Legions Imperialis – Mechanicum Acastus Knights Asterius
Among the three Mechanicum knights new in plastic, the Acastus Knights Asterius are the only ones we didn't cover before as their resin counter part and as such are very happy to introduce them on here.
And just like the other items, this boxed set will go on pre-order on April 19th and will be released on May 3rd for a RRP of 37 GBP or 47,50 EUR.
The Acastus-Class Knights Porphyrion are already a rare sight, being perhaps the most heavily armed and armoured of all the Knight chassis in service, which rivals the Scout Class Warhounds Titans in size and might. The Asterius is even more scarce, replacing the Twin Magna Lascannons of the regular Acastus for Conversion Beam Cannons that can turn enemy fortresses and titans into ashes. The other weapon systems are replaced as well, the Las- or Autocannons are up armoured to Volkite Culverins and even the missile system is replaced by a Karacnos mortar battery.
Legions Imperialis – Mechanicum Krios Squadron
Just in march of this year we had the "big brother" of this vehicle for Horus Heresy and just two months later we see the Krios as a Squadron kit of six for Legions Imperialis.
The Krios was the main battle tank of the Mechanicum, similar to role of the Predator for the Legiones Astartes, during the Horus Heresy. There were multiple variants of the Krios produced and this kit covers the two Krios Battle Tanks with Lightning Cannon or Irad Scourers, as well as the Krios Venator variant with Pulsar-Fusil.
This kit will go on pre-order on April 19th and will be released on May 3rd for a RRP of 31,50 GBP or 41 EUR.
Legions Imperialis – Mechanicum Cerastus Knights Atrapos
We get to see three former Forge World resin kits from the Adeptus Titanicus range re-released as plastic kits today, and in this review we will cover the Cerastus Knights Atrapos.
This set of four Cerastus Knights Atrapos will go on pre-order on April 19th and will be released on May 3rd for a RRP of 47,50 GBP/62,50 EUR. Their rules are covered in the Core Rulebook for Legions Imperialis.
The Atrapos pattern of the Cerastus Knights is a rather "recent" addition to the lore of Warhammer 40,000, with them being introduced as 28mm model kit in 2015. Similar to the Mechanicum Questoris knights, the Cerastus Knight Atrapos is a unique and rare variant among the Knight Households. They were originally developed to take on heretek engines and xenos warmachines, as those were considered a blasphemy to the Omnissiah, but their rare and potent weaponry made them a devastating threat against not only Knights but Titans well, on both sides of the Horus Heresy. Armed with Atrapos Lascutters and Graviton Singularity Cannons, mounted on the swift Cerastus chassis the Atrapos is a rather destructive choice, especially further upgraded with the Macro-Extinction Protocols, Blessed Autosimulacra and Ionic Flare Shield, which were partially transfered into their unit profile in Legions Imperialis.
Legions Imperialis – Mechanicum Knights Magaera/Styrix
The Questoris Knights got multiple updates over the time since their initial release for Adeptus Titanicus in 2018. The initial box set was a set of 3 Imperial Knights, and those got an upgrade with the rocket pods and thunderstrike gauntlets (either as a blister pack or full set) to Questoris Knights, and parallel a release by Forge World for the Mechanicum Knight variants of the Magaera and Styrix in resin. And now these resin models have been remade in plastic, which we are going to take a closer look upon today!
This set of four Questoris Knights will go on pre-order on April 19th and will be released on May 3rd for a RRP of 31,50 GBP/41 EUR.
The Questoris Knights Styrix and Mageara were introduced to the Lore of Warhammer (30,000) with the Horus Heresy Book IV - Conquest in 2014. Both patterns have a Hekaton Siege Claw as a melee weapon, but in different designs, and for ranged attacks either a Lightning Cannon in case of the Magaera or Volkite Chieorovile in case of the Styrix.
Legions Imperialis – Mechanicum Karacnos Assault Tank Squadron
In addition to the armoured transport of the Triaros, the Mechanicum now has access to the Karacnos Assault Tank in Legions Imperialis as well.
Using the chassis of the Triaros Armoured Conveyor, the Karacnos is an uparmoured variant to be used in assault operations. The transportation compartment have been replaced by the Karacnos Mortar Battery system. These batteries fire radioactive warheads into the enemy, but that is not covered beside regular rules for mortars in their unit entry in Rise of the Dark Mechanicum supplement.
The Karacnos Assault Tank Squadron of four vehicles will go on pre-order on April 19th and will be released on May 3rd for a RRP of 31,50 GBP or 41 EUR.
Horus Heresy – Mechanicum Ursarax Cohort
Among the new sets for the Mechanicum are the Usarax Cohorts, a unit closely related to the already available Thallax Cohorts.
Both, the Thallax and Ursarax are no robots, but heavily augmented cyborgs. Where the Tech-thralls or Servitors are mind-wiped, these keep a part of their human independent initiative and personality, but are stripped to the bare minimum of their major organs and nervous system and then encased within an armoured mechanical system.
The Ursarax are a rarer sight on the battle field, compared to the more common Thallax, as they fulfill a different role in combat. Where the Thallax have their different types of ranged weapons, the Ursarax are focused on close combat and assault attacks. They are equipped with jump packs and lightning claws, which can be replaced with power fists, and are even armed with short ranged Volkite Incinerator in the middle of their chests.
Horus Heresy – Mechanicum Krios Battle Tank / Venator
An entirely new kit from the Mechanicum Heavy Support Force is the Krios Battle Tank including the Venator variant.
This vehicle was moved from a former Forge World resin kit into a multi-part plastic kit, covering both variants and three different weapon load outs. You can build from this set the regular Krios Battle Tank (either with Lightning Cannon or Irradiation Blaster) or Krios Venator with a Pulsar Fusil. We do not have a official RRP yet, as the kit is currently only available as part of the Mechanicum Heavy Support Force, but pricing is very likely between 55 to 62,50 EUR.
Horus Heresy – Mechanicum Heavy Support Force
Early in february we saw the teaser for the next Horus Heresy boxed set - the Mechanicum Heavy Support Force! A bit as a surprise, because we mostly saw regular battle groups so far with Legiones Astartes or Solar Auxilia, now the Mechanicum even gets some tactical reinforcement.
Interesting combination regarding the content, as we get variants of existing kits with the Karacnos and Thanatar, and an entire new plastic kit with the Krios Battle Tank / Venator, for a price of 110 GBP/ 145 EUR.
Legions Imperialis – Dark Mechanicum Serperos Overlord Heavy Stalkers
The second set from the Dark Mechanicum for Legions Imperialis are the Serperos 'Overlord' Heavy Stalkers and they complement the lighter Stalker Construct to flesh out the Mechanicum lists for the traitor forces.
This set goes for pre-order today on December 7th and will be released on December 21st 2025, at a RRP of 41 EUR.
The constructs are new designs to the Horus Heresy, and haven't been seen before neither in 28-32 nor epic scale. As Games Workshop uses the larger models for the product pictures on Titanicus, Aeronautica and Imperialis, we actually get a preview on the upcoming models right there on the boxes. With this kit we get four models of the new Serperos Heavy Stalker design.
Legions Imperialis – Dark Mechanicum Stalker Constructs
In addition to the Mechanicum release for Legions Imperialis, Games Workshop added the first sets for the Dark Mechanicum, the Stalker Constructs and Serperos Overlord Heavy Stalkers - both of which we're going to cover today, but starting with the Stalker Constructs here.
This set goes for pre-order today on December 7th and will be released on December 21st 2025, at a RRP of 41 EUR.
These are entirely new designs added to the game. We had obviously Dark Mechanicum in the lore in the past, as a playable faction as well, but never written out in detail. And to give the "full scale" Horus Heresy folks a heads up. Games Workshop uses the 28-32mm models for the box art with all the epic scale products (they did so with Adeptus Titanicus and Aeronautica Imperialis) and what we see on the packaging is most certainly the upcoming model for the Horus Heresy.
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