Kai - Rebooted with Stone Armor
njo091 · Ninjago
Rebooted · 2014, debuting in early waves based on the third season of the Masters of Spinjitzu TV series.

Figure ID
njo091
Theme
Ninjago
Year Released
2014, debuting in early waves based on the third season of the Masters of Spinjitzu TV series.
Rarity
Uncommon. While not exclusive to a single high-priced set, this specific 'Stone Armor' variant was shorter-lived than his standard Rebooted outfit.
Head
Yellow head with dual-sided printing: one side features a determined smirk, the other a battle-ready angry expression with furrowed brows. It is covered by a red Rebooted-style ninja wrap (mask).
Torso
Black torso featuring dark red and gold armor printing that mimics the 'Stone Armor' from the show. It includes a silver emblem in the center and flame-like detailing. The arms are red with red hands.
Legs
Black legs with printing on the hips and upper legs that continues the gold and dark red flame/armor pattern from the torso. No printing on the lower shins or feet.
Accessories
Typically packaged with a Technoblade (red) or a silver katana. The figure in the image is missing its handheld accessories.
Color Scheme
A striking contrast of Red and Black, accented with Gold and Silver printing. This palette represents Kai's elemental fire power infused with the ancient Stone Armor aesthetics.
Printing Details
High-quality pad printing with excellent alignment. The gold ink has a slight metallic sheen. Detail extends to the back of the torso with a continuation of the harness and armor plates.
Variants
Standard Rebooted Kai (njo083) features a red torso; this Stone Armor version (njo091) is the darker, more armored variant. There is also a Battle-Scarred variant found in specific books/polybags.
Condition Notes
The red wrap (mask) is prone to minor paint rubbing on the top. Check for 'neck cracks' on the black torso, which is a common stress point for 2014-era dark plastic.
Estimated Value
Used Complete: $5.00 - $8.00 USD; New/Sealed: $12.00 - $15.00 USD. The value has remained relatively stable due to the high volume of Ninjago collectors.
Price (New)
Originally available in sets ranging from $19.99 (70721 Kai Fighter) to $69.99 (70724 NinjaCopter).
Compatible Sets
70721 Kai Fighter (2014), 70724 NinjaCopter (2014), and 70728 Battle for Ninjago City (2014).
Character Background
Kai is the Elemental Master of Fire. In the Rebooted season, the Ninja used Stone Armor pieces (forged from the remains of the Golden Peaks) to protect themselves against the Overlord's digital corruption.
Design Notes
The Rebooted era marked a shift toward more 'tech-ninja' aesthetics. The Stone Armor represents a hybrid of traditional medieval-style plating and futuristic Ninjago design.
Similar Minifigures
njo083 Rebooted Kai, njo088 Stone Armor Lloyd, and njo095 Stone Armor Jay.
Collectibility
High for Ninjago completionists. While not the most expensive Kai, it is essential for finishing the 'Stone Armor' team lineup which remains a fan-favorite sub-group.
History
Followed the 2011-2012 Kimono and DX eras. This figure represented the first major redesign of the ninja after LEGO briefly considered ending the theme in 2013.
Interesting Facts
The 'Rebooted' sets were released after massive fan demand brought Ninjago back from what was supposed to be its final season (Legacy of the Green Ninja).
Display Suggestions
Best displayed alongside the other three ninjas in their respective Stone Armors on a tiered stand or within the 70728 Battle for Ninjago City temple set.
Modification Potential
The black stone armor torso is popular for MOC (My Own Creation) fantasy knights or dark samurai due to its non-specific but detailed aesthetic.
Overall Assessment
A solid, well-designed figure that captures a pivotal moment in Ninjago history. It is a 'buy' for any collector of the Masters of Spinjitzu series.