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Set 31090 Underwater Robot
Creator 3-in-1

Underwater Robot

The Underwater Robot, set 31090, belongs to the LEGO® Creator 3-in-1 line, where the same 207 pieces rebuild into three separate models. With no minifigures included, the model itself is the focus: a compact robot in yellow, black, light grey and dark grey. At 81 unique parts, it offers more variety than its size might suggest.

Set number
31090
Year
2019
Pieces
207
Minifigures
0
Theme
Creator 3-in-1
Different parts
81
What can I build with it?

View the official building instructions at LEGO® ↗

Parts list 81

As BrickLink list (XML)

Import on BrickLink: Wanted → Upload, upload the file (or paste its content), pick a Wanted List and add the parts.

Spare parts (8)

These extra parts come with the set in case one gets lost.

Description

Three builds, one box

The Creator 3-in-1 concept is straightforward: the same 207 pieces rebuild into three different models, though only one stands at a time. That raises the play value well beyond a single fixed model, but it also means following the instructions carefully during each rebuild. For builders who enjoy starting fresh rather than keeping one model on a shelf permanently, that trade-off is exactly the point. Anyone with the time can build all three versions in turn, comparing the different construction approaches directly against each other.

A yellow, black and grey colour code

Of the 207 pieces, 81 are unique parts, a solid amount of variety for a set this size. The yellow, black, light grey and dark grey palette is typical of LEGO®'s technical and robot-style models, and it carries through recognisably across all three build options. Anyone planning to reuse the pieces in their own creations can check the full parts list on this page for every individual piece. The moving joints and connectors in particular appear in several shapes, since each build option makes its own demands on articulation.

A model built for construction, not role play

Because 31090 skips minifigures entirely, the whole set is built around construction rather than characters or story. That makes it a good fit for builders who enjoy mechanical detail, though it offers less scope for role play than comparable City or Ninjago sets. The contrast shows most clearly across the three build options, which share the same core parts but produce noticeably different proportions and details. For parents who prefer construction-focused play over role play, that is a clear advantage over more figure-heavy sets.

Where it sits in the Creator range

At 207 pieces, 31090 counts among the more compact sets in the 2019 Creator 3-in-1 wave. It works well as an entry point into the range before moving on to larger 3-in-1 models with considerably more parts. For collectors focused on technical themes, the parts list also makes a useful starting point when searching for specific shapes or colours for their own builds. Builders who move on to larger Creator 3-in-1 sets later will recognise many of the same techniques here, from moving joints to panelling.

FAQ

What does 3-in-1 mean for set 31090?
The same 207 pieces can be rebuilt into three different models, though only one stands at a time.
Does the set include any minifigures?
No, 31090 has no minifigures — the focus is entirely on the model itself.
Which colours define the set?
Yellow, black, light grey and dark grey run through all three possible builds.

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