Name: LEGO Rontu the Master Dragon (71842-1)
Brand: LEGO
SKU: 71842-1
Availability: InStock

Rontu the Master Dragon (71842-1)

LEGO set 71842-1 Rontu the Master Dragon - Image 1

Set details

Name: Rontu the Master Dragon
Set number: 71842-1
Year: 2025
Theme: Ninjago
Number of parts: 381
Number of part types: 138
Age rating: 7+
Retail price:
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 has changed over time.

Browse all 381 parts in set 71842-1 with individual pricing from BrickLink or Brick Owl.

Price source:

Value of parts:
Pricing information known of 133/138 parts.

Part

Color

Quantity

Average price

Total

Value

Torso, Dark Purple Lines/Vines, Gold Chain print, Dark Green Arms, Black Hands

Dark Green

1 x

Hips and Legs Under Dress/Robe with Dark Purple Lines/Vines, Gold Chain print

Dark Green

1 x

Minifig Head Zarkt, Red Eyes, Dark Tan Sharp Teeth, Fangs, Dark Purple Markings, Closed Mouth / Open Mouth

Black

1 x

Torso, Ninja Robes, Dark Blue/Coral Trim, Dark Blue Belt, Gold Cat print, White Arms, Dark Blue Hands

White

1 x

Creature Body Part, Dragon, Wing Large

Dark Pink

2 x

Minifig Neckwear Shoulder Armour With Pearl Gold Dragon pattern

Dark Blue

1 x

Hat, Ronin

Black

1 x

Torso, Ninja Robes, Dark Green Trim, Dark Red Plated Armor, Dark Tan Strap, Gold Dragon print, Bright Green Arms, Black Hands

Bright Green

1 x

Hair, High Ponytail with Dark Blue Headphones, Cat Ears pattern

Coral

1 x

Bracket 1 x 2 - 1 x 2

Dark Blue

7 x

Hips and White Legs with Coral Sash, Robe Ends, Gold/Sand Blue Knee Pads print

White

1 x

Hair, Mid Length with Bun

Red

1 x

Energy Effect, Flame, Squiggly

Trans-Dark Pink

2 x

Bracket 1 x 1 - 1 x 2

Dark Bluish Gray

4 x

Technic Brick Special 2 x 2 with Ball Socket Wide and Axle Hole, No Arm Holes

Black

5 x

Animal / Creature Body Part, Claw with Clip

Pearl Gold

12 x

Bracket 1 x 1 - 1 x 2 Inverted

Black

6 x

Creature Body Part, Dragon Head Upper Jaw with Bright Light Yellow Eye, Dark Pink/Blue Markings print

Dark Blue

1 x

Plate 1 x 2

Pearl Gold

4 x

Brick 1 x 12

Dark Purple

2 x

Brick Special 2 x 5 with Slope, Studs on Side

Dark Blue

2 x

Torso, Ninja Robe, Sand Green Trim, Dark Tan Armor Plating, Orange Sash print, Yellow Arms, Black Hands

Dark Red

1 x

Tile 2 x 2 Curved, Macaroni

Dark Purple

12 x

Hips and Dark Red Legs with Orange Sash, Robe End with Sand Green Trim, Red Knee Wraps print

Dark Red

1 x

Bracket 1 x 2 - 1 x 2 Inverted

Dark Tan

16 x

Slope Curved 2 x 2 x 2/3

Dark Blue

11 x

Slope Curved 2 x 2 x 2/3 Inverted

Dark Bluish Gray

3 x

Plate 1 x 2

Dark Pink

17 x

Minifig Head Sora, Coral Eyeshadow and Lips, Gold Markings, Golden Eyes / Angry Grin print

Yellow

1 x

Minifig Head Wildfyre, Red Eyebrows, Scar, Angry Teeth print

Yellow

1 x

Slope Curved 2 x 1 No Studs [1/2 Bow]

Dark Purple

12 x

Technic Axle Pin 3L without Friction Ridges and 2L Axle

Light Bluish Gray

2 x

Bar 1L with Clip [Cut Edges and One Side Hole] [Full Clip]

Pearl Gold

2 x

Slope Curved 2 x 2 x 2/3

Dark Purple

7 x

Plate Special 1 x 1 with Vertical Tooth

Pearl Gold

10 x

Plate 4 x 4 Corner

Dark Blue

2 x

Minifig Head Lloyd, Reddish Brown Eyebrows, Green Eyes, Lopsided Open Mouth Grin / Gritted Teeth Print

Yellow

1 x

Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small

Dark Pink

2 x

Minifig Head [Plain] [Vented Stud - 2 Holes]

Trans-Light Blue

2 x

Brick 1 x 4

Dark Blue

2 x

Plate Special 1 x 2 with Angled Handles on Side

Pearl Gold

4 x

Bracket 1 x 2 - 2 x 2 Inverted

Dark Bluish Gray

4 x

Hinge Plate 1 x 2 Locking with 1 Finger On Top

Light Bluish Gray

4 x

Wedge Curved Inverted 6 x 4

Dark Purple

1 x

Wedge Plate 2 x 2 Cut Corner

Dark Blue

6 x

Plate 2 x 2

Dark Purple

6 x

Hinge Cylinder 1 x 2 Locking with 2 Click Fingers and Axle Hole, 7 Teeth

Dark Bluish Gray

4 x

Technic Beam 1 x 2 Thin

Dark Bluish Gray

4 x

Technic Ball Joint with Through Axle Hole

Black

2 x

Plate Special 1 x 2 5.9mm Centre Side Towball Socket

Light Bluish Gray

8 x

Plate 2 x 4

Dark Purple

4 x

Slope 45° 2 x 1 with 2/3 Cutout [New Version]

Dark Purple

4 x

Weapon Chakram / Hoop Blade / Ring

Pearl Gold

2 x

Tile 1 x 1 with Groove

Dark Purple

4 x

Equipment Lantern

Pearl Titanium

1 x

Brick 1 x 3

Black

2 x

Plate Round 4 x 4 with 2 x 2 Round Opening

Black

2 x

Tile 2 x 2 with Groove

Dark Tan

4 x

Bracket 1 x 1 - 1 x 1

Dark Blue

2 x

Plate 2 x 2

Dark Bluish Gray

4 x

Chain 6L [5 Links]

Black

1 x

Technic Brick 1 x 4 [3 Pin Holes]

Dark Bluish Gray

2 x

Animal Body Part / Plant, Tail / Trunk / Tentacle / Tongue / Vine / Tree Branch (Long Tip)

Dark Pink

2 x

Brick Round Corner 2 x 2 Macaroni with Stud Notch and Reinforced Underside [New Style]

Black

2 x

Plate Round 1 x 1 with Open Stud

Dark Bluish Gray

3 x

Weapon Hilt Symmetric

Sand Green

1 x

Plate Special 1 x 1 with Tooth

Light Bluish Gray

1 x

Plate 2 x 12

Black

1 x

Wedge Curved 4 x 3 No Studs [Plain]

Dark Purple

1 x

Launcher, Plate Special 1 x 2 with Mini Blaster Square

Pearl Gold

2 x

Brick 1 x 1

Black

2 x

Tile Round 1 x 1

Dark Tan

3 x

Plate Special 2 x 2 with Only 2 studs

Dark Blue

2 x

Tile Special 2 x 2 Corner with Cut Corner - Facet

Dark Blue

2 x

Plate Angled 2 x 2 with Step and Hole in Center

Dark Bluish Gray

2 x

Brick Special 1 x 1 with Headlight

Blue

2 x

Brick Special 1 x 1 with Studs on 2 Sides

Dark Bluish Gray

1 x

Technic Axle 8

Black

1 x

Plate 2 x 4

Dark Bluish Gray

2 x

Wave / Power Blast Rounded Energy with Bar Handle

Trans-Orange

2 x

Plate Special 1 x 2 with 5.9mm Centre Side Towball

Dark Bluish Gray

4 x

Bracket 1 x 2 - 1 x 4 [Rounded Corners at Bottom, Square Corners at Top]

Black

4 x

Plate 2 x 2 Corner

Dark Tan

4 x

Tile Round 1 x 1 Quarter

Dark Blue

4 x

Slope 30° 1 x 2 x 2/3

Dark Purple

4 x

Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)

White

4 x

Technic Brick Modified 2 x 2 with Ball and Axle Hole, with 6 Holes in Ball

Dark Bluish Gray

3 x

Bar Holder with Hole and Bar Handle

Pearl Gold

2 x

Plate Special 1 x 2 with End Towball

Dark Bluish Gray

2 x

Brick 1 x 1

Dark Blue

2 x

Technic Brick 1 x 2 [1 Pin Hole]

Black

2 x

Plate 1 x 4

Dark Bluish Gray

2 x

Weapon Sword / Saber with Curved Blade and Hilt

Pearl Gold

1 x

Tile Round 2 x 2 with Bottom Stud Holder

Dark Purple

2 x

Tassel with 1 x 1 Round Stud

Pearl Gold

1 x

Slope Curved 3 x 1 No Studs

Dark Purple

2 x

Brick 1 x 2 x 3 with Bottom Stud Holder

Light Bluish Gray

1 x

Plate 4 x 4 Corner

Dark Bluish Gray

2 x

Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard]

Pearl Gold

1 x

Plate 1 x 4

Dark Blue

2 x

Plate 2 x 3

Dark Blue

2 x

Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring]

Dark Blue

2 x

Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip]

Dark Purple

2 x

Dish 2 x 2 Inverted [Radar]

Black

2 x

Technic Disc 3 x 3

Black

2 x

Tile Round 1 x 1

Dark Pink

4 x

Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot]

Black

1 x

Technic Axle 4

Red

2 x

Wedge Plate 2 x 4

Dark Blue

2 x

Slope 30° 1 x 1 x 2/3 (Cheese Slope)

Dark Blue

2 x

Technic Pin with Friction Ridges Lengthwise and Towball - Round Pin Hole

Black

2 x

Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin

White

2 x

Plate Special 1 x 2 with Clip Horizontal on Side

Black

2 x

Plate Special 1 x 2 with Clip Horizontal on End

Black

2 x

Tile Round 1 x 1 Quarter

Dark Bluish Gray

2 x

Plate 2 x 3

Black

1 x

Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small

Black

3 x

Technic Brick Special 1 x 2 with Pin Hole and 1 x 2 Plate

Light Bluish Gray

1 x

Slope 30° 1 x 1 x 2/3 (Cheese Slope)

Dark Bluish Gray

1 x

Slope 30° 1 x 1 x 2/3 (Cheese Slope)

Black

2 x

Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip]

Red

2 x

Plate Round 1 x 1 with Open Stud

Pearl Gold

2 x

Plate Round 1 x 1 with Solid Stud

Dark Purple

2 x

Launcher Trigger, Weapon Gun Trigger

Dark Bluish Gray

2 x

Bar 1L with Clip [Cut Edges and One Side Hole] [Full Clip]

Dark Bluish Gray

1 x

Plate Round 1 x 1 with Solid Stud

Black

1 x

Brick Round 1 x 1 Open Stud

Trans-Light Blue

1 x

Plate Round 4 x 4 with Pin Hole

Dark Bluish Gray

1 x

Plate Special 1 x 2 Side Handle [Free Ends]

Black

1 x

Bracket 5 x 2 x 1 1/3 with Bottom Stud Holder

Black

1 x

Brick Curved 2 x 2 x 2/3 Two Studs and Curved Slope End

White

1 x

Technic Pin with Friction Ridges Lengthwise with No Center Slots

Black

3 x

Slope Inverted 45° 4 x 2 Double with 2 x 2 Recessed

Dark Bluish Gray

1 x

Missing pricing information on the following items.

	Color	Quantity
Weapon Sword, Broad with Trans-Red Blade pattern	Pearl Gold	1
Sticker Sheet for Set 71842-1	[No Color/Any Color]	1
Hips and Bright Green Legs with Dark Red Sash, Knee Caps, Robe Ends, Dark Green Trim print	Bright Green	1
Minifig Neckwear Shoulder Armour With Pearl Gold Dragon pattern	Bright Green	1
Hair Swept Back, Tan with Headband Pattern	Bright Green	1

Compare the value of buying Rontu the Master Dragon as a complete set versus the total value of all parts individually.

BrickLink
Condition	Timespan	Avg price	Items sold	Inventory value	Ratio
New	6 months	?	?		?
Used	6 months	?	?		?

Brick Owl
Condition	Timespan	Avg price	Inventory value	Ratio
New	Current			2.09
	6 months	?		?
	1 year			2.37
Used	Current	?		?

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.

Item		Price