · Octopus · Private Puffer · Puffer · Shark Army Gunner · Shark Army Thug
Lost Generals
GPL Tech: Asimov · IT Bat Nerd · Steve · Terri

Ninjago City residents

Ed · Edna · Chad · Chan Kong-Sang · Gong & Guitar Rocker · Ham · Lauren · Maggie · Ms. Laudita · Nancy · Nomis · N-POP Girl · Sushi Chef · Takuma · Zane's mother


Snake Army: General Shen · Captain Oroku


Mr. Liu


Jim Croce · Wu and Garmadon's parents