Rontu the Master Dragon (71842-1)
Price Comparison
No retailers currently stock Rontu the Master Dragon in The United States.
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Set details
Name: Rontu the Master DragonSet number: 71842-1
Year: 2025
Theme: Ninjago
Number of parts: 381
Number of part types: 120
Age rating: 7+
Retail price: $49.99
Retirement date: 31-07-2026
LEGO® NINJAGO® Rontu the Master Dragon (71842) toy lets ninja fans aged 7 and up recreate action-packed scenes from season 3 of the NINJAGO Dragons Rising TV show. This building set for kids features a dragon toy with a posable tail, legs, wings, head and jaw, 2 positions to place a minifigure on its back and a stud shooter under each wing. 4 NINJAGO minifigures are included in the LEGO playset: ninja warriors Lloyd, Sora and Wyldfyre, each with a ninja weapon accessory, plus Master of Misfortune, Zarkt, for kids to play out epic good vs. evil battles. There is also a brick-built mini shrine with a secret message that Lloyd reveals with his translucent reveal blade accessory. Sets and buildable action toys in the LEGO NINJAGO range (sold separately) include mechs, vehicles and temples so fans can role-play ninja action. Each ninja playset can be created with the LEGO Builder app, which guides you and your child on an easy and intuitive building adventure. Set contains 381 pieces.
Price History
Track how the lowest available price for set 71842-1 in The United States has changed over time.
Browse all 381 parts in set 71842-1 with individual pricing from BrickLink or Brick Owl.
Pricing information known of 118/120 parts.
| Part | Color | Quantity | Average price | Total | Value | |||
|---|---|---|---|---|---|---|---|---|
![]() | Creature Body Part, Dragon, Wing Large ![]() | |||||||
![]() | Bracket 1 x 2 - 1 x 2 ![]() | |||||||
![]() | Energy Effect, Flame, Squiggly ![]() | |||||||
![]() | Bracket 1 x 1 - 1 x 2 ![]() | |||||||
![]() | Technic Brick Special 2 x 2 with Ball Socket Wide and Axle Hole, No Arm Holes ![]() | |||||||
![]() | Animal / Creature Body Part, Claw with Clip ![]() | |||||||
![]() | Bracket 1 x 1 - 1 x 2 Inverted ![]() | |||||||
![]() | Brick 1 x 12 ![]() | |||||||
![]() | Plate 1 x 2 ![]() | |||||||
![]() | Creature Body Part, Dragon Head Upper Jaw with Bright Light Yellow Eye, Dark Pink/Blue Markings print ![]() | |||||||
![]() | Brick Special 2 x 5 with Slope, Studs on Side ![]() | |||||||
![]() | Bracket 1 x 2 - 1 x 2 Inverted ![]() | |||||||
![]() | Tile 2 x 2 Curved, Macaroni ![]() | |||||||
![]() | Slope Curved 2 x 2 x 2/3 ![]() | |||||||
![]() | Slope Curved 2 x 2 x 2/3 Inverted ![]() | |||||||
![]() | Plate 1 x 2 ![]() | |||||||
![]() | Slope Curved 2 x 1 No Studs [1/2 Bow] ![]() | |||||||
![]() | Technic Axle Pin 3L without Friction Ridges and 2L Axle ![]() | |||||||
![]() | Bar 1L with Clip [Cut Edges and One Side Hole] [Full Clip] ![]() | |||||||
![]() | Slope Curved 2 x 2 x 2/3 ![]() | |||||||
![]() | Plate Special 1 x 1 with Vertical Tooth ![]() | |||||||
![]() | Minifig Head [Plain] [Vented Stud - 2 Holes] ![]() | |||||||
![]() | Bracket 1 x 2 - 2 x 2 Inverted ![]() | |||||||
![]() | Hinge Plate 1 x 2 Locking with 1 Finger On Top ![]() | |||||||
![]() | Plate Special 1 x 2 with Angled Handles on Side ![]() | |||||||
![]() | Brick 1 x 4 ![]() | |||||||
![]() | Wedge Curved Inverted 6 x 4 ![]() | |||||||
![]() | Wedge Plate 2 x 2 Cut Corner ![]() | |||||||
![]() | Plate 2 x 2 ![]() | |||||||
![]() | Slope 45° 2 x 1 with 2/3 Cutout [New Version] ![]() | |||||||
![]() | Technic Beam 1 x 2 Thin ![]() | |||||||
![]() | Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small ![]() | |||||||
![]() | Brick 1 x 3 ![]() | |||||||
![]() | Plate 4 x 4 Corner ![]() | |||||||
![]() | Technic Ball Joint with Through Axle Hole ![]() | |||||||
![]() | Weapon Chakram / Hoop Blade / Ring ![]() | |||||||
![]() | Plate Special 1 x 2 5.9mm Centre Side Towball Socket ![]() | |||||||
![]() | Plate 2 x 4 ![]() | |||||||
![]() | Tile 1 x 1 with Groove ![]() | |||||||
![]() | Plate Round 4 x 4 with 2 x 2 Round Opening ![]() | |||||||
![]() | Equipment Lantern ![]() | |||||||
![]() | Bracket 1 x 1 - 1 x 1 ![]() | |||||||
![]() | Hinge Cylinder 1 x 2 Locking with 2 Click Fingers and Axle Hole, 7 Teeth ![]() | |||||||
![]() | Tile 2 x 2 with Groove ![]() | |||||||
![]() | Chain 6L [5 Links] ![]() | |||||||
![]() | Technic Brick 1 x 4 [3 Pin Holes] ![]() | |||||||
![]() | Plate Round 1 x 1 with Open Stud ![]() | |||||||
![]() | Animal Body Part / Plant, Tail / Trunk / Tentacle / Tongue / Vine / Tree Branch (Long Tip) ![]() | |||||||
![]() | Plate 2 x 2 ![]() | |||||||
![]() | Brick 1 x 1 ![]() | |||||||
![]() | Brick Round Corner 2 x 2 Macaroni with Stud Notch and Reinforced Underside [New Style] ![]() | |||||||
![]() | Launcher, Plate Special 1 x 2 with Mini Blaster Square ![]() | |||||||
![]() | Plate Special 1 x 1 with Tooth ![]() | |||||||
![]() | Plate 2 x 12 ![]() | |||||||
![]() | Tile Round 1 x 1 ![]() | |||||||
![]() | Weapon Hilt Symmetric ![]() | |||||||
![]() | Technic Brick Modified 2 x 2 with Ball and Axle Hole, with 6 Holes in Ball ![]() | |||||||
![]() | Plate Angled 2 x 2 with Step and Hole in Center ![]() | |||||||
![]() | Plate Special 2 x 2 with Only 2 studs ![]() | |||||||
![]() | Brick Special 1 x 1 with Headlight ![]() | |||||||
![]() | Plate 2 x 4 ![]() | |||||||
![]() | Wave / Power Blast Rounded Energy with Bar Handle ![]() | |||||||
![]() | Brick Special 1 x 1 with Studs on 2 Sides ![]() | |||||||
![]() | Technic Axle 8 ![]() | |||||||
![]() | Wedge Curved 4 x 3 No Studs [Plain] ![]() | |||||||
![]() | Technic Brick 1 x 2 [1 Pin Hole] ![]() | |||||||
![]() | Bracket 1 x 2 - 1 x 4 [Rounded Corners at Bottom, Square Corners at Top] ![]() | |||||||
![]() | Plate Special 1 x 2 with 5.9mm Centre Side Towball ![]() | |||||||
![]() | Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) ![]() | |||||||
![]() | Bar Holder with Hole and Bar Handle ![]() | |||||||
![]() | Tile Special 2 x 2 Corner with Cut Corner - Facet ![]() | |||||||
![]() | Plate Special 1 x 2 with End Towball ![]() | |||||||
![]() | Plate 1 x 4 ![]() | |||||||
![]() | Slope 30° 1 x 2 x 2/3 ![]() | |||||||
![]() | Plate 2 x 2 Corner ![]() | |||||||
![]() | Brick 1 x 1 ![]() | |||||||
![]() | Tile Round 1 x 1 Quarter ![]() | |||||||
![]() | Weapon Sword / Saber with Curved Blade and Hilt ![]() | |||||||
![]() | Tile Round 2 x 2 with Bottom Stud Holder ![]() | |||||||
![]() | Tassel with 1 x 1 Round Stud ![]() | |||||||
![]() | Plate 4 x 4 Corner ![]() | |||||||
![]() | Slope Curved 3 x 1 No Studs ![]() | |||||||
![]() | Brick 1 x 2 x 3 with Bottom Stud Holder ![]() | |||||||
![]() | Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard] ![]() | |||||||
![]() | Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] ![]() | |||||||
![]() | Tile Round 1 x 1 ![]() | |||||||
![]() | Plate 1 x 4 ![]() | |||||||
![]() | Plate 2 x 3 ![]() | |||||||
![]() | Dish 2 x 2 Inverted [Radar] ![]() | |||||||
![]() | Technic Disc 3 x 3 ![]() | |||||||
![]() | Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot] ![]() | |||||||
![]() | Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small ![]() | |||||||
![]() | Technic Pin with Friction Ridges Lengthwise with No Center Slots ![]() | |||||||
![]() | Plate Special 1 x 2 with Clip Horizontal on Side ![]() | |||||||
![]() | Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin ![]() | |||||||
![]() | Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip] ![]() | |||||||
![]() | Slope 30° 1 x 1 x 2/3 (Cheese Slope) ![]() | |||||||
![]() | Plate 2 x 3 ![]() | |||||||
![]() | Technic Axle 4 ![]() | |||||||
![]() | Wedge Plate 2 x 4 ![]() | |||||||
![]() | Plate Special 1 x 2 with Clip Horizontal on End ![]() | |||||||
![]() | Technic Pin with Friction Ridges Lengthwise and Towball - Round Pin Hole ![]() | |||||||
![]() | Tile Round 1 x 1 Quarter ![]() | |||||||
![]() | Plate Round 1 x 1 with Open Stud ![]() | |||||||
![]() | Plate Round 1 x 1 with Solid Stud ![]() | |||||||
![]() | Launcher Trigger, Weapon Gun Trigger ![]() | |||||||
![]() | Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip] ![]() | |||||||
![]() | Technic Brick Special 1 x 2 with Pin Hole and 1 x 2 Plate ![]() | |||||||
![]() | Slope 30° 1 x 1 x 2/3 (Cheese Slope) ![]() | |||||||
![]() | Slope 30° 1 x 1 x 2/3 (Cheese Slope) ![]() | |||||||
![]() | Brick Round 1 x 1 Open Stud ![]() | |||||||
![]() | Brick Curved 2 x 2 x 2/3 Two Studs and Curved Slope End ![]() | |||||||
![]() | Plate Special 1 x 2 Side Handle [Free Ends] ![]() | |||||||
![]() | Plate Round 4 x 4 with Pin Hole ![]() | |||||||
![]() | Bracket 5 x 2 x 1 1/3 with Bottom Stud Holder ![]() | |||||||
![]() | Plate Round 1 x 1 with Solid Stud ![]() | |||||||
![]() | Bar 1L with Clip [Cut Edges and One Side Hole] [Full Clip] ![]() | |||||||
![]() | Slope Inverted 45° 4 x 2 Double with 2 x 2 Recessed ![]() | |||||||
Missing pricing information on the following items.
| Part | Color | Quantity | |
|---|---|---|---|
![]() | Sticker Sheet for Set 71842-1 ![]() | ||
![]() | Weapon Sword, Broad with Trans-Red Blade pattern ![]() | ||
Minifigures included in set 71842-1.
| Minifigure | Quantity | Value | |
|---|---|---|---|
![]() | Lloyd, Bright Green Shoulder Armor and Mask, Hair fig-016378, njo0974, BOID 1062581 | 1 | $13.52 |
![]() | Sora, Dark Blue Shoulder Armor and Mask fig-016376, njo0975, BOID 852553 | 1 | $9.57 |
![]() | Wyldfyre, Dark Red Outfit fig-015838, njo0923, BOID 1300004 | 1 | $2.99 |
![]() | Zarkt fig-016114, njo0948, BOID 277091 | 1 | $15.29 |
| Total minifigure value: | $41.37 | ||
Compare the value of buying Rontu the Master Dragon as a complete set versus the total value of all parts individually.
| Value Breakdown | |
| Parts value | $42.68 |
| Minifigure value | $41.37 |
| Total inventory value | $NaN |
BrickLink ![]() | |||||
| Condition | Timespan | Avg price | Items sold | Inventory value | Ratio |
| New | 6 months | ? | ? | $76.99 | ? |
| Used | 6 months | ? | ? | $0.00 | ? |
Brick Owl ![]() | ||||
| Condition | Timespan | Avg price | Inventory value | Ratio |
| New | Current | $48.15 | $177.31 | 3.68 |
| 6 months | ? | $89.45 | ? | |
| 1 year | $43.67 | $88.61 | 2.03 | |
| Used | Current | ? | $64.59 | ? |
| Combined 6 Month Sales Volume (New) | |
| Total items sold | ? |
LEGO® NINJAGO® Rontu the Master Dragon (71842) toy lets ninja fans aged 7 and up recreate action-packed scenes from season 3 of the NINJAGO Dragons Rising TV show. This building set for kids features a dragon toy with a posable tail, legs, wings, head and jaw, 2 positions to place a minifigure on its back and a stud shooter under each wing.
4 NINJAGO minifigures are included in the LEGO playset: ninja warriors Lloyd, Sora and Wyldfyre, each with a ninja weapon accessory, plus Master of Misfortune, Zarkt, for kids to play out epic good vs. evil battles. There is also a brick-built mini shrine with a secret message that Lloyd reveals with his translucent reveal blade accessory.
Sets and buildable action toys in the LEGO NINJAGO range (sold separately) include mechs, vehicles and temples so fans can role-play ninja action. Each ninja playset can be created with the LEGO Builder app, which guides you and your child on an easy and intuitive building adventure. Set contains 381 pieces.
- LEGO® NINJAGO® dragon toy for kids – Rontu the Master Dragon toy lets boys and girls aged 7 and up recreate scenes from season 3 of the NINJAGO Dragons Rising TV show
- Highly posable dragon figure – This large dragon model features a posable tail, legs, wings, head and jaw, 2 positions on its back for a minifigure, plus a stud shooter under each wing
- Mini shrine – Battle role-play set features a small brick-built shrine guarded by Zarkt, which contains a secret message that Lloyd can decode with his translucent reveal blade accessory
- 4 NINJAGO® minifigures – This LEGO® building set comes with ninja warriors Sora, Wyldfyre, Lloyd and the villainous Zarkt with ninja weapon accessories for kids to play out good vs. evil battles
- Birthday gift idea for kids – This LEGO® set provides a fun build-and-play experience and is a birthday gift idea for boys and girls aged 7 and up who have a passion for ninja action
- A fun way to build – The LEGO® Builder app guides kids on an intuitive building adventure, where they can save sets, track progress and zoom in and rotate models in 3D while they build
- A universe of LEGO® NINJAGO® sets – The extensive collection of ninja toy playsets (sold separately) lets kids escape into a fantasy world for imaginative play with their ninja heroes
- Measurements – The Rontu the Master Dragon figure in this 381-piece LEGO® NINJAGO® building kit stands over 5 in. (13 cm) tall
Find the cheapest offers for set 71842-1 from sellers on secondary marketplaces like Brick Owl and eBay. As an eBay Partner Network Affiliate and Brick Owl Affiliate, I earn from qualifying purchases.
| Item | Price | |
|---|---|---|
BrickLink history of 0 sales with 0 total item quantity. Item condition: New.
No sale history available.


















![Image of part Slope Curved 2 x 1 No Studs [1/2 Bow]](https://cdn.rebrickable.com/media/parts/elements/6057390.jpg)

![Image of part Bar 1L with Clip [Cut Edges and One Side Hole] [Full Clip]](https://cdn.rebrickable.com/media/parts/elements/6453281.jpg)


![Image of part Minifig Head [Plain] [Vented Stud - 2 Holes]](https://cdn.rebrickable.com/media/parts/elements/6168667.jpg)







![Image of part Slope 45° 2 x 1 with 2/3 Cutout [New Version]](https://cdn.rebrickable.com/media/parts/elements/6134312.jpg)














![Image of part Chain 6L [5 Links]](https://cdn.rebrickable.com/media/parts/elements/6328408.jpg)
![Image of part Technic Brick 1 x 4 [3 Pin Holes]](https://cdn.rebrickable.com/media/parts/elements/4213607.jpg)




![Image of part Brick Round Corner 2 x 2 Macaroni with Stud Notch and Reinforced Underside [New Style]](https://cdn.rebrickable.com/media/parts/elements/4164471.jpg)













![Image of part Wedge Curved 4 x 3 No Studs [Plain]](https://cdn.rebrickable.com/media/parts/elements/6477151.jpg)
![Image of part Technic Brick 1 x 2 [1 Pin Hole]](https://cdn.rebrickable.com/media/parts/elements/370026.jpg)
![Image of part Bracket 1 x 2 - 1 x 4 [Rounded Corners at Bottom, Square Corners at Top]](https://cdn.rebrickable.com/media/parts/elements/6168620.jpg)
















![Image of part Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard]](https://cdn.rebrickable.com/media/parts/elements/6116596.jpg)
![Image of part Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring]](https://cdn.rebrickable.com/media/parts/elements/6328107.jpg)



![Image of part Dish 2 x 2 Inverted [Radar]](https://cdn.rebrickable.com/media/parts/elements/474026.jpg)

![Image of part Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot]](https://cdn.rebrickable.com/media/parts/elements/6156991.jpg)



![Image of part Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin](https://cdn.rebrickable.com/media/parts/elements/4125562.jpg)
![Image of part Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip]](https://cdn.rebrickable.com/media/parts/elements/6176821.jpg)










![Image of part Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip]](https://cdn.rebrickable.com/media/parts/elements/4588003.jpg)





![Image of part Plate Special 1 x 2 Side Handle [Free Ends]](https://cdn.rebrickable.com/media/parts/elements/254026.jpg)



![Image of part Bar 1L with Clip [Cut Edges and One Side Hole] [Full Clip]](https://cdn.rebrickable.com/media/parts/elements/6439040.jpg)






