Brickheadz

Optimus Prime Robot & Vehicle

A chunky little Autobot that actually transforms, and that's the whole trick.

Brick Rated Score

3.9/5

Set 40803 · 2025

Pieces237

Minifigsn/a

Year2025

Set number40803

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The verdict

I picked this one up expecting a cute desk toy and got something with an actual party trick built in, you snap Optimus from his big-headed robot pose into a squat little semi truck and back again.

That hinge and slide mechanism is the reason this set exists, and for 237 pieces it earns its keep. It's not going to challenge your building skills the way a Modular does, but it's a genuinely satisfying fifteen minutes with a payoff you can show off on a shelf. Get it if you grew up on the cartoon or the Bay movies and want a shelf piece that does more than just sit there, skip it if you already have a few BrickHeadz and know the format isn't your thing.

Best for: Transformers fans and BrickHeadz collectors who want a display piece with a working gimmick

The full review

What it is

This is LEGO's first real swing at putting the BrickHeadz format through a Transformers filter, and the headline feature is that Optimus Prime doesn't just stand there looking blocky, he transforms. You build the big blue-eyed head, the boxy chest, the stubby limbs, and then you fold the whole thing down into a red and blue semi truck shape. Watching that shift happen the first time is what sells the set. It's a small mechanical trick, but it's exactly the kind of thing that makes a BrickHeadz feel worth the shelf space instead of just another cute head-and-torso figure.

The catch

I'll be honest about where this one falls short too. The BrickHeadz proportions, giant round head, short square body, work great for characters built around personality, but Optimus Prime is a character built around scale and menace, and shrinking him down this way softens a lot of that presence. The truck mode is similarly compromised, it has to fold flat and hinge cleanly, so you get a simplified stand-in for the iconic cab rather than a faithful little truck model. At 237 pieces this isn't a long build, so if you're looking for hours of engagement rather than a fun quick project, temper your expectations.

Who it's for

This one is for Transformers fans who want a playful, kid-friendly version of Optimus Prime that does something clever rather than just posing on a shelf, and for BrickHeadz collectors rounding out a crossover corner of their collection. If you want a display piece that captures the actual heroic scale of the character, or you're chasing pure part count for your dollar, this isn't your set.

What works

The robot-to-truck transformation is simple to operate but satisfying, it's the reason the set feels special instead of generic
Printed and stickered details keep the classic red, blue and silver Optimus color scheme sharp in miniature
A manageable build at 237 pieces, good for an evening rebuild or a first foray into the crossover for a younger builder with help

Worth knowing

The BrickHeadz body proportions mean Optimus reads more cute than heroic, which some longtime Transformers fans find at odds with the character
Vehicle mode is stubby and simplified compared to the truck cab most fans picture, it's a compromise shape to make the transformation work
Limited playability once the novelty of flipping between modes wears off, this is a display piece first

Sold? Grab it.

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The parts story

What the build is actually like, and the pieces worth knowing about.

Building it is quick and friendly, the head and torso go together with the usual BrickHeadz stud-and-bracket logic, and then the last stage is where the fun is, working out how the arms tuck, the legs fold under, and the whole figure hinges forward into a low truck silhouette. It's simple enough that a newer builder can follow it, but the transformation step has a genuine little aha moment when it clicks into place the first time.

The standout here isn't a rare new mold, it's the color and print work doing a lot of heavy lifting to keep Optimus recognizable at this scale, the red chest plate, blue limbs, and silver face details all lean on stickers and printed elements rather than complex geometry. It's a set that earns its personality through paint and shape more than through clever part usage, which is typical of the BrickHeadz line but worth knowing going in if you're hoping for standout new elements.

Fun facts

01This set is part of LEGO's 2025 crossover with Hasbro's Transformers property, bringing the franchise into the BrickHeadz format for the first time
02The build includes a working transformation feature, letting the same model shift between a stylized robot pose and a compact vehicle mode
03BrickHeadz sets like this one are designed as quick, satisfying builds rather than long engineering projects, aimed at both display shelves and younger or newer builders