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$49.99
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WARNING: choking hazard - toy contains a small ball. Not for children under 3 yrs.
WARNING: choking hazard - small parts. Not for children under 3 yrs.
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About this item
Highlights
- AWAKEN THE MASTER DRAGON – The LEGO NINJAGO Rontu the Master Dragon (71842) building set lets children 7 years old and up command the legendary beast from NINJAGO Dragons Rising Season 3 with ancient power and hidden secrets
- 4 LEGO NINJAGO MINIFIGURES – Young builders can stage epic aerial battles with ninja hero minifigures of Lloyd, Sora, and Wyldfyre against the villainous Master of Misfortune Zarkt minifigure, all equipped with signature ninja weapons
- LEGENDARY DRAGON POWER – Kids can construct Rontu with a fully posable tail, head, jaw, legs, and wings, plus dual wing-mounted stud shooters and two riding positions for epic dragon flight adventures
- UNLOCK ANCIENT SECRETS – Fans can discover the mysterious brick-built shrine that holds hidden messages, which Lloyd can reveal using his special translucent reveal blade for added mystery and discovery
- GIFT FOR BOYS & GIRLS – Makes a cool birthday or holiday present for kids who love dragon toys and legendary adventures, and fans of the hit NINJAGO Dragons Rising TV show
- INTUITIVE BUILDING EXPERIENCE – The LEGO Builder app guides kids through easy step-by-step instructions with 3D viewing tools for enhanced dragon construction adventures
- DIMENSIONS – Rontu the Master Dragon stands over 5 in. (13 cm) tall and contains 381 pieces
Description
Awaken an ancient and legendary force! The LEGO NINJAGO Rontu the Master Dragon (71842) building set brings the mightiest dragon from NINJAGO Dragons Rising Season 3 to boys and girls 7 years old and up. This magnificent beast features incredible posable action with a fully articulated tail, head, jaw, legs, and wings, plus dual stud shooters beneath powerful wings for aerial combat. Young ninja masters can position the Lloyd, Sora, and Wyldfyre minifigures on Rontu's back in two different riding positions as they soar into epic battles against the Master of Misfortune, Zarkt minifigure. After building, young ones can explore the mysterious mini shrine and discover hidden secrets that only Lloyd can unlock with his special translucent reveal blade. Each character comes equipped with signature ninja accessories for thrilling good versus evil showdowns across the NINJAGO Dragons Rising universe. Children will love recreating their favorite TV show moments as Rontu spreads his massive wings, or inventing entirely new quests as the mighty dragon protects NINJAGO's most sacred mysteries. Perfect for solo pretend play sessions or sharing epic battles with friends, this set makes an ideal birthday or holiday gift for NINJAGO Dragons Rising fans and kids who love dragon toys. Combines with other LEGO NINJAGO sets (each set sold separately) for expanded dragon missions across the ninja realm. The LEGO Builder app guides young builders through intuitive step-by-step instructions with helpful 3D viewing tools. Contains 381 pieces.
Number of Pieces: 381
Suggested Age: 7 Years and Up
Model #: 71842
CPSC Choking Hazard Warnings: Choking_hazard_contains_small_ball, choking_hazard_small_parts
Educational Focus: Gross Motor Skills, Creativity, Fine Motor Skills, Sensory Development, Creative Thinking
Includes: Toy Building Components
Material: Plastic
Battery: No Battery Used
TCIN: 94152787
UPC: 673419405119
Item Number (DPCI): 204-00-1939
Origin: Made in the USA or Imported
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Shipping details
Estimated ship dimensions: 10.32 inches length x 7.49 inches width x 2.92 inches height
Estimated ship weight: 1.057 pounds
Return details
This item can be returned to any Target store or Target.com.
This item must be returned within 90 days of the date it was purchased in store, shipped, delivered by a Shipt shopper, or made ready for pickup.
See the return policy for complete information.
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4.4 out of 5 stars with 22 reviews
broad age appeal: 4 out of 5
ease of use: 5 out of 5
length of play: 5 out of 5
quality: 5 out of 5
value: 5 out of 5
100% would recommend
1 recommendations
5 out of 5 stars
4 January, 2026
originally posted on influenster.com
Excellent
[This review was collected as part of a promotion.] This LEGO Ninjago set is really fun and well made. My 6-year-old daughter built it completely by herself without any help, which shows how clear and easy the instructions are. The dragon looks great and is fun to play with. The set arrived on time for Christmas, and my daughter was very happy and excited when she received it. The quality of the lego is very good and clearly. I highly recommend this set. Great quality and perfect for kids!
5 out of 5 stars
21 December, 2025
originally posted on influenster.com
Lego black dragon
[This review was collected as part of a promotion.] A lovely little set. Ideal for the Dragon or Ninjago lover in the family. Lots of little details that make lego just that little bit special. I would say this was a quick build set. For fast builders 30min. The only trouble I have now is where to put them all. I do like more of the packaging is starting to go towards paper packaging. Hopefully the future sets will continue in this way.
5 out of 5 stars
Thumbs up graphic, would recommend
13 December, 2025Verified purchase
Great Lego set!
My daughter is so excited to have a pink and purple dragon!!!
5 out of 5 stars
12 December, 2025
originally posted on influenster.com
Great quality, beautiful colours and fantastic min
[This review was collected as part of a promotion.] We had so much fun building this LEGO dragon set! The colours are stunning, the details are impressive, and the dragon looks powerful and dynamic once built. I really love the articulated wings, head and legs - it makes playtime and display equally exciting. The minifigures add great storytelling potential, and my child immediately started creating scenes and battles. The build itself was engaging, not boring, and the instructions were clear and easy to follow. This set is perfect for kids who love fantasy and dragons, but honestly it also looks amazing as a display piece. A great mix of creativity, play and design - exactly what LEGO does best.
5 out of 5 stars
12 December, 2025
originally posted on influenster.com
Love it
[This review was collected as part of a promotion.] This Lego ninja go set is so great. Very nice finish of the blocks. Really top quality. Perfect size to keep it on the desk shelf. Helps my kid with imagination and learning about dragons. Really good fun.
5 out of 5 stars
11 December, 2025
originally posted on LEGO
Artist
I’m artistic, craftsman, creative builder, smart and collector
5 out of 5 stars
11 December, 2025
originally posted on influenster.com
Love the set
[This review was collected as part of a promotion.] Lego Rontu the Master Dragon is an amazing set from Lego. It is perfect to detail with all clear instructions. I love the way they divided the amount in each set. 3 sets of bag to make in the end with stickers to attach. Lots of fun time together with my kids.
5 out of 5 stars
11 December, 2025
originally posted on influenster.com
Great product
[This review was collected as part of a promotion.] We have received this and my little one is going to be so happy Christmas morning I am keeping this as a preset it’s really good looks great when built and has a very lightweight to it so it’s perfect for him he loves Lego sets
5 out of 5 stars
7 December, 2025Verified purchase
(no review title)
Great!
5 out of 5 stars
7 August, 2025
originally posted on LEGO
Value
Great value, Zarkt minifig is rare and expensive and worth buying the set just for him. 4 minifigs in a set like this is great and the dragon build is quite good looks nice
5 out of 5 stars
23 July, 2025
originally posted on LEGO
Ninjago Rontu Master Dragon
A nice set, and a good display piece for my sons Dragon Collection
4 out of 5 stars
22 July, 2025
originally posted on LEGO
Rontu the master dragon
It is a great set for the price and really enjoyed building as the dragon has different parts. Sadly the horns and the head Sometimes when playing Can fall off easily As they're not connected very well. Zarkt... would be great if there was another character like one of his minions.
1 out of 5 stars
1 June, 2025
originally posted on LEGO
DO NOT PURCHASE
The open studs makes it look unfinished and the accuracy from the show is not their the now should be moulded röntgen is ment to have a serpent like body which is not evident in this build and the price is not what you should pay for this set