Underwater Robot (31090-1) is a Creator 3-in-1 LEGO set released in 2019 with 207 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing Creator 3-in-1 sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 81 unique part types.
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Buying checklist
Quick context before you buy this set used or verify a marketplace listing.
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Release year
2019 (7 years ago — may be retired)
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Catalog scale
207 parts listed · 81 inventory lines tracked
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Minifigures
No minifigs in inventory (brick-only or Technic set)
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Build manual
Digital booklet available on this page — use it to verify bag contents
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Shipping weight (est.)
~348 g for parts inventory (excludes box/minifig packaging)
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Before you buy used
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Market value
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Building instructions
3 official booklets — read on BrickID
Book 1 of 3 · US Letter Book 2 of 3 · US Letter Book 3 of 3 · US Letter
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Parts in this set
81 parts · page 1 of 2 · updating…
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Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small53451 · ×1 · Black -
![Arm Mechanical with Clip [Thick Support]](https://cdn.rebrickable.com/media/parts/elements/6276867.jpg)
Arm Mechanical with Clip [Thick Support]98313 · ×3 · Black -
![Bar 1L with Clip [Cut Edges and One Side Hole] [Gap in Clip]](https://cdn.rebrickable.com/media/parts/elements/4289542.jpg)
Bar 1L with Clip [Cut Edges and One Side Hole] [Gap in Clip]48729b · ×1 · Dark Bluish Gray -
Bar 4L (Lightsaber Blade / Wand)30374 · ×2 · White -
Bar Holder with Clip11090 · ×1 · White -
Bracket 1 x 1 - 1 x 136841 · ×4 · Medium Blue -
Bracket 1 x 1 - 1 x 1 Inverted36840 · ×2 · Dark Bluish Gray -
Bracket 1 x 2 - 2 x 2 Inverted99207 · ×7 · Light Bluish Gray -
Brick 1 x 23004 · ×3 · Yellow -
Brick 1 x 43010 · ×1 · White -
Brick Arch 1 x 3 x 2 Curved Top6005 · ×4 · Yellow -
![Brick Curved 2 x 1 No Studs [1/2 Bow]](https://cdn.rebrickable.com/media/parts/elements/6094143.jpg)
Brick Curved 2 x 1 No Studs [1/2 Bow]11477 · ×4 · Dark Blue -
Brick Curved 2 x 2 x 2/315068 · ×2 · Yellow -
Brick Curved 4 x 2 No Studs93606 · ×2 · Yellow -
Brick Curved Inverted 2 x 124201 · ×2 · Yellow -
Brick Round 2 x 2 Dome Top, Hollow Stud30367c · ×2 · Red -
Brick Round 2 x 2 with Axle Hole3941 · ×3 · Dark Bluish Gray -
Brick Round 2 x 2 x 2 Robot Body, Axle Holder '+' Orientation30361c · ×2 · Red -
Brick Round 4 x 4 Centre Hole87081 · ×1 · Black -
Brick Sloped 18° 2 x 1 x 2/3 with 4 Slots / Grate61409 · ×4 · Black -
Brick Sloped 30° 1 x 2 x 2/385984 · ×2 · Light Bluish Gray -
Brick Sloped 45° 2 x 43037 · ×2 · Yellow -
![Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]](https://cdn.rebrickable.com/media/parts/elements/366024.jpg)
Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]3660 · ×4 · Yellow -
Brick Special 1 x 1 with Clip Horizontal60476 · ×4 · Black -
Creature Body Part, Horn (Unicorn)89522 · ×1 · Flat Silver -
![Dish 2 x 2 Inverted [Radar]](https://cdn.rebrickable.com/media/parts/elements/3006347.jpg)
Dish 2 x 2 Inverted [Radar]4740 · ×2 · Trans-Neon Orange -
Flag 2 x 2 Trapezoid with Flat Area between Clips44676 · ×4 · Dark Blue -
Flexible Ribbed Hose 8mm Ends 19L57539 · ×2 · Flat Silver -
Grille / Spoiler with 1 x 2 Plate, 2 x 2 Anti-studs (Racers Car)50949 · ×1 · White -
Hinge Cylinder 1 x 2 Locking with 1 Finger and Axle Hole On Ends30552 · ×2 · Dark Bluish Gray -
Large Figure Weapon Claw, with Clip92220 · ×4 · Flat Silver -
Plant, Sea Grass30093 · ×1 · Dark Green -
Plate 1 x 23023 · ×5 · Light Bluish Gray -
Plate 1 x 43710 · ×4 · Yellow -
Plate 1 x 43710 · ×4 · Dark Bluish Gray -
Plate 2 x 23022 · ×4 · Yellow -
Plate 2 x 23022 · ×1 · White -
Plate 2 x 23022 · ×1 · Dark Blue -
Plate 2 x 33021 · ×6 · Yellow -
Plate 2 x 43020 · ×2 · Yellow -
Plate Round 1 x 1 with Open Stud85861 · ×1 · Pearl Gold -
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)4032a · ×3 · Tan -
Plate Round Half 3 x 6 with 1 x 2 Cutout18646 · ×2 · Light Bluish Gray -
Plate Special 1 x 1 Rounded with Handle26047 · ×2 · Black -
Plate Special 1 x 2 5.9mm Towball Socket14418 · ×2 · Light Bluish Gray -
Plate Special 1 x 2 with 5.9mm Centre Side Towball14417 · ×1 · Dark Bluish Gray -
Plate Special 1 x 2 with Clip Horizontal on Side11476 · ×5 · White -
![Plate Special 1 x 2 with Handle on End [Closed Ends]](https://cdn.rebrickable.com/media/parts/elements/4515368.jpg)
Plate Special 1 x 2 with Handle on End [Closed Ends]60478 · ×1 · Black