LEGO 77120 Shadow's Mech vs. G.U.N. Trooper: Set Guide

Specifications

Set number	77120
Release year	2026
Piece count	374
Minifigures	1
Theme	Sonic The Hedgehog
Building instructions	Download the instructions on lego.com

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Set 77120, Shadow's Mech vs. G.U.N. Trooper, is part of the Sonic The Hedgehog theme and is listed for 2026. It depicts a confrontation focused on Shadow, with a mech and a G.U.N. Trooper, built from 374 pieces.

Shadow's Mech vs. G.U.N. Trooper places Shadow the Hedgehog at the center of an action scene within the Sonic The Hedgehog theme. The subject connects Shadow with G.U.N., an organization associated with his storylines, giving the set a focus that is separate from a standard Sonic centered scene.

U.N. Trooper, but it does not verify any specific play functions. The build can therefore be described generally as an action model built around a mechanical suit or vehicle and an opposing trooper.

This set is relevant for collectors of the Sonic The Hedgehog theme who want a Shadow focused entry, and for play using recognizable characters and conflict based scenarios. In the wider theme, it stands apart by using Shadow as the main reference point and by pairing him with G.U.N. rather than presenting a broader location from the Sonic universe.

Inventory of set 77120

The inventory of set 77120 lists 374 pieces, spare parts excluded: 135 different lots (one shape in one color) for 106 part shapes.

Colors of set 77120

Main color: black, making up 34% of the parts, followed by red (19%) and dark green (9.1%).

Color	Parts	Share
Black	127	34%
Red	71	19%
Dark Green	34	9.1%
White	30	8%
Dark Bluish Gray	29	7.8%
Pearl Gold	21	5.6%
Light Bluish Gray	14	3.7%
Dark Orange	14	3.7%
Trans-Dark Pink	13	3.5%
Trans-Clear	8	2.1%
Other colors (6)	13	3.5%

Part types

Type	Parts	Share
Plates Special	95	25%
Bricks Sloped	41	11%
Plates	38	10%
Tiles Special	30	8%
Plates Round Curved and Dishes	30	8%
Plates Wedged	16	4.3%

Most common parts in set 77120

Part	Color	Quantity
Bracket 1 x 2 - 1 x 2 Inverted 99780	Red	12
Brick Sloped 33° 2 x 2 Double / Inverted 1762	Black	10
Plate Round 1 x 1 with Solid Stud 6141	Trans-Dark Pink	10
Plate 1 x 2 3023	Red	8
Bracket 1 x 2 - 1 x 2 Inverted 99780	Black	8
Tile Special 2 x 3 Pentagonal 22385	Black	6
Brick Sloped 33° 2 x 2 Double 3300	Dark Green	6
Plate Special 1 x 2 Rounded with 2 Open Studs 35480	Black	6
Technic Pin with Friction Ridges Lengthwise with No Center Slots 61332	Black	6
Technic Brick Special 1 x 2 with Ball Socket Wide 7510	Red	6

96 of the 106 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 77120

3 part shapes in set 77120 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, 7 lots in the set are not found in any other set.

Part	Color
Plate Special 2 x 4 with Ball Joint 8057	White
Hips with Black Legs and White Boots Pattern with Bright Light Orange Shoes, Red Toes, Narrow Gold Knees print 970c03pat27pr0011	Black
Minifig Head Special, Shadow with Warm Tan Face, Open Mouth Smile, White Eyes, Red Streaks in Hair/Spines print 104900pr0004	Warm Tan

No similarly sized set supplies more than a quarter of its parts: set 77120 relies on a little-shared assortment.

Size of set 77120 within its line

With 374 pieces, set 77120 ranks #11 out of 25 Sonic The Hedgehog sets in our database, which have an average of 350 parts. Among the 558 sets released in 2026, it ranks #276.

Included minifigures

Shadow the Hedgehog, Open Mouth SmileQuantity : 1

Frequently asked questions

How many pieces does LEGO set 77120 Shadow's Mech vs. G.U.N. Trooper have?

LEGO set 77120 Shadow's Mech vs. G.U.N. Trooper has 374 pieces. It was released in 2026 as part of the Sonic The Hedgehog theme.

What year was LEGO set 77120 released?

Set 77120 Shadow's Mech vs. G.U.N. Trooper was released in 2026 and belongs to the Sonic The Hedgehog theme.

Which minifigures are included in set 77120?

Number of minifigures in LEGO set 77120 Shadow's Mech vs. G.U.N. Trooper: 1. Their names and quantities are listed in the “Included minifigures” section.

Where can I find the building instructions for set 77120?

The instructions for LEGO set 77120 Shadow's Mech vs. G.U.N. Trooper can be downloaded free as a PDF from the official lego.com website, under “Building Instructions”, by entering the number 77120.

What is the main color of LEGO set 77120?

Black, with 127 out of 374 pieces, or 34%. Next come red (19%) and dark green (9.1%).

How many different parts does set 77120 contain?

Set 77120 has 135 different lots (one shape in one color), covering 106 part shapes. Most common part: Bracket 1 x 2 - 1 x 2 Inverted in red, with 12 copies.

Does LEGO set 77120 contain any exclusive parts?

Yes: 3 part shapes exist in no other set, for example: Plate Special 2 x 4 with Ball Joint.

Which figure is included in set 77120?

The included figure is Shadow the Hedgehog, Open Mouth Smile.

What is the main subject of the model?

The model is centered on Shadow’s mech facing a G.U.N. Trooper within the Sonic The Hedgehog theme.