# LEGO 31090-1 — Underwater Robot (2019)

Source: https://www.brickmissing.com/sets/31090-1-underwater-robot
Publisher: BrickMissing (https://www.brickmissing.com) — free LEGO parts checker. Not affiliated with the LEGO Group.

The LEGO Creator 3-in-1 31090 Underwater Robot invites deep-sea exploration with its versatile 207-piece build. This robust submersible robot includes highly posable joints, a large transparent domed helmet with a distinctive red robot eye, and integrated ballast tanks. Its powerful left arm sports a functional claw and drill, while the right arm features a grabber, perfect for retrieving a golden nugget from the detailed seabed with its sea plant. Reconfigure the dome by removing the robot eye to reveal a cockpit control center for further immersion. Beyond the main Underwater Robot, this set offers two alternate builds: a compact Submarine for swift underwater missions or a sturdy Underwater Crane, ready for heavy lifting and recovery operations, alongside its companion buildable manta ray.

## Set facts

- Set number: 31090-1
- Name: Underwater Robot
- Theme: Creator › 3 in 1
- Released: 2019
- Pieces: 207
- Distinct part + colour lots: 81
- Build difficulty: easy
- Repairability: 0.0% of this set's lots are hard to replace (0 of 81 part+colour combinations appear in three or fewer sets in the entire LEGO catalog).

## Complete parts list (81 lots, 207 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 | Bar Holder with Clip | White | 11090 | 6341465 | €0,12 |
| 2 | Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle | Dark Bluish Gray | 11214 | 6015356 | €0,29 |
| 8 | Plate Special 1 x 2 with Pin Hole on Top | Black | 11458 | 6114987 | €0,10 |
| 5 | Plate Special 1 x 2 with Clip Horizontal on Side | White | 11476 | 6313115 | €0,15 |
| 4 | Slope Curved 2 x 1 No Studs [1/2 Bow] | Dark Blue | 11477 | 6094143 | €0,06 |
| 1 | Plate Special 1 x 2 with 5.9mm Centre Side Towball | Dark Bluish Gray | 14417 | 6039479 | €0,16 |
| 2 | Plate Special 1 x 2 5.9mm Towball Socket | Light Bluish Gray | 14418 | 6043639 | €0,16 |
| 4 | Tile 2 x 2 Corner | Light Bluish Gray | 14719 | 6065824 | €0,06 |
| 4 | Tile Round 2 x 2 with Bottom Stud Holder | Dark Bluish Gray | 14769 | 6056296 | €0,07 |
| 2 | Slope Curved 2 x 2 x 2/3 | Yellow | 15068 | 6079007 | €0,13 |
| 1 | Technic Axle 5 with Stop | Reddish Brown | 15462 | 6159763 | €0,11 |
| 3 | Tile Round 2 x 2 with Hole | Light Bluish Gray | 15535 | 6179186 | €0,07 |
| 2 | Plate Round Half 3 x 6 with 1 x 2 Cutout | Light Bluish Gray | 18646 | 6132983 | €0,24 |
| 1 | Plate Special 1 x 2 with Handles on Ends | White | 18649 | 6249273 | €0,12 |
| 2 | Plate Special 1 x 2 with Pin Hole Underneath | Light Bluish Gray | 18677 | 6168633 | €0,07 |
| 2 | Tile Special 1 x 2 Grille with Bottom Groove | Light Bluish Gray | 2412b | 4211350 | €0,06 |
| 2 | Slope Curved 2 x 1 Inverted | Yellow | 24201 | 6167223 | €0,06 |
| 1 | Tile Special 1 x 2 with Handle | Red | 2432 | 243221 | €0,11 |
| 2 | Plate Special 1 x 1 Rounded with Handle | Black | 26047 | 6157554 | €0,06 |
| 1 | Technic Axle Towball | Light Bluish Gray | 2736 | 4211375 | €0,13 |
| 2 | Technic Pin with Friction Ridges Lengthwise and Center Slots | Black | 2780 | 278026 | — |
| 3 | Brick 1 x 2 | Yellow | 3004 | 300424 | €0,11 |
| 1 | Plant, Sea Grass | Dark Green | 30093 | 6269984 | €0,31 |
| 1 | Brick 1 x 4 | White | 3010 | 301001 | €0,16 |
| 2 | Plate 2 x 4 | Yellow | 3020 | 302024 | €0,15 |
| 6 | Plate 2 x 3 | Yellow | 3021 | 302124 | €0,13 |
| 4 | Plate 2 x 2 | Yellow | 3022 | 302224 | €0,10 |
| 1 | Plate 2 x 2 | White | 3022 | 302201 | €0,10 |
| 1 | Plate 2 x 2 | Dark Blue | 3022 | 6037890 | €0,10 |
| 5 | Plate 1 x 2 | Light Bluish Gray | 3023 | 4211398 | €0,08 |
| 2 | Brick Round 2 x 2 x 2 Robot Body, Axle Holder '+' Orientation | Red | 30361c | 4244747 | — |
| 2 | Brick Round 2 x 2 Dome Top, Hollow Stud | Red | 30367c | 4216657 | — |
| 2 | Slope 45° 2 x 4 | Yellow | 3037 | 4219911 | €0,17 |
| 2 | Bar 4L (Lightsaber Blade / Wand) | White | 30374 | 6116602 | €0,05 |
| 2 | Hinge Cylinder 1 x 2 Locking with 1 Finger and Axle Hole On Ends | Dark Bluish Gray | 30552 | 4210694 | — |
| 1 | Tile 2 x 2 with Groove | Light Bluish Gray | 3068b | 4211413 | €0,07 |
| 1 | Tile 1 x 2 with Groove | Dark Blue | 3069b | 4528488 | €0,07 |
| 1 | Tile 1 x 2 with Gauges, '82', and Buttons print | Light Bluish Gray | 3069bpr0301 | 6329585 | €0,23 |
| 4 | Plate Special 3 x 2 with Rounded End, Hole | Yellow | 3176 | 4188313 | €0,12 |
| 2 | Technic Axle and Pin Connector Angled #1 | Red | 32013 | 6332580 | €0,08 |
| 2 | Technic Beam 1 x 3 Thick | Red | 32523 | 4153718 | €0,10 |
| 2 | Rock 1 1/3 x 1 1/3 x 1 | Pearl Gold | 35646 | 6207259 | — |
| 4 | Slope Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] | Yellow | 3660 | 366024 | €0,15 |
| 2 | Bracket 1 x 1 - 1 x 1 Inverted | Dark Bluish Gray | 36840 | 6225494 | €0,06 |
| 4 | Bracket 1 x 1 - 1 x 1 | Medium Blue | 36841 | 6236112 | — |
| 4 | Technic Plate 2 x 4 [3 Holes] | White | 3709 | 370901 | €0,13 |
| 4 | Plate 1 x 4 | Yellow | 3710 | 371024 | €0,12 |
| 4 | Plate 1 x 4 | Dark Bluish Gray | 3710 | 4211001 | €0,12 |
| 3 | Brick Round 2 x 2 with Axle Hole | Dark Bluish Gray | 3941 | 4249139 | €0,11 |
| 3 | Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) | Tan | 4032a | 4140562 | €0,06 |
| 4 | Technic Pin 1/2 | Black | 4274 | 4143005 | €0,05 |
| 2 | Technic Axle Pin with Friction Ridges Lengthwise | Black | 43093 | 4206482 | €0,06 |
| 4 | Flag 2 x 2 Trapezoid with Flat Area between Clips | Dark Blue | 44676 | 4261792 | — |
| 2 | Dish 2 x 2 Inverted [Radar] | Trans-Neon Orange | 4740 | 3006347 | — |
| 6 | Technic Rotation Joint Ball Loop with Two Perpendicular Pins with Friction | Black | 47455 | 4213374 | €0,33 |
| 4 | Technic Brick Special 2 x 2 with Pin Hole, Rotation Joint Socket | Dark Bluish Gray | 48169 | 6278974 | €1,19 |
| 6 | Technic Brick Special 2 x 2 with Pin Hole, Rotation Joint Ball Half [Vertical Side] | Dark Bluish Gray | 48171 | 6492115 | €0,71 |
| 1 | Technic Brick Special 2 x 2 with Pin Hole, with 2 Rotation Joint Sockets | Black | 48172 | 6296186 | €0,96 |
| 1 | Bar 1L with Clip [Cut Edges and One Side Hole] [Gap in Clip] | Dark Bluish Gray | 48729b | 4289542 | — |
| 1 | Windscreen 6 x 6 x 3 Canopy Half Sphere with Dual 2 Fingers | Trans-Clear | 50747 | 4530764 | — |
| 1 | Grille / Spoiler with 1 x 2 Plate, 2 x 2 Anti-studs (Racers Car) | White | 50949 | 6249277 | €0,28 |
| 1 | Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small | Black | 53451 | 6270103 | €0,07 |
| 1 | Wheel 18 x 14 with Pin Hole, Fake Bolts and Shallow Spokes | Yellow | 55981 | 6109681 | €0,19 |
| 2 | Flexible Ribbed Hose 8mm Ends 19L | Flat Silver | 57539 | 6044636 | €0,56 |
| 4 | Window 1 x 2 x 2 Plane, Hollow Studs, Single Hole Top and Bottom for Glass | Yellow | 60032 | 4521134 | — |
| 4 | Brick Arch 1 x 3 x 2 Curved Top | Yellow | 6005 | 4652261 | €0,15 |
| 4 | Brick Special 1 x 1 with Clip Horizontal | Black | 60476 | 6320309 | €0,19 |
| 1 | Plate Special 1 x 2 with Handle on End [Closed Ends] | Black | 60478 | 4515368 | €0,06 |
| 4 | Slope 18° 2 x 1 x 2/3 with 4 Slots / Grate | Black | 61409 | 4541191 | €0,06 |
| 1 | Turntable 4 x 4 Square Base, Locking | Light Bluish Gray | 61485 | 6045718 | €0,25 |
| 1 | Plate Special 2 x 2 with Bar Frame Octagonal, Reinforced, Completely Round Studs | Black | 75937 | 6018805 | €0,19 |
| 1 | Plate Round 1 x 1 with Open Stud | Pearl Gold | 85861 | 6190252 | €0,04 |
| 2 | Slope 30? 1 x 2 x 2/3 | Light Bluish Gray | 85984 | 4568637 | €0,07 |
| 1 | Brick Round 4 x 4 Centre Hole | Black | 87081 | 4558957 | €0,36 |
| 1 | Creature Body Part, Horn (Unicorn) | Flat Silver | 89522 | 6214214 | €0,11 |
| 4 | Large Figure Weapon Claw, with Clip | Flat Silver | 92220 | 4659335 | — |
| 2 | Slope Curved 4 x 2 No Studs | Yellow | 93606 | 6079001 | €0,24 |
| 2 | Tile Round 1 x 1 | Trans-Light Blue | 98138 | 6274739 | €0,05 |
| 3 | Arm Mechanical with Clip [Thick Support] | Black | 98313 | 6276867 | €0,18 |
| 2 | Spoiler 2 x 4 with Handle [Plain] | Yellow | 98834 | 6539770 | €0,22 |
| 7 | Bracket 1 x 2 - 2 x 2 Inverted | Light Bluish Gray | 99207 | 4654580 | €0,10 |

## Notes

- Track which of these parts you own and see what is missing: https://www.brickmissing.com/sets/31090-1-underwater-robot
- 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/31090-1-underwater-robot