Dive into Adventure!
With Lloyd's Hydro Mech

Join Scuba Lloyd in his battle against the Maaray Guard! This 228-piece set brings the Ninjago: Seabound TV series to life.

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🏛 Ninjago
Set #71750

Lloyd's Hydro Mech

Lloyd's Hydro Mech is an awesome underwater adventure in a box.

🏆 Best For: Great for kids aged 7+ and Ninjago enthusiasts ⏱ 2.0 hr build 🧩 228 pcs 🎂 Ages 7+
★★★☆☆ 3.7 from 1 reviews

Fans appreciate the set's posability and the inclusion of Scuba Lloyd, but some feel the mech design is a bit simplistic for older builders. The set is generally well-received as a fun, playable model at a reasonable price point.

📝 Our Take

Lloyd's Hydro Mech is an awesome underwater adventure in a box. This set brings the Ninjago Seabound storyline to life, letting kids and adult fans alike dive into the action with a posable mech and cool minifigures.

This set is perfect for Ninjago fans and kids who love mechs. The build is straightforward enough for younger builders, but still engaging, and the final model is great for play and display.

Skip this if you're looking for a challenging, complex build. For older builders seeking a more intricate mech experience, consider larger LEGO mechs from themes like Marvel or Overwatch.

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Try asking:
How does this mech compare to other Ninjago mechs in terms of size and playability? What are some creative ways to expand this set with other Ninjago Seabound sets? How does the value of this set compare to other retired Ninjago sets? Is this set better for play or display, and how durable is the final model?

🧱 Building Experience

🧩
228
Pieces
2.0h
Build Time
📊
Beginner
Difficulty
👤
7+
Ages
Build Highlights:
  • Easy-to-follow instructions
  • Simple Technic connections for stability
  • Fun color scheme and underwater details
  • Good posability for dynamic play

📈 Investment Analysis

→ Price stable
B-
Investment Grade
⏳ Active
Lloyd's Hydro Mech, being a retired Ninjago set, has moderate investment potential. The Ninjago theme maintains consistent popularity, especially among younger collectors. Its relatively low piece count and initial price point mean it won't likely skyrocket in value, but complete, unopened sets should see gradual appreciation, especially if the Seabound storyline remains popular. The presence of exclusive minifigure variants adds some appeal.

Not Financial Advice: Content is for educational purposes only. Past performance doesn't guarantee future results. Full disclaimer

📖 About This Set

Ninja fans can enjoy nonstop fun recreating scenes from the NINJAGO®: Seabound TV series with the supercool Lloyd’s Hydro Mech (71750). The ninja playset features a posable mech toy with a large sword in one hand and a hydraulic claw in the other to inspire great role-play action.

Creative toys for fantasy adventures
The underwater playset has 2 minifigures: Scuba Lloyd with a mask, air tank and flippers, and the villainous Maaray Guard. Kids can play out their own adventures to see which one of this warring pair can win the wave amulet that is also included in the set.

LEGO® sets for developmental fun.
NINJAGO playsets allow kids to escape to an incredible fantasy world where they can learn about the ninja values of courage, self-sacrifice and family through enriching role play. They can choose to act out their make-believe stories with an amazing collection of cool toys including dragons, mechs and vehicles.

  • LEGO® NINJAGO® Lloyd’s Hydro Mech (71750) is a fantastic underwater playset with a posable mech for kids to enjoy hours of exciting adventures.
  • Ninja playset includes 2 minifigures: Scuba Lloyd with a mask, air tank and flippers, and a Maaray Guard. The pair can fight over the precious wave amulet that is also included in the set.
  • Mech toy has posable legs, a cockpit that opens for Lloyd to ride inside, a large sword in one hand and a hydraulic claw in the other for entering into underwater combat.
  • This battle playset offers a rewarding build and makes a great unexpected treat for any ninja-loving child aged 7 and up.
  • The impressive mech toy stands over 6.5 in. (17 cm) high – the perfect portable size to play with at home or for kids to take wherever they go.
  • Discover other sets based on the NINJAGO®: Seabound TV series, including Ninja Sub Speeder (71752), Water Dragon (71754), Hydro Bounty (71756) and Temple of the Endless Sea (71755).
  • LEGO® NINJAGO® features an amazing collection of fun-filled playsets to help kids step away from their screens and learn positive life skills through imaginative role play.
  • For more than 6 decades LEGO® bricks have been made from high-quality materials to ensure they consistently connect and pull apart – ninja skills and strength not needed!
  • LEGO® building bricks meet stringent safety standards, giving you peace of mind for your kids.

Compare Similar Sets

This set offers a smaller, more affordable entry point into the world of Ninjago mechs compared to larger sets like the Fire Stone Mech (71720-1). Its simplicity makes it ideal for younger builders, while older fans might prefer the complexity and size of sets like the LEGO Ninjago Legacy Golden Mech (70666-1), if they can find it on the secondary market. It's a good choice for those who want a quick and satisfying build without a huge investment.

2 Minifigures Included

The set includes a Scuba Lloyd minifigure, exclusive to the Seabound subtheme, making it a desirable addition for collectors. The Maaray Guard is a common antagonist figure.

📦 Full Parts Inventory - 96 unique parts • 217 total pieces

Minifig Footwear Flipper [Thick] Minifig Footwear ...
Part #: 10190 Black
Minifig Footwear Flipper [Thick] Minifig Footwear ...
Part #: 10190 Dark Turquoise
Technic Pin Connector Hub with 2 Perpendicular Axles Technic Pin Conne...
Part #: 10197 Black
Plate Special 2 x 2 with 1 Pin Hole [Complete Underside Rib] Plate Special 2 x...
Part #: 10247 Dark Bluish Gray
Bar Holder with Clip Bar Holder with Clip
Part #: 11090 Black
Bracket 5 x 2 x 1 1/3 with Holes, Pin Bottom Bracket 5 x 2 x 1...
Part #: 11215 Black
Slope Curved 2 x 1 No Studs [1/2 Bow] Slope Curved 2 x ...
Part #: 11477 Dark Bluish Gray
Plate Special 1 x 2 5.9mm Towball Socket Plate Special 1 x...
Part #: 14418 Light Bluish Gray
Plate Special 1 x 2 5.9mm Centre Side Towball Socket Plate Special 1 x...
Part #: 14704 Light Bluish Gray
Tile 2 x 2 Corner Tile 2 x 2 Corner
Part #: 14719 Black
Slope Curved 2 x 2 x 2/3 Slope Curved 2 x ...
Part #: 15068 Bright Light Orange
Slope Curved 2 x 2 x 2/3 Slope Curved 2 x ...
Part #: 15068 Black
Tile Special 1 x 1 with Clip with Rounded Edges Tile Special 1 x ...
Part #: 15712 Sand Green
Tile Special 1 x 1 with Clip with Rounded Edges Tile Special 1 x ...
Part #: 15712 Pearl Gold
Technic Brick Special 2 x 2 with 10.2mm Balls with Holes and Axle Hole Technic Brick Spe...
Part #: 17114 Dark Bluish Gray
Plate Special 1 x 2 with Handles on Ends Plate Special 1 x...
Part #: 18649 Black
Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard] Weapon Sword / Ka...
Part #: 21459 Flat Silver
Tile Special 2 x 3 Pentagonal Tile Special 2 x ...
Part #: 22385 Sand Green
Wedge Sloped 4 x 4 Pointed Wedge Sloped 4 x ...
Part #: 22391 Sand Green
Plate Special 1 x 2 with End Towball Plate Special 1 x...
Part #: 22890 Dark Bluish Gray
Bar Holder with Hole and Bar Handle Bar Holder with H...
Part #: 23443 Light Bluish Gray
Slope Curved 2 x 1 Inverted Slope Curved 2 x ...
Part #: 24201 Light Bluish Gray
Wedge Plate 2 x 2 Left Wedge Plate 2 x 2...
Part #: 24299 Sand Green
Wedge Plate 2 x 2 Right Wedge Plate 2 x 2...
Part #: 24307 Sand Green
Tile Special 1 x 2 with Handle Tile Special 1 x ...
Part #: 2432 Black
Tassel with 1 x 1 Round Stud Tassel with 1 x 1...
Part #: 25375 Pearl Gold
Plate Special 1 x 2 Side Handle [Free Ends] Plate Special 1 x...
Part #: 2540 Pearl Gold
Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Plate Round 2 x 2...
Part #: 2654 Trans-Clear
Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Plate Round 2 x 2...
Part #: 2654 Black
Wedge Plate 2 x 2 Cut Corner Wedge Plate 2 x 2...
Part #: 26601 Light Bluish Gray
Flexible Ribbed Hose 8mm Ends 10L Flexible Ribbed H...
Part #: 27328 Flat Silver
Bracket 1 x 2 - 1 x 4 [Rounded Corners at Bottom, Square Corners at Top] Bracket 1 x 2 - 1...
Part #: 28802 Black
Brick Special 1 x 2 Palisade [aka Log] Brick Special 1 x...
Part #: 30136 Light Bluish Gray
Plate Special 2 x 4 with Pins Plate Special 2 x...
Part #: 30157 Light Bluish Gray
Plate 2 x 4 Plate 2 x 4
Part #: 3020 Light Bluish Gray
Plate 2 x 3 Plate 2 x 3
Part #: 3021 Dark Bluish Gray
Plate 1 x 2 Plate 1 x 2
Part #: 3023 Bright Light Orange
Plate 1 x 2 Plate 1 x 2
Part #: 3023 Black
Plate 1 x 2 Plate 1 x 2
Part #: 3023 Light Bluish Gray
Plate 1 x 1 Plate 1 x 1
Part #: 3024 Black
Plate 2 x 8 Plate 2 x 8
Part #: 3034 Black
Technic Axle 2 Notched Technic Axle 2 No...
Part #: 32062 Red
Plate Round 1 x 1 with Hollow Stud and Horizontal Bar 1L Plate Round 1 x 1...
Part #: 32828 Black
Weapon Sword Hilt with Dragon Head Weapon Sword Hilt...
Part #: 36017 Black
Brick 1 x 3 Brick 1 x 3
Part #: 3622 Light Bluish Gray
Slope Inverted 45° 2 x 1 Slope Inverted 45...
Part #: 3665 Black
Technic Brick 1 x 2 [1 Pin Hole] Technic Brick 1 x...
Part #: 3700 Light Bluish Gray
Plate 1 x 4 Plate 1 x 4
Part #: 3710 Black
Slope Inverted 33° 3 x 2 [Connections between Studs] Slope Inverted 33...
Part #: 3747b Black
Plate 2 x 10 Plate 2 x 10
Part #: 3832 Light Bluish Gray
Brick Round 2 x 2 with Axle Hole Brick Round 2 x 2...
Part #: 3941 Light Bluish Gray
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Plate Round 2 x 2...
Part #: 4032a White
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Plate Round 2 x 2...
Part #: 4032a Black
Plate Special 1 x 4 with 2 Studs with Groove [New Underside] Plate Special 1 x...
Part #: 41740 Reddish Brown
Technic Pin 1/2 Technic Pin 1/2
Part #: 4274 Blue
Flag 2 x 2 Trapezoid with Flat Area between Clips Flag 2 x 2 Trapez...
Part #: 44676 Sand Green
Bracket 1 x 2 - 2 x 2 Bracket 1 x 2 - 2...
Part #: 44728 Dark Tan
Plate Special 1 x 2 [Open O Top Clip] Plate Special 1 x...
Part #: 44861 Dark Bluish Gray
Wedge Curved 2 x 3 x 2/3 Two Studs, Wing End Wedge Curved 2 x ...
Part #: 47456 Black
Wedge Sloped 45° 2 x 4 Triple Wedge Sloped 45° ...
Part #: 47759 Dark Bluish Gray
Plate Special 1 x 2 [Side Handle Closed Ends] Plate Special 1 x...
Part #: 48336 Black
Bar 1L with Clip [Cut Edges and One Side Hole] [Gap in Clip] Bar 1L with Clip ...
Part #: 48729b Black
Technic Beam 1 x 2 with Ball Joint Angled Technic Beam 1 x ...
Part #: 50923 Dark Bluish Gray
Slope Curved 3 x 1 No Studs Slope Curved 3 x ...
Part #: 50950 Bright Light Orange
Wedge Plate 2 x 4 Wedge Plate 2 x 4
Part #: 51739 Black
Hinge Cylinder 1 x 2 Locking with 1 Finger and Axle Hole On Ends [No Side Slots] Hinge Cylinder 1 ...
Part #: 53923 Black
Slope 30° 1 x 1 x 2/3 (Cheese Slope) Slope 30° 1 x 1 x...
Part #: 54200 Bright Light Orange
Hinge Brick 1 x 2 Locking with 2 Fingers Horizontal End, 7 Teeth Hinge Brick 1 x 2...
Part #: 54672 Light Bluish Gray
Technic Axle Connector Smooth [with x Hole + Orientation] Technic Axle Conn...
Part #: 59443 Light Bluish Gray
Cone 1 x 1 [Top Groove] Cone 1 x 1 [Top G...
Part #: 59900 Pearl Gold
Plate Special 1 x 2 with Clips Horizontal [Open O Clips] Plate Special 1 x...
Part #: 60470b Black
Plate Special 1 x 2 with Handle on End [Closed Ends] Plate Special 1 x...
Part #: 60478 Light Bluish Gray
Slope 65° 2 x 1 x 2 Slope 65° 2 x 1 x 2
Part #: 60481 Sand Green
Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip] Plate Special 1 x...
Part #: 60897 Black
Technic Pin with Friction Ridges Lengthwise with No Center Slots Technic Pin with ...
Part #: 61332 Black
Bar 6L with Stop Ring Bar 6L with Stop ...
Part #: 63965 Black
Technic Beam 1 x 2 with Ball Joint Straight, Smooth Ball Technic Beam 1 x ...
Part #: 64276 Black
Technic Axle and Pin Connector Perpendicular Technic Axle and ...
Part #: 6536 Black
Technic Pin with Friction Ridges Lengthwise and Towball - Round Pin Hole Technic Pin with ...
Part #: 66906 Red
Slope Curved 4 x 3 with 3 Layers, 1 x 3 Cutout on Underside Slope Curved 4 x ...
Part #: 66955 Black
Windscreen with Pearl Gold Frame Mold Windscreen with P...
Part #: 69564pr0001 Trans-Light Blue
Equipment Disc Amulet Dragon Shape with Opal Trans-Light Blue Flames Pattern Equipment Disc Am...
Part #: 69567pat0002 Pearl Gold
Fin Jagged with Axle Hole Fin Jagged with A...
Part #: 76919 Pearl Gold
Sticker Sheet for Set 71750-1 Sticker Sheet for...
Part #: 78482 [No Color/Any Color]
Plate Round 1 x 1 with Open Stud Plate Round 1 x 1...
Part #: 85861 Pearl Gold
Technic Brick 1 x 2 with Hole and Dual Beam Extensions Technic Brick 1 x...
Part #: 85943 Dark Bluish Gray
Slope 30° 1 x 2 x 2/3 Slope 30° 1 x 2 x...
Part #: 85984 Sand Green
Technic Axle 4 with Stop Technic Axle 4 wi...
Part #: 87083 Dark Bluish Gray
Aircraft Fuselage Curved Aft Section 6 x 10 Bottom Aircraft Fuselage...
Part #: 87616 Dark Green
Technic Brick Special 2 x 2 with Ball Socket Wide and Axle Hole Technic Brick Spe...
Part #: 92013 Black
Panel 1 x 2 x 1 with Rounded Corners and Central Divider Panel 1 x 2 x 1 w...
Part #: 93095 Reddish Brown
Slope Curved 4 x 1 Double with No Studs Slope Curved 4 x ...
Part #: 93273 Black
Technic Axle Connector 2 x 3 with Ball Socket, Open Lower Axle Holes Technic Axle Conn...
Part #: 93571 Black
Slope Curved 3 x 4 x 2/3 Triple Curved with 2 Sunk Studs Slope Curved 3 x ...
Part #: 93604 Bright Light Orange
Brick Round 2 x 2 Truncated Cone Brick Round 2 x 2...
Part #: 98100 Light Bluish Gray
Propeller 1 Blade 2 x 16 with Axle Propeller 1 Blade...
Part #: 98135 Pearl Gold
Tile Round 1 x 1 Tile Round 1 x 1
Part #: 98138 Trans-Clear
Weapon Sai Weapon Sai
Part #: 98139 Pearl Titanium
Pneumatic Hose Connector with Axle Connector Pneumatic Hose Co...
Part #: 99021 Dark Bluish Gray
Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised Plate Special 2 x...
Part #: 99206 Light Bluish Gray
Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised Plate Special 2 x...
Part #: 99206 Tan
Bracket 1 x 2 - 2 x 2 Inverted Bracket 1 x 2 - 2...
Part #: 99207 Black
Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot] Tile Special 1 x ...
Part #: 99563 Pearl Gold
Bracket 1 x 2 - 1 x 2 Inverted Bracket 1 x 2 - 1...
Part #: 99780 Dark Tan
This set features a good selection of Sand Green and Pearl Gold elements, useful for builders looking to add unique colors to their parts collection. The Technic connectors are also handy for creating sturdy models.

💎 Notable Parts

Pearl Gold Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot] (5x) $1.25
Dark Tan Bracket 1 x 2 - 2 x 2 (4x) $0.40
Sand Green Tile Special 2 x 3 Pentagonal (4x) $0.60
Black Technic Brick Special 2 x 2 with Ball Socket Wide and Axle Hole (4x) $0.80
Est. BrickLink Part Value
$3.05

💡 MOC Potential

🤖 Larger, more detailed mech with added articulation
🚢 Underwater vehicle or submarine
🌳 Aquatic creature or underwater base

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📖 Building Instructions 2

Lloyd's Hydro Mech Instructions
BI 3105, 80+4, 71750 V29
Download PDF
Lloyd's Hydro Mech Instructions
BI 3105, 80+4, 71750 V39
Download PDF

Charts Inventory Statistics

96
Unique Parts
217
Total Pieces
2
Minifigures
Inventory Version: 1