LEGO Set 10921 Super Heroes Lab: Pieces, Year, Figures

Specifications

Set number	10921
Release year	2020
Piece count	30
Minifigures	0
Theme	Duplo
Subtheme	Marvel
Building instructions	Download the instructions on lego.com

Where to buy set 10921

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LEGO set 10921 Super Heroes Lab, released in 2020 as part of the Duplo line, has 30 pieces. Its inventory breaks down into 23 different lots, across 11 colors.

Inventory of set 10921

The inventory of set 10921 lists 30 pieces, spare parts excluded: 23 different lots (one shape in one color) for 20 part shapes.

Colors of set 10921

Main color: red, making up 40% of the parts, followed by yellow (13%) and trans-light blue (10%).

Color	Parts	Share
Red	12	40%
Yellow	4	13%
Trans-Light Blue	3	10%
Black	2	6.7%
Dark Bluish Gray	2	6.7%
Light Bluish Gray	2	6.7%
Bright Light Orange	1	3.3%
Flat Silver	1	3.3%
White	1	3.3%
Blue	1	3.3%
Other colors (1)	1	3.3%

Part types

Type	Parts	Share
Duplo, Quatro and Primo	27	90%
Non-Buildable Figures (Duplo, Fabuland, etc)	3	10%

Most common parts in set 10921

Part	Color	Quantity
Duplo Brick 2 x 2 3437	Red	3
Duplo Plate 2 x 4 40666	Yellow	2
Duplo Plate 2 x 4 40666	Dark Bluish Gray	2
Duplo Brick 1 x 2 x 2 with Bottom Tube 76371	Light Bluish Gray	2
Duplo Brick 1 x 2 x 2 with Bottom Tube 76371	Trans-Light Blue	2
Duplo Brick 2 x 4 Curved Top 98223	Red	2

9 of the 20 part shapes in this set have their own page on Setopedia, with their colors, element numbers and the other sets that use them. See all LEGO parts

Exclusive parts in set 10921

4 part shapes in set 10921 appear in no other set in the catalog, most often printed elements, stickers or molds specific to the model. If one gets lost, you will need to look for it individually, for example on BrickLink, rather than in another set. Counting colors, 5 lots in the set are not found in any other set.

Part	Color
Duplo Figure with Helmet, with Red Legs and Gold Armor Print (Iron Man) 65954pr0108	Red
Duplo Figure with Mask, with Blue Legs and Red and White Armor, and Star Print (Captain America) 65953pr0109	Blue
Duplo Motorcycle with Rubber Wheels, White Handlebars, Windscreen and Headlights with Captain America Logo Print 93702c01pr0007	Dark Azure
Duplo Disk with White Circle and White Star in Blue Circle Print (Captain America's Shield) 27372pr0007	Red

Rebuilding set 10921 from another set

Share of the parts of set 10921 found in each of these similarly sized sets, counting shape, colour and quantity:

Set	Found	Parts	Release year
10464 Team Spidey Webquarters	27%	65	2026

No similarly sized set goes above 27%: the model relies on a little-shared assortment, most of which has to be gathered piece by piece.

Size of set 10921 within its line

With 30 pieces, set 10921 ranks #508 out of 522 Duplo sets in our database, which have an average of 69 parts. Among the 490 sets released in 2020, it ranks #486. That is less than half the average Duplo set size.

Frequently asked questions

How many pieces does LEGO set 10921 Super Heroes Lab have?

LEGO set 10921 Super Heroes Lab has 30 pieces. It was released in 2020 as part of the Duplo theme.

What year was LEGO set 10921 released?

Set 10921 Super Heroes Lab was released in 2020 and belongs to the Duplo theme.

Which minifigures are included in set 10921?

LEGO set 10921 Super Heroes Lab does not include any minifigures.

Where can I find the building instructions for set 10921?

The instructions for LEGO set 10921 Super Heroes Lab can be downloaded free as a PDF from the official lego.com website, under “Building Instructions”, by entering the number 10921.

What is the main color of LEGO set 10921?

Red, with 12 out of 30 pieces, or 40%. Next come yellow (13%) and trans-light blue (10%).

How many different parts does set 10921 contain?

Set 10921 has 23 different lots (one shape in one color), covering 20 part shapes. Most common part: Duplo Brick 2 x 2 in red, with 3 copies.

Does LEGO set 10921 contain any exclusive parts?

Yes: 4 part shapes exist in no other set, for example: Duplo Figure with Helmet, with Red Legs and Gold Armor Print (Iron Man).

Which similarly sized set contains the most parts from set 10921?

Set 10464 Team Spidey Webquarters, released in 2026: it supplies 27%, counting shapes, colors and quantities.