Shadow Mech vs. GUN Trooper (LEGO 77120)
Author: lego_official
LEGO official set 77120 Shadow Mech vs. GUN Trooper building instructions. Series: LEGO® Sonic the Hedgehog™. Pieces: 374. Release year: 2026. Suitable age: 8+. 1 instruction manual in total.

- Brand
- LEGO
- Set number
- 77120
- Series
- LEGO® Sonic the Hedgehog™
- Category
- Scenery
- Pieces
- 374
- Difficulty
- 3 / 5
- Released
- 2026
- Instruction pages
- 97 pages
About this set
LEGO 77120 sits in the LEGO Sonic the Hedgehog line, a 374-piece scene set rated 3/5 for difficulty that pits Shadow's mech against a GUN Trooper. The color story runs across black, red, green, white, yellow, orange and gray: black carries the mech body, red marks the spiky head decoration and shoulder armor edges, green goes to the small robot, yellow shows up on the dual yellow longswords, and orange and gray separate the turret and ground details. Three things stand out on the build. The spiked shoulder armor flares outward and frames the black torso, while the red spiky head piece gives the silhouette a sharp contrast. The dual yellow longswords push the pose toward an attack stance. On the other side, the gray turret and green small robot give the standoff something to anchor against. For build order, start with the green robot and turret; both use few parts and go together quickly, so they work as a warm-up. Then move to the mech torso and shoulder armor. The spikes are mirrored left and right, so working bag by bag keeps the parts straight. Attach the longswords last so you are not knocking them off mid-build. The 3/5 rating means some symmetry and angle work, but nothing that stalls you. It suits Sonic collectors, fans of mech and villain-faction subjects, and anyone after a mid-size scene set for a practice build.
- Category: Scenery
- Difficulty: 3 / 5
- Parts: 374
- Brand: LEGO
- Set number: 77120
- Views: 5
- Likes: 0
Instruction pages









