Kai, Ninja of Fire

"No. There's only one green ninja. This is your fight."

— Kai

Kai
Information
Affiliation	Ninja
Favorite Weapon	Sword of Fire
Element	Fire
First Appearance	Way of the Ninja 2258 Ninja Ambush
Status	Alive
Voice Actor	Vincent Tong

Kai is a major protagonist in LEGO Ninjago: Masters of Spinjitzu. He is the Red Ninja of Fire, and Nya is his younger sister. He and his teammates were chosen to protect the Green Ninja. He was the last Ninja to join the team, and the last to unlock his True Potential.

Kai's Early Life

Kai was born in Ignacia, the first son of a blacksmith who owned the Four Weapons shop. He and his younger sister Nya were raised in their father's craft. When his father died, Kai took it upon himself to keep the family business going, vowing to surpass his father's smithing skills.

Appearance

Typically preferring red attire, Kai has brown, spiky hair. He is often seen with a focused expression on his battle-scarred face, a slight notch visible on his left eyebrow.

Personality

Fittingly for his elemental affinity, Kai is very hotheaded, prone to taking action before he thinks things through. He is capable of making careful observations when the need arises, but his emotions often override his caution. His single-mindedness made interaction with his teammates difficult at first (especially due to his worry about Nya), but he eventually learned to work with the other Ninja. He can be arrogant at times, insisting that he is better than his peers and growing depressed when he seems to be lagging behind their training.

Kai also has something of a stubborn side, believing that he is in the right until overwhelming evidence to the contrary is presented. This is especially pronounced during Lord Garmadon's stay on the Destiny's Bounty; Kai repeatedly accused the four-armed villain of treachery or plotting despite Garmadon's insistence that saving Lloyd was his primary concern at the time. On the other hand, Kai's stubborn streak lends him incredible determination that allows him to bolster the team's spirit in the face of impossible odds.

The most prevalent facet of Kai's personality is his dedication to people he cares about - if someone can earn his friendship, he will stop at nothing to protect them. Much of his stubbornness and recklessness are due to his desire to help his loved ones, either directly or by becoming strong enough to defeat anyone who might threaten them with their plans. In turn, his friends and family work to balance out Kai's more extreme traits, causing him to become a levelheaded mentor for Lloyd by the time he and his comrades begin training the Green Ninja.

Weapons

Kai favors swords in combat, taking up a curved silver blade against the Skulkin when they attacked his shop. He used the Sword of Fire as his primary weapon until it was lost, and then switched to wielding regular katanas. He eventually gained an Elemental Blade that allowed him to harness his fire abilities to an even greater degree.

Trivia

• Kai is the last Ninja to join the team, the last to claim his Golden Weapon, and the last to unlock his True Potential. On the other hand, he was the first Ninja introduced in the series and the first to befriend his respective dragon.
• He appears to have a fear of Christmas-related themes, as shown in "Can of Worms," when the Venomari's venom causes him to see things like gingerbread men.
• Of all the ninja, he seems to care about Lloyd the most.
• For the first two months of his life his parents called him Ash.
• Kai once by accident forged a weapon called a 'Swingana' … Part yo-yo part sword. It was not a big success.
• When Kai uses his elemental power in a vehicle, it gets powered up and engulfed in flames … which is why flying a hang glider is a bad idea.
• Once Kai singed off his eyebrows with the sword of fire. But no one noticed because he painted the back on with a black marker.
• When Kai's sister Nya was a baby, he used to juggle hammers to entertain her. When he dropped one on his foot she laughed the hardest.