

LEGO NINJAGO Rontu the Master Dragon Building Toy - Dragons Rising Model Building Kit for Boys & Girls, Ages 7+ - Kids Toy W/ 4 Ninja Minifigures & Dragon Figurine - Gift Idea for Birthdays - 71842
Key item features
- Master Dragon: The LEGO NINJAGO Rontu the Master Dragon (71842) set lets kids command the legendary beast from NINJAGO Dragons Rising Season 3.
- Ninja Minifigures: Includes minifigures of Lloyd, Sora, Wyldfyre, and the villainous Master of Misfortune Zarkt, all equipped with signature ninja weapons.
- Posable Dragon: Rontu features a fully posable tail, head, jaw, legs, and wings, plus dual wing-mounted stud shooters for epic aerial battles.
- Hidden Secrets: Discover the mysterious brick-built shrine with hidden messages that Lloyd can reveal using his special translucent reveal blade.
- Gift Idea: Ideal for kids who love dragon toys and NINJAGO adventures, making it a perfect birthday or holiday present.
- Building Experience: The LEGO Builder app provides easy step-by-step instructions with 3D viewing tools for an enhanced building experience.
- Set Dimensions: Rontu the Master Dragon stands over 5 inches (13 cm) tall and the set contains 381 pieces.
Specs
- BrandLEGO
- ThemeLEGO Ninjago
- Piece count381
- Minimum recommended age7 years
- FeaturesCollectible
- Character groupLEGO Ninjago
How do you want your item?
About this item
Product details
- 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
Specifications
Brand
Theme
Piece count
Minimum recommended age
Warranty
Warranty information
Warnings
CHOKING HAZARD - Children Under 3
Similar items you might like
Based on what customers bought
LEGO Star Wars Grogu’s Homestead Building Toy for Boys & Girls - The Mandalorian Pretend Play Set W/Sorgan Frog & Poseable Grogu Figures for Preschool Kids, Ages 4 - Gift Idea for Birthdays - 75443 $15.99 Was $19.99
SponsoredNow$1599current price Now $15.99, Was $19.99$19.99You save $4.00You save$4.00LEGO Star Wars Grogu’s Homestead Building Toy for Boys & Girls - The Mandalorian Pretend Play Set W/Sorgan Frog & Poseable Grogu Figures for Preschool Kids, Ages 4 - Gift Idea for Birthdays - 75443
294.9 out of 5 Stars. 29 reviewsSave withShipping, arrives tomorrowBest seller LEGO Star Wars: The Mandalorian Ambush on Mandalore Battle Pack, Building Toy with 4 Star Wars Minifigures, Collectible Brick Built Playset, Star Wars Gift Idea for Boys and Girls Ages 6 and Up, 75373 $16.99 Was $19.99
Best seller
SponsoredNow$1699current price Now $16.99, Was $19.99$19.99You save $3.00You save$3.00LEGO Star Wars: The Mandalorian Ambush on Mandalore Battle Pack, Building Toy with 4 Star Wars Minifigures, Collectible Brick Built Playset, Star Wars Gift Idea for Boys and Girls Ages 6 and Up, 75373
3134.7 out of 5 Stars. 313 reviewsSave withDelivery as soon as 1 hourShipping, arrives todayPickup as soon as 11am1K+ bought since yesterday LEGO Creator 3 in 1 Cute Hamster with a Flower - Building Toy for Girls & Boys, Ages 7 - Birthday Gift for Kids & Animal Lovers - Build a Hamster, Hedgehog or Eagle - 31376 $9.97
1K+ bought since yesterday
$997current price $9.97LEGO Creator 3 in 1 Cute Hamster with a Flower - Building Toy for Girls & Boys, Ages 7 - Birthday Gift for Kids & Animal Lovers - Build a Hamster, Hedgehog or Eagle - 31376
4494.7 out of 5 Stars. 449 reviewsBest seller LEGO NINJAGO Kai's Motorcycle Speed Race Building Toy for Kids - Pretend Play Motorcycle Toy With 2 Minifigures - Building Blocks for Boys & Girls, Ages 6 - Gift Idea for Birthdays - 71838 $9.97
Best seller
$997current price $9.97LEGO NINJAGO Kai's Motorcycle Speed Race Building Toy for Kids - Pretend Play Motorcycle Toy With 2 Minifigures - Building Blocks for Boys & Girls, Ages 6 - Gift Idea for Birthdays - 71838
2064.6 out of 5 Stars. 206 reviewsBest seller LEGO Minifigures Series 29 6 Pack - Mystery Box Multipack - Birthday Party Favors for Boys & Girls, Ages 6 - Goodie Bag Stuffers for Kids - 66814 $39.99
Best seller
$3999current price $39.99LEGO Minifigures Series 29 6 Pack - Mystery Box Multipack - Birthday Party Favors for Boys & Girls, Ages 6 - Goodie Bag Stuffers for Kids - 66814
614.4 out of 5 Stars. 61 reviewsBest seller LEGO NINJAGO Zane's Battle Suit Mech Ninja Toy - Building Toy for Pretend Play for Kids, Boys and Girls, Ages 6 - with 3 Minifigures - Gift Idea for Birthdays - 71827 $9.86
Best seller
$986current price $9.86LEGO NINJAGO Zane's Battle Suit Mech Ninja Toy - Building Toy for Pretend Play for Kids, Boys and Girls, Ages 6 - with 3 Minifigures - Gift Idea for Birthdays - 71827
3704.7 out of 5 Stars. 370 reviews100+ bought since yesterday LEGO Star Wars Clone Shock Trooper Mech Building Toy for Boys & Girls - Poseable Star Wars Figure W/Pretend Play Blaster & Stud Shooter for Kids & Fans, Ages 6 - Gift Idea for Birthdays - 75448 $11.99 Was $14.97
100+ bought since yesterday
SponsoredNow$1199current price Now $11.99, Was $14.97$14.97You save $2.98You save$2.98LEGO Star Wars Clone Shock Trooper Mech Building Toy for Boys & Girls - Poseable Star Wars Figure W/Pretend Play Blaster & Stud Shooter for Kids & Fans, Ages 6 - Gift Idea for Birthdays - 75448
734.9 out of 5 Stars. 73 reviewsSave withDelivery as soon as 1 hourShipping, arrives todayPickup as soon as 11am100+ bought since yesterday LEGO Star Wars: The Clone Wars Ahsoka's Jedi Interceptor Spaceship Building Toy - Kids Star Wars Toy for Boys and Girls, Ages 8 - Birthday Gift Idea for Star Wars Fans - 75401 $44.96
100+ bought since yesterday
Sponsored$4496current price $44.96LEGO Star Wars: The Clone Wars Ahsoka's Jedi Interceptor Spaceship Building Toy - Kids Star Wars Toy for Boys and Girls, Ages 8 - Birthday Gift Idea for Star Wars Fans - 75401
6024.3 out of 5 Stars. 602 reviewsSave withShipping, arrives todayBest seller LEGO Technic Ferrari FXX K Toy Car - Building Toy for Boys & Girls, Ages 10 - Birthday Gift - Race Car Model for Play & Display - 42212 $51.99 Was $64.99
Best seller
$5199current price $51.99, Was $64.99$64.99LEGO Technic Ferrari FXX K Toy Car - Building Toy for Boys & Girls, Ages 10 - Birthday Gift - Race Car Model for Play & Display - 42212
4964.7 out of 5 Stars. 496 reviewsBest seller LEGO Minecraft Steve’s Taiga Adventure Building Toy for Boys & Girls - Video Game Playset & Toy Figures for Kids, Ages 6 - W/2 Minifigures & 2 Pretend Play Animals - Gift Idea for Birthdays - 21583 $9.49
Best seller
$949current price $9.49LEGO Minecraft Steve’s Taiga Adventure Building Toy for Boys & Girls - Video Game Playset & Toy Figures for Kids, Ages 6 - W/2 Minifigures & 2 Pretend Play Animals - Gift Idea for Birthdays - 21583
1244.8 out of 5 Stars. 124 reviewsBest seller LEGO Star Wars Siege of Mandalore Battle Pack Building Toy for Boys & Girls - The Mandalorian Pretend Play Set W/4 Character Minifigures for Kids & Fans, Ages 6 - Gift Idea for Birthdays - 75449 $18.39 Was $22.99
Best seller
$1839current price $18.39, Was $22.99$22.99LEGO Star Wars Siege of Mandalore Battle Pack Building Toy for Boys & Girls - The Mandalorian Pretend Play Set W/4 Character Minifigures for Kids & Fans, Ages 6 - Gift Idea for Birthdays - 75449
814.3 out of 5 Stars. 81 reviews100+ bought since yesterday LEGO Star Wars The Mandalorian & Grogu's Speeder Bike - Building Toy for Boys & Girls, Ages 6 - Great Gift for Kids - W/ 2 Star Wars Figures - 75436 $9.97
100+ bought since yesterday
$997current price $9.97LEGO Star Wars The Mandalorian & Grogu's Speeder Bike - Building Toy for Boys & Girls, Ages 6 - Great Gift for Kids - W/ 2 Star Wars Figures - 75436
1484.7 out of 5 Stars. 148 reviewsLEGO Star Wars SMART Play: Luke’s Landspeeder - Building Toy for Action Play - Compatible Set with a SMART Tag and 2 LEGO Minifigures - Gift for Boys, Girls and Kids Ages 6 - 75420 $39.97
Sponsored$3997current price $39.97LEGO Star Wars SMART Play: Luke’s Landspeeder - Building Toy for Action Play - Compatible Set with a SMART Tag and 2 LEGO Minifigures - Gift for Boys, Girls and Kids Ages 6 - 75420
594.5 out of 5 Stars. 59 reviewsSave withDelivery as soon as 1 hourShipping, arrives todayPickup as soon as 11amLEGO Jurassic World Raptor Off-Road Escape Dinosaur Toy - Building Playset with Dinosaur Action Figures, Jurassic World Toy for Boys & Girls, Ages 6 - Gift for Birthdays - 76972 $31.99 Was $39.99
$3199current price $31.99, Was $39.99$39.99LEGO Jurassic World Raptor Off-Road Escape Dinosaur Toy - Building Playset with Dinosaur Action Figures, Jurassic World Toy for Boys & Girls, Ages 6 - Gift for Birthdays - 76972
1914.4 out of 5 Stars. 191 reviewsLEGO Star Wars: The Clone Wars V-19 Torrent Starfighter Building Toy - Pretend Play Set for Boys & Girls, Ages 9 - Starship Model Kit W/ 3 Minifigures - Gift Idea for Birthdays - 75432 $51.99
$5199current price $51.99LEGO Star Wars: The Clone Wars V-19 Torrent Starfighter Building Toy - Pretend Play Set for Boys & Girls, Ages 9 - Starship Model Kit W/ 3 Minifigures - Gift Idea for Birthdays - 75432
2044.2 out of 5 Stars. 204 reviews500+ bought since yesterday LEGO Speed Champions Time Machine from Back to the Future Building Toy for Kids - Pretend Play & Display Car Toy W/2 Build Modes for Boys & Girls, Ages 9 - Gift Ideas for Birthdays & Fans - 77256 $22.39 Was $27.99
500+ bought since yesterday
$2239current price $22.39, Was $27.99$27.99LEGO Speed Champions Time Machine from Back to the Future Building Toy for Kids - Pretend Play & Display Car Toy W/2 Build Modes for Boys & Girls, Ages 9 - Gift Ideas for Birthdays & Fans - 77256
11664.8 out of 5 Stars. 1166 reviewsLEGO NINJAGO Arin’s Spinjitzu Battle Mech Building Toy - Ninja Building Set for Kids, Ages 7 - With Arin, Baby Ryu, & Villain Minifigures - Gift Idea for Boys, Girls, & Dragons Rising Fans - 71839 $18.39 Was $22.99
$1839current price $18.39, Was $22.99$22.99LEGO NINJAGO Arin’s Spinjitzu Battle Mech Building Toy - Ninja Building Set for Kids, Ages 7 - With Arin, Baby Ryu, & Villain Minifigures - Gift Idea for Boys, Girls, & Dragons Rising Fans - 71839
1094.7 out of 5 Stars. 109 reviewsLEGO Technic Ford Bronco Kids Toy Car - Building Toy for Boys and Girls, Ages 10 - Car Toy and Model Kit - Gift for Birthdays - Authentic Ford Bronco Trim & Details - 42213 $51.99 Was $64.99
$5199current price $51.99, Was $64.99$64.99LEGO Technic Ford Bronco Kids Toy Car - Building Toy for Boys and Girls, Ages 10 - Car Toy and Model Kit - Gift for Birthdays - Authentic Ford Bronco Trim & Details - 42213
7044.5 out of 5 Stars. 704 reviewsLEGO Star Wars SMART Play: AT-ST Attack on Endor Toy Building Set for Kids - Compatible Set with 2 SMART Tags and 3 LEGO Minifigures - Gift for Boys, Girls and Fans Ages 8 - 75424 $49.97
$4997current price $49.97LEGO Star Wars SMART Play: AT-ST Attack on Endor Toy Building Set for Kids - Compatible Set with 2 SMART Tags and 3 LEGO Minifigures - Gift for Boys, Girls and Fans Ages 8 - 75424
644.2 out of 5 Stars. 64 reviewsBest seller LEGO Minecraft Zombie Dungeon Building & Pretend Play Toy for Boys & Girls - Video Game Playset & Toy Figures for Kids, Ages 8 - W/Wandering Wastelands Minifigure - Gift Idea for Birthdays - 21587 $23.95
Best seller
$2395current price $23.95LEGO Minecraft Zombie Dungeon Building & Pretend Play Toy for Boys & Girls - Video Game Playset & Toy Figures for Kids, Ages 8 - W/Wandering Wastelands Minifigure - Gift Idea for Birthdays - 21587
794.8 out of 5 Stars. 79 reviews
Customer ratings & reviews
Customer photos






+11 images
Showing 1-3 of 28 reviews
5.0 out of 5 stars - Perfect for the LEGO-Obsessed
[This review was collected as part of a promotion.] I gave this to my 11-year-old niece, and it was an absolute hit! She is a true LEGO fanatic—she lives, breathes, and sleeps building—and this set really impressed her. Even for a seasoned young builder who has done it all, this Master Dragon (Rontu) was an engaging and rewarding project. She was especially impressed with the posability; once built, the dragon has incredible movement in the head, jaw, legs, and tail, which makes it look fantastic on her display shelf. The addition of the four minifigures (especially Lloyd and Sora) and the mini-shrine added a lot of play value, but for her, the joy was all in the intricate details of the build itself. It's sturdy enough to actually play with but detailed enough to look like a collector's piece. If you have a child in your life who is passionate about LEGO, I can't recommend this enough. It's a brilliant addition to any Ninjago collection! #complimentary #LEGO @influenster @lego
Seller Verified Purchase
Fun build with great detail
This set was a lot of fun to build, with clear instructions and plenty of detail in the design. The minifigures are colorful and well-made, and the finished build feels sturdy enough for play but also looks great on display. I really appreciated the little features and moving parts that make it more interactive. Overall, it kept me engaged from start to finish and is a solid addition for any Ninjago fan.
Seller Verified Purchase
Great set
This Lego set is a lot of fun to put together, with the instructions being easy to follow. The pieces seem to be of good quality as always, with Lego. It didn't take long for my daughter and I to put it together. Holds up well for playing with it afterwards. The little disc goes really far as well.
