Unleash the legendary Fire Knight with the LEGO NINJAGO Fire Knight Mech (71846) for teens, ages 14 and up. Builders construct an imposing armored warrior that rises from the waves to confront a tentacled sea monster in a scene straight from NINJAGO Legends Monstrosity. Teens can pose the mech and sea monster, place Kai with his magical sword inside the mech's chest chamber, and have the included fisherman witness the battle from his tiny boat. Once completed, this building toy transforms into room decor for avid NINJAGO fans. A cool gift idea for teenager boys and girls who love model building sets and NINJAGO. For an immersive building experience, the LEGO Builder app includes intuitive 3D instructions and more. Contains 996 pieces.

  • NINJAGO mech model - Older NINJAGO fans can add to their collection of LEGO NINJAGO models with this highly detailed The Fire Knight Mech
  • Ninja display set - This dramatic scene depicting The Fire Knight Mech with a cape and spear locked in a battle with an ancient monster emerging from the sea can be displayed in your room
  • Interactive model - Ninja fans can remove the model from its base to stage stories from the NINJAGO Legends Monstrosity series between the posable mech and a monster with movable tentacles
  • 2 NINJAGO minifigures - The model also includes ninja Kai with a blade, who can sit inside the mech's chest, and a fisherman with a paddle in a boat to inspire extra storytelling
  • Premium gift for NINJAGO fans - This model is a high-quality gift idea for fans of NINJAGO Legends Monstrosity who want to showcase their fandom
  • Additional Information

    • SKN: 21946
    • ID: 348C381A
    • UPC: 673419405171
    • MFR Number: 6526931
    • Ship to Quebec: Yes
    • Toysrus Recommended Age: 14 - 18 years
    • Language: Bilingual

    Assembly

    • Item Height: 3.70 inches
    • Item Length: 13.94 inches
    • Item Weight: 3.32 lbs
    • Item Width: 14.88 inches

    Batteries

    • Batteries Included: No
    • Batteries Required: No

    <!--begin-bvseo-reviews--> <!--begin-reviews--> <div id="bvseo-reviewsSection"> <div class="bvseo-review" itemprop="review" itemscope itemtype="https://schema.org/Review" data-reviewid="1201171057"> <span itemprop="reviewRating" itemscope itemtype="https://schema.org/Rating"> Rated <span itemprop="ratingValue">5</span> out of <span itemprop="bestRating">5</span> </span> by <span itemprop="author" itemtype="https://schema.org/Person" itemscope><span itemprop="name">Alex</span></span> from <span itemprop="name">I like it</span> <span itemprop="description">It's a good set, and I really enjoy all the details put into the design, and the display value is also really great.</span> <div class="bvseo-pubdate">Date published: 2025-09-14</div> <meta itemprop="datePublished" content="2025-09-14" /> </div> <div class="bvseo-review" itemprop="review" itemscope itemtype="https://schema.org/Review" data-reviewid="1199686793"> <span itemprop="reviewRating" itemscope itemtype="https://schema.org/Rating"> Rated <span itemprop="ratingValue">5</span> out of <span itemprop="bestRating">5</span> </span> by <span itemprop="author" itemtype="https://schema.org/Person" itemscope><span itemprop="name">aprillouise_4013</span></span> from <span itemprop="name">Awesome Lego set</span> <span itemprop="description">[This review was collected as part of a promotion.] Our family loves Legos so much. This was a super fun build. The directions are always so clear and easy to follow. The figure is giant and super cool!</span> <div class="bvseo-pubdate">Date published: 2025-08-20</div> <meta itemprop="datePublished" content="2025-08-20" /> </div> <div class="bvseo-review" itemprop="review" itemscope itemtype="https://schema.org/Review" data-reviewid="1199430649"> <span itemprop="reviewRating" itemscope itemtype="https://schema.org/Rating"> Rated <span itemprop="ratingValue">5</span> out of <span itemprop="bestRating">5</span> </span> by <span itemprop="author" itemtype="https://schema.org/Person" itemscope><span itemprop="name">Lyralo</span></span> from <span itemprop="name">Une am&eacute;lioration du set #70500</span> <span itemprop="description">Apr&egrave;s avoir quitt&eacute; le th&egrave;me pendant plusieurs ann&eacute;es, &ccedil;a fait bizarre d'acheter un set Ninjago &agrave; nouveau. L'exp&eacute;rience &eacute;tait tr&egrave;s plaisante, le mecha est magnifique et imposant, parfait pour exposer en addition avec sa base. Je trouve que la cape est assez dure &agrave; mettre en position, et que la mini-figurine de Kai et son &eacute;p&eacute;e n'ont pas vraiment de place pour &ecirc;tre expos&eacute;es. Le set est excellent, en esp&eacute;rant voir Lego nous donner plus de sets pour adultes de ce th&egrave;me.</span> <div class="bvseo-pubdate">Date published: 2025-08-16</div> <meta itemprop="datePublished" content="2025-08-16" /> </div> <div class="bvseo-review" itemprop="review" itemscope itemtype="https://schema.org/Review" data-reviewid="1198290040"> <span itemprop="reviewRating" itemscope itemtype="https://schema.org/Rating"> Rated <span itemprop="ratingValue">5</span> out of <span itemprop="bestRating">5</span> </span> by <span itemprop="author" itemtype="https://schema.org/Person" itemscope><span itemprop="name">chauh7_2199</span></span> from <span itemprop="name">Recommend</span> <span itemprop="description">[This review was collected as part of a promotion.] It was a challenging for younger Lego fans. But will be fun if we build together. As is usual with Lego, the instructions are clear, there were no missing pieces and the quality was superb. Highly recommended.</span> <div class="bvseo-pubdate">Date published: 2025-07-29</div> <meta itemprop="datePublished" content="2025-07-29" /> </div> <div class="bvseo-review" itemprop="review" itemscope itemtype="https://schema.org/Review" data-reviewid="1197817751"> <span itemprop="reviewRating" itemscope itemtype="https://schema.org/Rating"> Rated <span itemprop="ratingValue">5</span> out of <span itemprop="bestRating">5</span> </span> by <span itemprop="author" itemtype="https://schema.org/Person" itemscope><span itemprop="name">tepsilau_6896</span></span> from <span itemprop="name">The best Ninjago set</span> <span itemprop="description">[This review was collected as part of a promotion.] It's really awesome and so fun to put together! I think is the best Ninjago yet! Also it's HUGE. I absolutely love it and so glad I got to experience it, I never would have thought of purchasing a Ninjago set but excited to state I was wrong.</span> <div class="bvseo-pubdate">Date published: 2025-07-23</div> <meta itemprop="datePublished" content="2025-07-23" /> </div> <div class="bvseo-review" itemprop="review" itemscope itemtype="https://schema.org/Review" data-reviewid="1197505212"> <span itemprop="reviewRating" itemscope itemtype="https://schema.org/Rating"> Rated <span itemprop="ratingValue">5</span> out of <span itemprop="bestRating">5</span> </span> by <span itemprop="author" itemtype="https://schema.org/Person" itemscope><span itemprop="name">linneam_4484</span></span> from <span itemprop="name">Very Detailed</span> <span itemprop="description">[This review was collected as part of a promotion.] Wow, this is a very detailed Lego set! Lots of pieces. It isn&rsquo;t super difficult to do, but it does have some smaller details that require concentrating. Turned out amazing and was a great activity to do!</span> <div class="bvseo-pubdate">Date published: 2025-07-18</div> <meta itemprop="datePublished" content="2025-07-18" /> </div> <div class="bvseo-review" itemprop="review" itemscope itemtype="https://schema.org/Review" data-reviewid="1197249590"> <span itemprop="reviewRating" itemscope itemtype="https://schema.org/Rating"> Rated <span itemprop="ratingValue">5</span> out of <span itemprop="bestRating">5</span> </span> by <span itemprop="author" itemtype="https://schema.org/Person" itemscope><span itemprop="name">saras0bb1_2761</span></span> from <span itemprop="name">Amazing Mech!!</span> <span itemprop="description">[This review was collected as part of a promotion.] This Lego Fire Knight Mech set is AMAZING! The packaging has a really special feel to it with being from the legends series. The set comes with everything you need to build this awesome mech. My teenager loved building it and is proud to display the set. Great value for the money.</span> <div class="bvseo-pubdate">Date published: 2025-07-14</div> <meta itemprop="datePublished" content="2025-07-14" /> </div> <div class="bvseo-review" itemprop="review" itemscope itemtype="https://schema.org/Review" data-reviewid="1196909028"> <span itemprop="reviewRating" itemscope itemtype="https://schema.org/Rating"> Rated <span itemprop="ratingValue">5</span> out of <span itemprop="bestRating">5</span> </span> by <span itemprop="author" itemtype="https://schema.org/Person" itemscope><span itemprop="name">kitsu021_6428</span></span> from <span itemprop="name">On a ador&eacute;</span> <span itemprop="description">[Cet avis a &eacute;t&eacute; recueilli en r&eacute;ponse &agrave; une offre.] Magnifique pi&egrave;ce de chez Lego, assez long &agrave; construire mais instructions super clair, un vrai moment de partage avec les enfants. Un r&eacute;sultat parfait presque une &oelig;uvre d'art !</span> <div class="bvseo-pubdate">Date published: 2025-07-11</div> <meta itemprop="datePublished" content="2025-07-11" /> </div> </div> <script type="text/javascript"> if (document.getElementById('bvseo-reviewsSection')) { document.getElementById('bvseo-reviewsSection').style.display = 'none'; } </script> <!--end-reviews--> <!--begin-pagination--> <ul id="bvseo-paginationSection"> <li class="bvseo-paginationItem"><a class="bvseo-paginationLink" href="https://www.toysrus.ca/en/LEGO-NINJAGO-The-Fire-Knight-Mech-Building-Toy---Model-Building-Kit-for-Teens--Ages-14----71846/348C381A.html?bvstate=pg:2/ct:r">LEGO NINJAGO The Fire Knight Mech Building Toy - Model Building Kit for Teens, Ages 14+ - 71846 Reviews - page 2</a></li> </ul> <!--end-pagination--> <ul id="BVSEO_meta" style="display:none!important"> <li data-bvseo="bvDateModified">y_2025, m_9, d_18, h_6</li> <li data-bvseo="ps">bvseo_bulk, prod_bvrr, vn_bulk_3.0.42</li> <li data-bvseo="cp">cp_1, bvpage1</li> <li data-bvseo="co">co_hasreviews, tv_0, tr_31</li> <li data-bvseo="cf">loc_en_CA, sid_348C381A, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]</li> <li data-bvseo="diagnostics">clientName_toysrus-ca</li> </ul> <!--end-bvseo-reviews--> <ul id="BVSEOSDK_meta" style="display: none !important;"> <li data-bvseo="sdk">bvseo_sdk, dw_cartridge, 18.2.0, p_sdk_3.2.0</li> <li data-bvseo="sp_mt">CLOUD, getReviews, 8ms</li> <li data-bvseo="ct_st">reviews, product</li> </ul>
    LEGO NINJAGO The Fire Knight Mech Building Toy - Model Building Kit for Teens, Ages 14+ - 71846 is rated 5.0 out of 5 by 31.
    • y_2025, m_9, d_18, h_6
    • bvseo_bulk, prod_bvrr, vn_bulk_3.0.42
    • cp_1, bvpage1
    • co_hasreviews, tv_0, tr_31
    • loc_en_CA, sid_348C381A, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_toysrus-ca
    • bvseo_sdk, dw_cartridge, 18.2.0, p_sdk_3.2.0
    • CLOUD, getAggregateRating, 37ms
    • reviews, product
    <ul id="BVSEOSDK_meta" style="display: none !important;"> <li data-bvseo="sdk">bvseo_sdk, dw_cartridge, 18.2.0, p_sdk_3.2.0</li> <li data-bvseo="sp_mt">CLOUD, getContent, 14ms</li> <li data-bvseo="ct_st">questions, product</li> <li data-bvseo="ms">bvseo-msg: Unsuccessful GET. status = 'ERROR', msg = 'Not Found.';</li> </ul>
    LEGO

    LEGO NINJAGO The Fire Knight Mech Building Toy - Model Building Kit for Teens, Ages 14+ - 71846

    SKN: 21946

    LEGO NINJAGO The Fire Knight Mech Building Toy - Model Building Kit for Teens, Ages 14+ - 71846 is rated 5.0 out of 5 by 31.
    • y_2025, m_9, d_18, h_6
    • bvseo_bulk, prod_bvrr, vn_bulk_3.0.42
    • cp_1, bvpage1
    • co_hasreviews, tv_0, tr_31
    • loc_en_CA, sid_348C381A, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_toysrus-ca
    • bvseo_sdk, dw_cartridge, 18.2.0, p_sdk_3.2.0
    • CLOUD, getAggregateRating, 37ms
    • reviews, product
    Website Price: $164.99
    • Out of Stock

    Free Store Pickup

    Home Delivery:

    Delivery postal code: L4K 5R5
    Get it Fast

    Please select a store before adding to Cart

    This item is not in stock at #, please select another location

    This item is not in stock at #, please select another location

    Currently Credit Card is the only form of payment supported for pre-orders.

    Ship to an Address
    Enter postal code to see availability
    Sorry, this item is currently not available for your ship to location.

    Currently Credit Card is the only form of payment supported for pre-orders.

    Nearest Stores

    Selected Store

    Free Shipping. Shop Toys”R”Us, Babies”R”Us & The HMV Shop in 1 easy checkout!
    Our recommended Age: 14 - 18 years

    Share: