New Chaos Defiler Review (40k) – A Thousand Sons Perspective

With the upcoming release of the new Chaos Defiler, I wanted to share my thoughts on the new kit, its predecessor, and the Thousand Sons’ relationship to daemon engines.

The funny thing is, you get a little desensitised to the age of some of the Games Workshop kits. Things you swear aren’t that old turn out to be exactly that, and the old Chaos Defiler is a perfect example.

Released in the same year I left school, the original Defiler marked the moment the Chaos range really started to drift away from its Imperial cousins. Up until then, Chaos Space Marine vehicles were essentially Imperial kits with spiky bits. The Defiler changed that. It was one of the first truly distinct Chaos vehicles, giving us a glimpse of what the Traitor Legions had been creating while hidden away in the Eye of Terror.

Aesthetically, it was large and clunky, but it released around the time of the first Dawn of War game, so we all quickly got a feel for how it was meant to move and behave.

Now, don’t get me wrong, my fondness for this kit, and my sadness at seeing it go, is steeped in nostalgia (and maybe a little melancholy). Back then, things were simple. I was going to the local wargaming club every Wednesday night (the imaginatively named Wednesday Club), and I was about to land a job at the local Games Workshop. That kicked off a golden period of miniature painting, takeaway pizzas, and effectively living in the local Wetherspoons (a pub, for those outside the UK).

As a result, I'm sure Warhammer kits from that era hold a special place for those of us pushing 40.

So yes, I was surprised to see a new Defiler kit on the horizon.

I mean, it’s only been… checks calendar… 23 years.

Oh. Fair enough then.

First Impressions of the New Chaos Defiler

As for the new model, it does look good. It certainly fits the Chaos aesthetic, especially being shown alongside the new Obliterators and Mutilators in Iron Warriors colours. Clearly, the Iron Warrior Warpsmiths have been busy.

One thing I really want to applaud Games Workshop for is the inclusion of legion/god-specific head options. For too long, generic Chaos kits have felt a bit lacklustre. I’ve written before about the plain, “paint-it-blue-and-call-it-Thousand-Sons” Rhino problem.

So having actual customisation options baked into the kit, letting you align the Defiler with one of the four Chaos Gods via head swaps, is a definite improvement over the old vehicle upgrade sprue with its simple icons.

Why I’m Sticking with the Classic Defiler

Despite how good the new kit is, I’m sticking with my classic Defilers.

In fact, I just nipped out to the garage to check if my old one is still good enough to paint (again) for my Thousand Sons army.

Good news, it is.

I’ll probably still grab some of the new weapon options and maybe the Thousand Sons head once people start breaking the new kit apart on eBay, but the core model? I’m staying old school.

And the main reason goes beyond nostalgia.

The Shift Toward Fleshy Daemon Engines

The real issue, for me, is Games Workshop’s ongoing shift toward more fleshy daemon engines, and how that clashes with the Thousand Sons.

We saw this already with the Helbrute replacing the Chaos Dreadnought. What was once a mostly mechanical design became a fusion of bulging flesh and warped metal. The same thing has now happened to the Defiler.

Now, I’m not saying this is bad. It absolutely fits the broader Chaos aesthetic, and it’s not even close to being lore-breaking.

But the Thousand Sons are not your average Chaos warband.

Legions like the Iron Warriors? Absolutely, they’d shove some poor unfortunate into a machine, bind a daemon into it, and see what happens. That’s very on-brand.

And yes, individual Thousand Sons sorcerers might do the same. But when they do, it represents something important: that sorcerer has fallen. They’ve abandoned what the Legion stands for.

On a personal note, I really dislike Helbrutes, as they stand in the way of the Thousand Sons getting their Rubric Dreadnoughts and while you can use the Helbrute rules to field a Rubric Dread, I’d rather much see the Thousand Sons get some development and new legion models.

The Thousand Sons and Mutation

To understand why a fleshy Defiler doesn’t quite fit, you have to look at the Thousand Sons’ history with mutation.

Their entire fall to Chaos is rooted in their attempts to stop mutation.

• Their dwindling numbers

• Magnus’s bargain

• Ahriman’s Rubric

All of it ties back to their gene-seed flaw and their desperate attempts to control it.

Yes, you can argue this was all part of Tzeentch’s grand plan, start the fire, then sell the extinguisher, but the key point remains:

The Thousand Sons do not embrace mutation. They fear it. They fight it.

The Cult of Mutation (And Why I Reject It)

This brings me to the Cult of Mutation.

On paper, it represents the mutating aspect of Tzeentch, those who embrace change, warped flesh, and shifting reality.

But there are a couple of examples that immediately come to mind which counter this idea, and instead point to the Legion’s broader attitude toward mutation:

• For Ahirman's Exiles, we have Ahriman, who once killed one of his own brothers for worshipping Tzeentch.

• For the rest of the legion and those loyal to Magnus, Aphael desperately tried to hide his mutations from his brothers during the Battle of the Fang, eventually realising he was too far gone and accepting oblivion.

These alone should tell you something.

A lot of people forget that the Thousand Sons didn’t want this life. Their transformation and exile wasn’t a choice, it was a curse.

So yes, you can argue that elements of the Legion fall into the Cult of Mutation.

I say they’re heretics.

If the Thousand Sons’ entire purpose is to resist mutation, then those who embrace it have either:

• Lost their minds completely (which is entirely possible in the Warp), or

• Decided to inflict their suffering on others

  
  

Either way, in my eyes, it’s a debasement of the Legion.

You can include mutated daemon engines, daemon princes, or heavily warped sorcerers in a Thousand Sons army, but they should feel like a tragic sign of decline, not the norm and nothing to celebrate.

Ahriman, Pragmatism, and Disdain

Of course, the Thousand Sons have a numbers problem. There’s no real narrative way for them to replenish their sorcerers, even if the Rubricae are effectively immortal. Because of that, the Legion is forced to fill its ranks with whatever it can find.

Ahriman himself is a perfect example of this pragmatism. He will use whatever tools are necessary, daemons, cultists, mutants, auxiliaries.

But it’s clear he doesn’t respect these things.

They’re tools. Nothing more.

Interestingly, after reading the Ahriman novels recently, it’s also clear that Ahriman’s exiles aren’t significantly mutated, at least not in any way that’s meaningfully highlighted in the text. That says a lot.

Which leads me to assume that the more debased, heavily mutated sorcerers remain on the Planet of the Sorcerers, separated from Ahriman’s half of the legion.

With Magnus either absent… or turning a blind eye (see what I did there) to what's happening to his sons.

What Games Workshop Seems to Be Doing

Interestingly, I don’t think Games Workshop is that interested in pushing mutation for the Thousand Sons either.

Looking at recent releases… we got robot chickens.

Now, jokes aside, those models clearly lean into the mechanical and arcane construct side of the Legion. Which, are clearly meant to echo their empty shell, robotic undercurrents, something that foreshadows the Rubric in the Pre-Heresy books, and the adoption of automata to bolster their numbers, lead and controlled psychically via a sorcerer.

They fit.

They reinforce the idea of a Legion that replaces flesh with controlled, predictable constructs.

Which is exactly why, even though they were a bit disappointing as our only release last year, they still align better with Thousand Sons identity than fleshy daemon engines do.

Final Thoughts

So, while the new Defiler is undeniably a fantastic kit, and a clear upgrade for many Chaos players, it’s not for me.

At least, not for my Thousand Sons.

I’ll take:

• Dreadnoughts over Helbrutes

• Mechanical Defilers over fleshy ones

• and probably need to buy the Heldrake kit now, before its replaced with a bird.

Not because the new designs are bad, but because they don’t fit the story I want my army to tell.

And that’s really what this comes down to.

A Call to Thousand Sons Players

All of these options are lore-accurate. You can run mutated engines. You can embrace the warp-twisted aesthetic.

But I’m here to make the case for something else:

Return to the original nature of the Legion.

Abandon the fleshy daemon engines.

Embrace the mechanical, the robotic and the cleanliness of white robes over sapphire and gold plate.

Your army, and its aesthetic, will be better for it.