Review: 75434 K-2SO
Posted by CapnRex101,
I was delighted with 75398 C-3PO last year and that model immediately raised my expectations for future large-scale figures, showing that even humanoid droids can look outstanding in LEGO form. The mighty 75434 K-2SO is perhaps even more remarkable!
The droid's slender legs seem very problematic for a LEGO model, though this figure is actually totally stable and can even stand without its base. Furthermore, the complex shaping seems impressive and the upper body is fully articulated, so Kaytoo has the potential to be the best large-scale droid released to date and at a reasonable price.
Summary
75434 K-2SO, 845 pieces.
£79.99 / $89.99 / €89.99 | 9.5p / 10.6c / 10.6c per piece.
Buy at LEGO.com »
K-2SO is realised exceptionally well at this scale, with lots of personality
- Perfect proportions
- Stable and great articulation
- Creative building techniques
- Good value
- Would benefit from an accessory
The set was provided for review by LEGO. All opinions expressed are those of the author.
Minifigure
Large-scale characters are normally accompanied by a minifigure and K-2SO is too. The same figure appeared in 75399 U-wing Fighter earlier in 2025, re-using the combined head and body mould developed for 75156 Krennic's Imperial Shuttle, albeit with updated decoration. Given its tiny size, I am pleased with the level of detail.
That even extends to Imperial symbols printed on each of the bars forming K-2SO's shoulders, where standard Battle Droid arms are attached. This droid lacks any accessories, although KX-series droids can cause plenty of damage without weapons.
The Completed Model
As normal, there is space for the figure to stand beside the supplied information plaque, which matches the size and style of those accompanying other large-scale characters. All this data is correct and I appreciate the consistency between plaques, so they look great together.
KX security droids are well over two metres in height onscreen and 75434 K-2SO captures the droids' lanky proportions perfectly. The slender legs and relatively small body are excellent and black was a fitting colour choice for K-2SO, with occasional dark bluish grey accents and yellow stripes around the shoulders.
I happen to own the Hot Toys KX Enforcer Droid, which serves as a good point of comparison for the LEGO version. As you can see, the proportions of the model are extremely close to the source material, while the shaping of the torso, hips and legs is excellent as well. The arms are the only conspicuous area of difference, as their taper towards the wrists should be subtler.
K-2SO can be detached from the base and stands comfortably without it, as shown above. The figure measures 39cm in height in that form, or 41cm with its base attached. Either way, K-2SO is not in scale with 75379 R2-D2 or 75398 C-3PO because the KX droid should be substantially taller, though the trio still look reasonable together on display, in my opinion.
Articulation is understandably restricted to the droid's upper body, which makes dynamic poses difficult. Nevertheless, the waist, shoulders, elbows, wrists and neck all incorporate joints with a great range of motion, giving the figure some personality. An accessory would have been helpful though, as I think Kaytoo looks best with something to focus on or interact with, such as his SE-14C pistol from Rogue One.
The head tends to be a challenging feature to recreate on any large-scale character, but I think K-2SO fares rather well. The 2x2x2 curved corner slopes created for 75398 C-3PO are used to good effect on top and 1x1 round plates with bars add mechanical details underneath. Even the eyes are successful, particularly since the vertical slots in these white Technic pins correspond with the onscreen droid.
In addition, I love the rubber tyre forming the neck housing. Unusually, this piece is only held in place between two 1x1 accessory holders and a curved slope. I am surprised such a technique is considered legal for an official set, although it feels secure enough and does not interfere with the neck articulation whatsoever.
The construction of the body is pretty complex, with a variety of plates, tiles and curved slopes connected in several directions. The result looks wonderful though, recreating the shape of the character in Andor and Rogue One, with stickers to add any final touches. I much prefer printed pieces on display-oriented statues, but none of these stickers are egregious.
While it is not designed for easy access, there is an interesting Easter egg inside, as a printed 2x2 tile from 10355 Blacktron Renegade is installed. This is not necessary, but it makes use of the space and is a lovely bonus, presumably keeping the tile in production for longer.
Pearl dark grey would probably be a better colour for the shoulders than light and dark bluish grey, although these colours are effective too. Moreover, the yellow accents are accurate and again use rubber tyres, though these are attached to the usual Technic wheels, unlike the tyre around the neck.
Stickers are applied on each shoulder and the shape of the armour continues to impress, with curved slopes on top of the shoulders and textured wheels further down. As mentioned earlier, however, the forearms should only narrow gently towards the wrists, so I dislike how suddenly their width changes. Also, the Technic holes in the upper arms look a bit awkward.
KX droids and Imperial Stormtroopers feature the same pattern on their back, represented here by a 2x2 turntable base and two string loops, with a couple of levers above. The intricate details further down require a sticker, which brings the total included to six.
The structure of the hips is another distinctive feature of the KX-series and another this model gets absolutely right. Similarly, 2x4 curved wedge slopes and 1x6 slopes combine perfectly on the thighs, while Technic discs create the impression of moveable knees, even though they are actually fixed.
The base is probably my least favourite part of this statue. It looks fine and does include some texture, but there was potential for more. Additionally, I think the feet might look better if turned inwards a bit further, although this angle means you can connect each foot to the base with two Technic pins, so it feels very secure.
Overall
K-2SO is one of my favourite droids in Star Wars, but I doubted whether he would suit a large-scale design because KX units have extremely slender limbs, with potential for stability issues. 75434 K-2SO puts those concerns to rest, however, as potentially the best Star Wars character statue to date! Its only rival for me is the oft-forgotten 75306 Imperial Probe Droid.
Perhaps some of the stickered pieces could have been printed, though considering the price of £79.99, $89.99 or €89.99, I cannot begrudge a few stickers. Not everybody enjoys sets like this, but for those who do, 75434 K-2SO is close to faultless.
100 likes
31 comments on this article
The head is awful
That picture with the brick separator is brilliant :-)
"Would benefit from an accessory"
...a hand grenade/thermal detonator?
@LEGOFanInPJ said:
""Would benefit from an accessory"
...a hand grenade/thermal detonator?"
[throws hands in the air]
“A thermal detonator!!”
You’re letting her keep it?! Would you like to know the probability of her using it against you? It’s high. It’s very high.
While I hope folks will eventually come up with some solutions on how to mod more leg mobility, I really love this set.
That being said, I also think it’s a massive fail to not have all these buildable figures in scale with each other. Having to display them separately due to their disparate sizing is beyond frustrating. I’ve simply given up any interest in getting the Battle Droid and won’t go chasing down all the others short of a good discount.
I have mixed feelings on this one. The body and stature looks great but not sure about the face, even after all this time of it being released. Bit starnge Lego sends this now to you for review. Maybe they are trying to boost sales of the set. They should drop 4x points on it if its not selling well, like theyve done witht he willy wonka set
@MZ_1 said:
"The head is awful"
“I find that answer vague and unconvincing.”
Love the set. K-2SO is also one of my favorite droids in Star Wars.
I was never a huge fan of the build for the head, but looking at it in this review I will admit that it does look better than I originally thought, especially when viewed from different angles.
While I do like this set, I already have 75120, which I actually like more, so I'm cool sticking with that. BTW, love the picture with the brick separator, lol. Great review, Capn!
@yellowcastle said:
[[You’re letting her keep it?! Would you like to know the probability of her using it against you? It’s high. It’s very high.]
There's a problem on the horizon. (looks at wallet)
Could have him holding the ISB Agent from the U-Wing!
K2SO4!
I have C3-P0, R2, Chopper and this one displayed together, and I have to say that people coming home quite appreciate to see them 4, with many details, and non lego aficionados are amazed by how Lego has changed until this day, with much more curves and details now possible. I have no issue whatsoever with the scale : the 4 droids goes on together very well , but for hard SW lore fans who maybe could blame me to gather them all while I don't think there's any moment when they're really gathering in any SW episode. But on my shelf they are, and really look very good.
I can't get over how much it looks like he has a bowl cut.
His accessory was a bag but he decided not to carry it.
@KyloBen1012 said:
"I have mixed feelings on this one. The body and stature looks great but not sure about the face, even after all this time of it being released. Bit starnge Lego sends this now to you for review. Maybe they are trying to boost sales of the set. They should drop 4x points on it if its not selling well, like theyve done witht he willy wonka set"
We were sent this set with the rest of the summer range, I just did not have a chance to review it at the time of release.
@ALegoFan said:
"K2SO4!"
Potassium Sulfate
Like this one a lot. I will try to get it eventually - unfortunately I have not seen it on sale anywhere: unless there is double points or GWPs or some sort of deals I try not to buy Lego sets at full price.
I also like the C3P0 but I have yet to convince myself that it is worth what they ask for it - even on sale.
I wouldn't say Kaytoo is my absolute favorite droid, (I gotta be true to Artoo), but he's definitely up there, so I'll admit to being extremely tempted. At the very least, I may see what that updated minifig goes for on Bricklink.
@Elcascador said:
"That picture with the brick separator is brilliant :-)"
Best picture in the review. Maybe the best picture in *any* review in at least this month.
Loving that photo with the brick-seperater - should be a poster :o)
@beatnik said:
"Loving that photo with the brick-seperater - should be a poster :o)"
That as well as the pic of the Kamino training vehicle ‘balancing’ by itself from CapnRex’s review of the GWP Kamino training facility
Awful. Unnecessary. Not iconic at all. Dispensable. Next one, please.
@Elcascador said:
"That picture with the brick separator is brilliant :-)"
Glad you can see it...
Great review, and indeed love that picture with the brick separator!
Have already bought this set a while ago, and considering I paid only €45 for it there's no way it's gonna disappoint me. Such a cool droid!
You are being reviewed!
Try not to resist.
Sticking single studs inside of Technic-holes is not considered an illegal technique. It's rarely used, because the connection's significantly tighter - but it does see use. Adding 1x1 tiles to your Technic-bricks for instance, that's fine, you do you.
Anything over 1x1 though, is considered illegal. You can, with some difficulty, safely remove those 1x1s, but removing a single 1x2 from two adjacent Technic-holes for instance is a pretty tough task for tiny hands.
The accessory-holders inside of that Technic-wheel, they're fine. Don't lose any sleep over it.
@FARLANDER said:
"Awful. Unnecessary. Not iconic at all. Dispensable. Next one, please."
You could literally say that about most buildable characters. Wicket is also useless (in my opinion because they could have used that set slot for a UT-AT instead) and so is the 2025 Grogu. Chopper and the Droideka aren’t super iconic either.
@CommanderR3x said:
" @FARLANDER said:
"Awful. Unnecessary. Not iconic at all. Dispensable. Next one, please."
You could literally say that about most buildable characters. Wicket is also useless (in my opinion because they could have used that set slot for a UT-AT instead) and so is the 2025 Grogu. Chopper and the Droideka aren’t super iconic either. "
How iconic a character is depends on what parts of Star Wars they're into. Wicket is definitely iconic if RotJ is your favorite movie, Chopper is iconic if you're a Rebels fan, etc.
Not a fan of the 3 finger hands, at least 75120 appeared to have 4 fingers. A shame they couldn't use the same hands from 75398 (and now 76344).
I will forever hold a grudge against this droid because it getting shot is the second to last moment in Rogue One that I didn't call before it happened. The last moment was the shuttle getting blown up, because I forgot the shuttle pilot existed. Everything else from this moment on was utterly predicatable.
While this looks great, I didn't get into latest line of Star Wars figure builds. I'm happy with 75120 that I have.
@CommanderR3x 75430 Wicket is useless because he's high-octane nightmare fuel. Those way too large thousand-yard eyes. The way it looks like he has two mouths, one above the other. The hood and cheeks looking like planks, like he's a crude wooden sculpture to be burnt in some unholy ritual. As we saw from the "Creepiest set" thread, we really need an annual Kill It With Fire And Nuke It From Orbit award.
Speaking of which, the front page picture *does* make K-2SO look like a bizarre crossbreed of a black cat and the Belville Baby.
Can we get a side by side of K-2SO and Iron Man?