# LEGO 71842-1 — Rontu the Master Dragon (2025)

Source: https://www.brickmissing.com/sets/71842-1-rontu-the-master-dragon
Publisher: BrickMissing (https://www.brickmissing.com) — free LEGO parts checker. Not affiliated with the LEGO Group.

LEGO NINJAGO Rontu the Master Dragon (71842-1) brings a pivotal creature from season 3 of NINJAGO Dragons Rising to life. This 381-piece set constructs Rontu, featuring a fully posable tail, legs, wings, head, and jaw through articulated joints, enabling dynamic battle poses against the Master of Misfortune, Zarkt. Ninja warriors Lloyd, Sora, and Wyldfyre are included, each armed with a ninja weapon, ready to ride Rontu utilizing the two minifigure positions on its back. The dragon integrates stud shooters under each wing for active play. A brick-built mini shrine with a secret message, revealed by Lloyd’s translucent reveal blade accessory, completes the scene, setting the stage for epic good-versus-evil confrontations.

## Set facts

- Set number: 71842-1
- Name: Rontu the Master Dragon
- Theme: Ninjago › Dragons Rising Season 3
- Released: 2025
- Pieces: 381
- Distinct part + colour lots: 138
- LEGO retail price: € 44,99
- Build difficulty: intermediate
- Repairability: 7.2% of this set's lots are hard to replace (10 of 138 part+colour combinations appear in three or fewer sets in the entire LEGO catalog).

## Complete parts list (138 lots, 381 pieces)

Prices are the official LEGO Pick a Brick price per individual part, where LEGO publishes one.

| Qty | Part | Colour | Part no. | LEGO element ID | LEGO price each |
| ---: | --- | --- | --- | --- | --- |
| 1 | Sticker Sheet for Set 71842-1 | Unknown | 10113523 | 6546194 | — |
| 2 | Plate Special 1 x 2 with Clip Horizontal on Side | Black | 11476 | 6313116 | €0,15 |
| 12 | Slope Curved 2 x 1 No Studs [1/2 Bow] | Dark Purple | 11477 | 6057390 | €0,06 |
| 2 | Plate Round 4 x 4 with 2 x 2 Round Opening | Black | 11833 | 6167800 | €0,27 |
| 4 | Plate Special 1 x 2 with 5.9mm Centre Side Towball | Dark Bluish Gray | 14417 | 6039479 | €0,16 |
| 8 | Plate Special 1 x 2 5.9mm Centre Side Towball Socket | Light Bluish Gray | 14704 | 6043656 | €0,13 |
| 2 | Tile Round 2 x 2 with Bottom Stud Holder | Dark Purple | 14769 | 6097501 | €0,07 |
| 11 | Slope Curved 2 x 2 x 2/3 | Dark Blue | 15068 | 6061569 | €0,13 |
| 7 | Slope Curved 2 x 2 x 2/3 | Dark Purple | 15068 | 6182217 | €0,13 |
| 10 | Plate Special 1 x 1 with Vertical Tooth | Pearl Gold | 15070 | 6083975 | €0,10 |
| 4 | Slope 45? 2 x 1 with 2/3 Cutout [New Version] | Dark Purple | 15672 | 6472512 | €0,05 |
| 1 | Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard] | Pearl Gold | 21459 | 6116596 | €0,13 |
| 1 | Brick 1 x 2 x 3 with Bottom Stud Holder | Light Bluish Gray | 22886 | 6170387 | €0,23 |
| 2 | Plate Special 1 x 2 with End Towball | Dark Bluish Gray | 22890 | 6123814 | €0,16 |
| 2 | Bar Holder with Hole and Bar Handle | Pearl Gold | 23443 | 6296657 | €0,07 |
| 4 | Plate 2 x 2 Corner | Dark Tan | 2420 | 4550168 | €0,07 |
| 1 | Plate 2 x 12 | Black | 2445 | 244526 | €0,36 |
| 1 | Weapon Sword / Saber with Curved Blade and Hilt | Pearl Gold | 25111 | 6245239 | €0,24 |
| 4 | Tile Round 1 x 1 Quarter | Dark Blue | 25269 | 6199890 | €0,05 |
| 2 | Tile Round 1 x 1 Quarter | Dark Bluish Gray | 25269 | 6199549 | €0,05 |
| 1 | Tassel with 1 x 1 Round Stud | Pearl Gold | 25375 | 6274711 | €0,29 |
| 1 | Plate Special 1 x 2 Side Handle [Free Ends] | Black | 2540 | 4140588 | €0,07 |
| 2 | Plate 4 x 4 Corner | Dark Bluish Gray | 2639 | 4539429 | €0,27 |
| 2 | Plate 4 x 4 Corner | Dark Blue | 2639 | 6442566 | €0,27 |
| 6 | Wedge Plate 2 x 2 Cut Corner | Dark Blue | 26601 | 6164071 | €0,07 |
| 2 | Technic Disc 3 x 3 | Black | 2723 | 4218868 | €0,21 |
| 2 | Tile Special 2 x 2 Corner with Cut Corner - Facet | Dark Blue | 27263 | 6166854 | €0,07 |
| 2 | Wave / Power Blast Rounded Energy with Bar Handle | Trans-Orange | 27393 | 6353240 | €0,30 |
| 12 | Tile 2 x 2 Curved, Macaroni | Dark Purple | 27925 | 6199899 | €0,08 |
| 2 | Minifig Head [Plain] [Vented Stud - 2 Holes] | Trans-Light Blue | 28621 | 6513993 | €0,19 |
| 4 | Bracket 1 x 2 - 1 x 4 [Rounded Corners at Bottom, Square Corners at Top] | Black | 28802 | 6168620 | €0,12 |
| 2 | Brick 1 x 1 | Black | 3005 | 300526 | €0,07 |
| 2 | Brick 1 x 1 | Dark Blue | 3005 | 4255413 | €0,07 |
| 2 | Brick 1 x 4 | Dark Blue | 3010 | 4264569 | €0,16 |
| 2 | Plate 2 x 4 | Dark Bluish Gray | 3020 | 4211065 | €0,15 |
| 4 | Plate 2 x 4 | Dark Purple | 3020 | 6030277 | €0,15 |
| 2 | Plate 2 x 3 | Dark Blue | 3021 | 4530028 | €0,13 |
| 1 | Plate 2 x 3 | Black | 3021 | 302126 | €0,13 |
| 4 | Plate 2 x 2 | Dark Bluish Gray | 3022 | 4211094 | €0,10 |
| 6 | Plate 2 x 2 | Dark Purple | 3022 | 6047422 | €0,10 |
| 17 | Plate 1 x 2 | Dark Pink | 3023 | 6057387 | €0,08 |
| 4 | Plate 1 x 2 | Pearl Gold | 3023 | 6218047 | €0,08 |
| 4 | Hinge Plate 1 x 2 Locking with 1 Finger On Top | Light Bluish Gray | 30383 | 6265694 | €0,12 |
| 1 | Brick Round 1 x 1 Open Stud | Trans-Light Blue | 3062b | 6514238 | €0,08 |
| 4 | Tile 2 x 2 with Groove | Dark Tan | 3068b | 4507045 | €0,07 |
| 4 | Tile 1 x 1 with Groove | Dark Purple | 3070b | 6167457 | €0,05 |
| 12 | Animal / Creature Body Part, Claw with Clip | Pearl Gold | 3171 | 6426622 | €0,16 |
| 2 | Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin | White | 32064a | 6178921 | €0,17 |
| 3 | Slope Curved 2 x 2 x 2/3 Inverted | Dark Bluish Gray | 32803 | 6344820 | €0,11 |
| 2 | Plate Special 2 x 2 with Only 2 studs | Dark Blue | 33909 | 6214810 | €0,06 |
| 1 | Bar 1L with Clip [Cut Edges and One Side Hole] [Full Clip] | Dark Bluish Gray | 3484 | 6439040 | €0,07 |
| 2 | Bar 1L with Clip [Cut Edges and One Side Hole] [Full Clip] | Pearl Gold | 3484 | 6453281 | €0,07 |
| 2 | Weapon Chakram / Hoop Blade / Ring | Pearl Gold | 35485 | 6286094 | €0,18 |
| 2 | Brick 1 x 3 | Black | 3622 | 362226 | €0,15 |
| 2 | Bracket 1 x 1 - 1 x 1 | Dark Blue | 36841 | 6254479 | €0,05 |
| 2 | Technic Brick 1 x 2 [1 Pin Hole] | Black | 3700 | 370026 | €0,12 |
| 2 | Technic Brick 1 x 4 [3 Pin Holes] | Dark Bluish Gray | 3701 | 4213607 | €0,17 |
| 2 | Technic Axle 4 | Red | 3705 | 6129995 | €0,08 |
| 1 | Technic Axle 8 | Black | 3707 | 370726 | €0,22 |
| 2 | Plate 1 x 4 | Dark Blue | 3710 | 4502089 | €0,12 |
| 2 | Plate 1 x 4 | Dark Bluish Gray | 3710 | 4211001 | €0,12 |
| 1 | Equipment Lantern | Pearl Titanium | 37776 | 6234116 | €0,23 |
| 4 | Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) | White | 4032a | 403201 | €0,06 |
| 2 | Brick Special 1 x 1 with Headlight | Black | 4070 | 407023 | €0,07 |
| 2 | Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] | Dark Blue | 4081b | 6328107 | €0,10 |
| 4 | Technic Beam 1 x 2 Thin | Dark Bluish Gray | 41677 | 6338422 | €0,13 |
| 1 | Wedge Curved Inverted 6 x 4 | Dark Purple | 43713 | 6521859 | €0,52 |
| 2 | Dish 2 x 2 Inverted [Radar] | Black | 4740 | 474026 | €0,05 |
| 1 | Brick Curved 2 x 2 x 2/3 Two Studs and Curved Slope End | White | 47457 | 4494474 | €0,15 |
| 1 | Brick Special 1 x 1 with Studs on 2 Sides | Dark Bluish Gray | 47905 | 4213574 | €0,11 |
| 1 | Slope Inverted 45° 4 x 2 Double | Dark Bluish Gray | 4871 | 4211076 | €0,21 |
| 1 | Plate Special 1 x 1 with Tooth | Light Bluish Gray | 49668 | 6213644 | €0,06 |
| 2 | Slope Curved 3 x 1 No Studs | Dark Purple | 50950 | 6103449 | €0,12 |
| 2 | Wedge Plate 2 x 4 | Dark Blue | 51739 | 4613335 | €0,10 |
| 2 | Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small | Dark Pink | 53451 | 6546203 | €0,07 |
| 3 | Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small | Black | 53451 | 6270103 | €0,07 |
| 2 | Technic Ball Joint with Through Axle Hole | Black | 53585 | 4286267 | €0,13 |
| 2 | Slope 30° 1 x 1 x 2/3 (Cheese Slope) | Black | 54200 | 4504382 | €0,06 |
| 1 | Slope 30° 1 x 1 x 2/3 (Cheese Slope) | Dark Bluish Gray | 54200 | 4504378 | €0,06 |
| 2 | Slope 30° 1 x 1 x 2/3 (Cheese Slope) | Dark Blue | 54200 | 4504374 | €0,06 |
| 4 | Hinge Cylinder 1 x 2 Locking with 2 Click Fingers and Axle Hole, 7 Teeth | Dark Bluish Gray | 57360 | 6271538 | €0,13 |
| 3 | Technic Brick Modified 2 x 2 with Ball and Axle Hole, with 6 Holes in Ball | Dark Bluish Gray | 57909b | 4497253 | — |
| 2 | Creature Body Part, Dragon, Wing Large | Dark Pink | 5973 | 6546169 | €4,07 |
| 1 | Plate Round 4 x 4 with Pin Hole | Dark Bluish Gray | 60474 | 4528323 | €0,17 |
| 2 | Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip] | Dark Purple | 60897 | 6352224 | €0,08 |
| 2 | Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip] | Red | 60897 | 6337002 | €0,08 |
| 2 | Brick 1 x 12 | Dark Purple | 6112 | 6525446 | €0,39 |
| 3 | Technic Pin with Friction Ridges Lengthwise with No Center Slots | Black | 61332 | 6279875 | €0,06 |
| 2 | Plate Round 1 x 1 with Solid Stud | Dark Purple | 6141 | 4566522 | €0,05 |
| 1 | Plate Round 1 x 1 with Solid Stud | Black | 6141 | 614126 | €0,05 |
| 2 | Plate Special 1 x 2 with Clip Horizontal on End | Black | 63868 | 6336989 | €0,15 |
| 1 | Wedge Curved 4 x 3 No Studs [Plain] | Dark Purple | 64225 | 6477151 | €0,30 |
| 2 | Technic Axle Pin 3L without Friction Ridges and 2L Axle | Light Bluish Gray | 65249 | 6385183 | €0,11 |
| 2 | Technic Pin with Friction Ridges Lengthwise and Towball - Round Pin Hole | Black | 66906 | 6344752 | €0,11 |
| 1 | Weapon Hilt Symmetric | Sand Green | 66909 | 6474604 | €0,10 |
| 5 | Technic Brick Special 2 x 2 with Ball Socket Wide and Axle Hole, No Arm Holes | Black | 67696 | 6360825 | €0,42 |
| 2 | Launcher, Plate Special 1 x 2 with Mini Blaster Square | Pearl Gold | 69754 | 6345949 | €0,16 |
| 2 | Launcher Trigger, Weapon Gun Trigger | Dark Bluish Gray | 69755 | 6360675 | €0,05 |
| 2 | Energy Effect, Flame, Squiggly | Trans-Dark Pink | 7105 | 6546162 | €0,98 |
| 1 | Weapon Sword, Broad with Trans-Red Blade pattern | Pearl Gold | 7182pat0001 | 6543920 | €1,62 |
| 1 | Creature Body Part, Dragon Head Upper Jaw with Bright Light Yellow Eye, Dark Pink/Blue Markings print | Dark Blue | 7243pr0001 | 6540563 | — |
| 1 | Technic Brick Special 1 x 2 with Pin Hole and 1 x 2 Plate | Light Bluish Gray | 73109 | 6326478 | €0,21 |
| 6 | Bracket 1 x 1 - 1 x 2 Inverted | Black | 73825 | 6335317 | €0,10 |
| 1 | Bracket 5 x 2 x 1 1/3 with Bottom Stud Holder | Black | 79180 | 6533639 | €0,35 |
| 4 | Bracket 1 x 1 - 1 x 2 | Dark Bluish Gray | 79389 | 6435043 | €0,10 |
| 2 | Plate Angled 2 x 2 with Step and Hole in Center | Dark Bluish Gray | 79846 | 6395097 | €0,39 |
| 2 | Brick Special 2 x 5 with Slope, Studs on Side | Dark Blue | 79897 | 6521179 | €0,59 |
| 2 | Animal Body Part / Plant, Tail / Trunk / Tentacle / Tongue / Vine / Tree Branch (Long Tip) | Dark Pink | 80497 | 6382560 | €0,24 |
| 2 | Brick Round Corner 2 x 2 Macaroni with Stud Notch and Reinforced Underside [New Style] | Black | 85080 | 4567436 | €0,10 |
| 2 | Plate Round 1 x 1 with Open Stud | Pearl Gold | 85861 | 6190252 | €0,04 |
| 3 | Plate Round 1 x 1 with Open Stud | Dark Bluish Gray | 85861 | 6231765 | €0,04 |
| 4 | Slope 30? 1 x 2 x 2/3 | Dark Purple | 85984 | 4566607 | €0,07 |
| 1 | Chain 6L [5 Links] | Black | 92338 | 6328408 | €0,39 |
| 4 | Plate Special 1 x 2 with Angled Handles on Side | Pearl Gold | 92692 | 6280488 | €0,19 |
| 4 | Tile Round 1 x 1 | Dark Pink | 98138 | 6322821 | €0,04 |
| 3 | Tile Round 1 x 1 | Dark Tan | 98138 | 6322841 | €0,04 |
| 4 | Bracket 1 x 2 - 2 x 2 Inverted | Dark Bluish Gray | 99207 | 6308045 | €0,10 |
| 1 | Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot] | Black | 99563 | 6156991 | €0,05 |
| 16 | Bracket 1 x 2 - 1 x 2 Inverted | Dark Tan | 99780 | 6250168 | €0,10 |
| 7 | Bracket 1 x 2 - 1 x 2 | Dark Blue | 99781 | 6350417 | €0,10 |
| 1 | Hair Swept Back, Tan with Headband Pattern | Bright Green | 69562pat0001 | 6468744 | — |
| 1 | Hips and Bright Green Legs with Dark Red Sash, Knee Caps, Robe Ends, Dark Green Trim print | Bright Green | 970c06pr0007 | 6540565 | — |
| 1 | Minifig Neckwear Shoulder Armour With Pearl Gold Dragon pattern | Bright Green | 7104pat0001 | 6544915 | €3,74 |
| 1 | Torso, Ninja Robes, Dark Green Trim, Dark Red Plated Armor, Dark Tan Strap, Gold Dragon print, Bright Green Arms, Black Hands | Bright Green | 973c06h03pr0003 | 6544965 | — |
| 1 | Minifig Head Lloyd, Reddish Brown Eyebrows, Green Eyes, Lopsided Open Mouth Grin / Gritted Teeth Print | Yellow | 3626cpr2255 | 6191962 | €0,31 |
| 1 | Hair, High Ponytail with Dark Blue Headphones, Cat Ears pattern | Coral | 5326pat0001 | 6466239 | €0,90 |
| 1 | Minifig Neckwear Shoulder Armour With Pearl Gold Dragon pattern | Dark Blue | 7104pat0001 | 6544548 | €3,74 |
| 1 | Hips and White Legs with Coral Sash, Robe Ends, Gold/Sand Blue Knee Pads print | White | 970c27pr0032 | 6540567 | — |
| 1 | Torso, Ninja Robes, Dark Blue/Coral Trim, Dark Blue Belt, Gold Cat print, White Arms, Dark Blue Hands | White | 973c27h05pr0003 | 6544552 | — |
| 1 | Minifig Head Sora, Coral Eyeshadow and Lips, Gold Markings, Golden Eyes / Angry Grin print | Yellow | 28621pr3985 | 6442565 | €0,31 |
| 1 | Hips and Dark Red Legs with Orange Sash, Robe End with Sand Green Trim, Red Knee Wraps print | Dark Red | 970c10pr0004 | 6473850 | — |
| 1 | Torso, Ninja Robe, Sand Green Trim, Dark Tan Armor Plating, Orange Sash print, Yellow Arms, Black Hands | Dark Red | 973c01h03pr0006 | 6482044 | — |
| 1 | Hair, Mid Length with Bun | Red | 5311 | 6478060 | €0,39 |
| 1 | Minifig Head Wildfyre, Red Eyebrows, Scar, Angry Teeth print | Yellow | 28621pr3996 | 6434461 | — |
| 1 | Hat, Ronin | Black | 5988 | 6540812 | €1,78 |
| 1 | Minifig Head Zarkt, Red Eyes, Dark Tan Sharp Teeth, Fangs, Dark Purple Markings, Closed Mouth / Open Mouth | Black | 28621pr9714 | 6519434 | — |
| 1 | Hips and Legs Under Dress/Robe with Dark Purple Lines/Vines, Gold Chain print | Dark Green | 36036pr0083 | 6519436 | — |
| 1 | Torso, Dark Purple Lines/Vines, Gold Chain print, Dark Green Arms, Black Hands | Dark Green | 973c35h03pr0005 | 6540826 | — |

## Notes

- Track which of these parts you own and see what is missing: https://www.brickmissing.com/sets/71842-1-rontu-the-master-dragon
- Inventory data is based on official LEGO inventories via the Rebrickable catalog, updated daily.
- Part images, minifigure lists and related sets are on the set page: https://www.brickmissing.com/sets/71842-1-rontu-the-master-dragon