Tremortusk

by SerialBuilder

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Run #02

The Tremortusk is SerialBuilder’s take on the heavily armoured war machine from Horizon Forbidden West. This is his largest build in terms of part count, and showcases an imposing silhouette packed with accurate mechanical detailing, from its reinforced plating to its devastating weapon systems. The build includes an integrated diorama base, articulating shock canons and an adjustable head.

Time27-40 hours
InstructionsHigh-quality downloadable PDF
Build difficultyBased on 10 reviews
BeginnerIntermediateExpert

Customers rate this build as Expert Builder

Imposing Stance
1

Imposing Stance

The Tremortusk is built on a detailed diorama base and features stance that is both accurate and imposing. This war machine is ready for battle.

2

Detailed Armor and Weapons

Every panel and attachment is carefully designed to match the distinctive features of the Tremortusk. The beast comes loaded, ready for war.

3

Articulating Functionality

The Tremortusk is SerialBuilder's first Horizon beast that features adjustable shock cannons depending on whether you want it in a passive mode or in attack mode. The adjustment is done using an included built wrench.

Specifications

Pieces7,982
Dimensions
L50×W30×H39cm
Scale1:20
materialHigh Quality ABS
compatibilityLEGO System Compatible
Build time27-40 hours

Our thoughts on the design

The Tremortusk is SerialBuilder's most recent design of all the beasts in the Creator Set and it really shows how far he has come as a LEGO designer. Featuring a few firsts in his builds, the Tremortusk comes with a diorama base and articulating Shock Cannons which were a was surprise. The techniques used are more advanced, the sturdiness of the appendages and panels is top-notch and as always, the stance is very accurate, along with all the details of the build. You may need an extra pair of hands to help you with attaching the beast to the base, but it's worth it.

What's in the box?

Premium Quality Bricks

"Comparable to LEGO"

*based on the average quality rating from verified builders

Numbered Bags

20bags

“Get Started” Card

QR code with a link to access your high quality downloadable PDF instructions

Fixes we've made

Improved the stability of the build

The original design, whilst featuring a solid overall build structure, had a critical weak-point at the feet. This meant that moving the build around could result in one or a few of the feet unseating from the base, causing the heavy beast to come crashing down. Great in-game, not so much IRL. We fixed this by securing the feet further into the base.

Severity: Critical

Customers' Builds

Real photos from builders who completed the Tremortusk

Tremortusk Reviews

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Showing 4 of 10 reviews

T
TPH Verified
2 Aug 2026
Level: Expert BuilderBrick Quality: Prefer it to LEGO

Very very amazing

This MOC is truly exceptional. The trunk is really movable. I’ve built this MOC before using official Lego pieces, following SerialBuilder’s original plan. That version turned out to be quite unstable, and the parts attached to the back (cylinders, rods) were extremely wobbly. In that regard, your MOC is better. However, I’d like to point out that, in your MOC, the 88-mm antennae (unlike the 120-mm ones) are too small in diameter to fit into the holes in the “binoculars.” That’s a bit frustrating. I’m currently looking for a solution to this problem. There is also the problem with the black small pieces not usable with the red cylinders ("eyes")

Most Surprising Thing

The different modules are rendered with multiples angles, which gives them a very realistic look.

What Can We Do Better?

Replace the parts mentioned above.

f
fabien landrivon Verified
31 Jul 2026
Level: Expert BuilderBrick Quality: Comparable to LEGO

Model for experimented builder but awsome!!!

Another fantastic set! I enjoyed every step of the build. The parts are of great quality, the finished model is solid, and the overall design looks fantastic. It was a wonderful building experience and definitely makes me want to discover more models from this brand.

M
Mr Anthony Drummond Verified
10 Jul 2026
Level: IntermediateBrick Quality: Comparable to LEGO

Beast

I found this a great build it just keeps going. the detail, beautiful. As the model it a bit head heavy I found that on moving it to display the back legs pop off, not a major issue

Most Surprising Thing

The amount of small detail

V
Vincent B. Verified
3 Jul 2026
Level: Expert BuilderBrick Quality: Comparable to LEGO

Tremendous Detail and funtusktic

Since you recently mentioned you love puns, I had to give a nod to that in the title. These 4 sets so far (still got the largest one left) have been amazing! So much fun, hours of building. I even noticed yesterday I had completely forgotten to watch the latest two episodes of Rick and Morty, cos I was busy building EVERY evening. The tremortusk build feels solid and super accurate!

Most Surprising Thing

The amount of detail and the fully functioning Servo Cannon Mechanism.

What Can We Do Better?

I have only two things to "complain": - For all the parts that need to join the main body (after the legs are connected with the base, it was very dif...

Tremortusk

Tremortusk

by SerialBuilder

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