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LEGO Shadow's Mech vs. G.U.N. Trooper (77120)

Sonic the Hedgehog · 374 pieces · 1 minifigure

From $47.99 at Build & Play · 40% off

Not retiring yet (on sale since 2026)

LEGO Shadow's Mech vs. G.U.N. Trooper (77120)

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Compare prices (Australia)

Regular price $79.99

See it at Build & Play, $47.99

Buy now: That’s the lowest price we’ve recorded here since 8 October 2026.

. Amazon offers can be third-party (marked).

Similar sets with bigger discounts

Price history

Lowest price today: $47.99; at Build & Play
Lowest we’ve recorded: $47.99; Build & Play, 16 Oct 2026
LEGO’s regular price: $79.99; today’s lowest is 40% off
Tracked since: 8 Oct 2026; 1 price change since

Price records (9)

16 October 2026 · Build & Play$47.99
13 October 2026 · Bricks Megastore$79.99
12 October 2026 · Target$75.00
11 October 2026 · Amazon.com.au$65.00
10 October 2026 · Toyworld$79.99
10 October 2026 · Kmart$65.00
10 October 2026 · Target$60.00
10 October 2026 · Big W$65.00
8 October 2026 · LEGO.com Australia$79.99

Prices at LEGO.com Australia, Amazon.com.au, Target, Big W, Kmart, Myer, Toyworld, Build & Play and Bricks Megastore, checked daily. A line breaks when a store was out of stock or not selling the set.

LEGO Shadow's Mech vs. G.U.N. Trooper in other countries

The lowest price today in each country where LEGO sells it, converted at the European Central Bank’s rate. Delivery across borders isn’t included: most stores only ship inside their own country.

CountryLowest priceIn AUDStore

Australia(this page)Best priceBuild & Play$47.99$47.99Build & Play
FranceCdiscountEUR 40.99$65.50Cdiscount
NederlandMister BricksEUR 41.95$67.04Mister Bricks

Show all 13 countries

Exchange rates of 22 October 2026.

Set details

Pieces: 374
Minifigure: 1
Ages: 8+
Released: 2026
Set number: 77120
Theme: Sonic the Hedgehog
Price per piece: 12.8cat today’s lowest price
LEGO.com rating: 4.9
LEGO Insiders points: 360

LEGO Shadow's Mech vs. G.U.N. Trooper building instructions

Instructions bookletPDF, 29 MB

Official instructions from LEGO.com, free to download. The LEGO Builder app has them too, many with 3D steps. All instructions on LEGO.com

LEGO Shadow's Mech vs. G.U.N. Trooper parts list

371 pieces in 132 different parts and colors, plus 1 minifigure.

Minifigures

Shadow the Hedgehog, Open Mouth Smile

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Parts list: Rebrickable.

About the LEGO Shadow's Mech vs. G.U.N. Trooper

Protect the Chaos Emerald or hunt for more with Shadow’s Mech vs. G.U.N. Trooper (77120), an action-packed building toy for boys and girls ages 8 and up. Kids can create fierce battles between Shadow the Hedgehog and the G.U.N. Trooper with the mech and Dark Rider motorcycle. Control the mech action figure’s articulated limbs, 2 swords and 4 shoulder-mounted stud shooters. Kids can help Shadow hop on the motorcycle or attach the Doom Wings to the mech or Shadow for more imaginative role play possibilities. This pretend-play toy makes a cool gamer gift for boys, girls and video game merch collectors. Expand the play and display possibilities with other LEGO® Sonic the Hedgehog™ toys, sold separately. This set offers a rewarding building experience, and kids can assemble with confidence using the LEGO Builder app, zooming and rotating with 3D instructions while saving and tracking progress. This set contains 374 pieces.

SONIC THE HEDGEHOG™ BUILDING TOY – Kids and gamers ages 8 years old and up can charge into battle with a Shadow the Hedgehog figure and his mech, designed to spark exciting adventures
PRETEND PLAY FEATURES – This Shadow’s Mech vs. G.U.N. Trooper (77120) set has everything kids need for hours of action play with a mech, Dark Rider motorcycle, a pair of Doom Wings and more
BATTLE FUNCTIONS – Suit up for battle action with the posable mech figure and its articulated limbs, 4 shoulder stud shooters and opening bull bars on the front to deploy the Dark Rider
FIGURES AND ACCESSORIES – Shadow the Hedgehog minifigure, a G.U.N. Trooper figure, 2 swords for the mech and 2 collectible Chaos Emeralds spark thrilling role play fun
SONIC GIFT IDEA FOR KIDS – Treat a gamer with this birthday or holiday gift idea for boys, girls and any fans of the Sonic universe
VIDEO GAME COLLECTIBLES – Add this creative piece of gaming merch to a kid’s collection and display it alongside other LEGO® Sonic the Hedgehog™ sets, sold separately
A HELPING HAND – Discover digital instructions in the LEGO® Builder app, where kids can save sets, track progress and zoom in and rotate models using 3D instructions as they develop new skills
DIMENSIONS – This 374-piece building set includes a mech that stands over 7.5 in. (20 cm) high, 6.5 in. (16 cm) wide and 5.5 in. (14 cm) deep

Description: LEGO.com.

LEGO Shadow's Mech vs. G.U.N. Trooper: FAQ

Is the LEGO Shadow's Mech vs. G.U.N. Trooper retiring?

Not yet: the LEGO Shadow's Mech vs. G.U.N. Trooper isn’t flagged as retiring. LEGO.com Australia doesn’t list it as “Retiring soon”. We check every day and will update this page the day that changes.

How much is the LEGO Shadow's Mech vs. G.U.N. Trooper?

The lowest price we found today is $47.99 at Build & Play, out of 8 stores selling it today (regular price $79.99). Prices change often: this page is updated every day.

Should I buy the LEGO Shadow's Mech vs. G.U.N. Trooper now or wait?

40% off at Build & Play. The best price today is $47.99 at Build & Play, 40% below LEGO’s regular price. That’s the lowest price we’ve recorded here since 8 October 2026.