Mattel Brick Shop Masters of the Universe Castle Grayskull Building Set

Building: Mattel Brick Shop Masters of the Universe Castle Grayskull is a buildable castle scene with NanoWorld figures and movable display features. It is aimed at builders and collectors who want to recreate battles, though the listing gives conflicting model and piece-count details that are worth resolving before purchase.

At a glance

Buildable Castle Grayskull scene with an inner sanctum and rotating turrets.
Listing describes 16 one-inch NanoWorld figures, including He-Man and Skeletor, with swappable poses.
Special-effect parts and extra pieces are described for posing figures mid-air.
Mattel says the pieces combine with its own sets and other name brands.

Price

$39.99Save 38%

Reference price: ~~$64.99~~

Price checked: Nov 14, 2026

View offer Ahead of Black FridayExplore the selection

Often bought together

Mattel Brick Shop Masters of the Universe Clash at Snake Mountain | Building Set, 636 Pieces and 12 Figures, Skeletor and He-Man, Gift Adult Collectors and Ages 13+

$29.99

Pros and cons

Pros

Sixteen included figures give the castle scene a substantial character lineup for display or imaginative battles.
Rotating turrets and a buildable inner sanctum offer more scene variation than a static castle model.
The listing describes special-effect pieces and posing options suited to recreating action scenes.

Technical specifications

15 specifications

Identity and age
Brand	Mattel
Model listed	Mattel Brick Shop Masters of the Universe Clash at Snake Mountain
Model number	JMB32
Recommended age	13 years and up
Theme	Fantasy
Subject character	Castle Grayskull

Set and play features
Number of pieces	854
Figures	16 NanoWorld figures
Material	Plastic
Block type	Interlocking Toy Building Block
Operation mode	manual
Indoor or outdoor use	Indoor
Educational objective	Construction Skills

Dimensions and weight
Dimensions listed	2.63 x 16 x 11.5 inches
Weight listed	1.6 pounds

What to know before buying

Listing details to confirm

The listing is inconsistent about product identity and piece count: its title names Battle of Castle Grayskull, its model field says Clash at Snake Mountain, its set-name field names First Ones Gorilla, and piece counts appear as 867, 854 and an explicit component entry of 867 pieces. Verify the selected set and its contents before buying. Dimensions are also given in a separate size field as 16 x 2.6252 x 11.5 inches, so treat the listed measurements as uncertain.

What’s in the box

Included

867 pieces

Who is it for?

A good fit for

Masters of the Universe fans looking to build and display a Castle Grayskull scene.
Builders aged 13 and up who enjoy character-rich fantasy playsets and poseable display scenes.
Collectors wanting a set with a large group of small figures and movable castle features.

Less suited to

Buyers who need a confirmed model identity or exact piece count before ordering.
Anyone seeking a large-scale figure set, since the NanoWorld figures are described as one inch tall.

Mattel Brick Shop Masters of the Universe Castle Grayskull Building Set · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.3 / 5 · 28 ratings

5 stars56%56%
4 stars28%28%
3 stars5%5%
2 stars11%11%
1 star0%0%

Aggregate customer ratings lean positive overall, with a smaller share of lower ratings. With no written feedback supplied, they do not show what buyers liked or disliked. For a set marketed around a detailed build and 16 small figures, the ratings alone cannot confirm build experience, completeness or display quality.

Frequently asked questions

How many pieces are in this set?

The listing gives multiple totals: 867 in its highlights and component entry, and 854 in its number-of-pieces field. Check the selected listing for the correct count.

Which characters are included?

The feature text describes 16 NanoWorld figures, including He-Man and Skeletor, with swappable poses.

Does the castle have movable features?

The listing describes rotating turrets, a buildable inner sanctum, special-effect parts and pieces for posing figures mid-air.

What age is the set intended for?

The listing recommends it for ages 13 and up.