Solar Auxilia reinforcements go plastic, new Rapier batteries and Charonite Ogryns revealed

The new Solar Auxilia wave looks deadly on the table, but it also asks a very practical question: how much hobby momentum do you want to spend getting there? The latest reinforcements push three very different kits into plastic, the Spartan Prometheus, the Rapier platform weapons, and the Charonite Ogryns, all aimed at making one of the Horus Heresy’s most characterful non-Astartes armies easier to expand. That matters because the visual result is obvious, but the time cost sits in the assembly and conversion work, especially if you want these units to feel fully integrated into a Solar Auxilia force rather than just dropped in as fresh kits.

A rules-linked release, not just a sculpt drop

This isn’t a loose reveal with no support behind it. Games Workshop says updated rules for the new Rapiers and Charonite Ogryns will appear in the upcoming supplement *Journal Tactica: The Battle of Tallarn - Part 1*, which gives the kits immediate army relevance rather than leaving them as shelf candy. Warhammer Community tied the release to its AdeptiCon 2026 preview, framing it as a push of reinforcements into plastic for both Legiones Astartes and Solar Auxilia armies in the Horus Heresy.

For painters and army builders, that rules connection changes the decision-making. A model can be a display piece, a narrative centerpiece, or a battlefield tool, but when it comes with fresh support in a campaign supplement, it becomes much easier to justify building it now instead of parking it for later.

The Rapier batteries are the kind of kit that reward patience

The new Rapier offerings split the workload into two distinct battlefield roles: the Rapier Fire Support Battery and the Rapier Direct Fire Battery. The Fire Support Battery comes with quad launchers and mole mortars, while the Direct Fire Battery gives you gravis heavy bolters, gravis multi-lasers, or a laser destroyer. That spread is great for list variety, but it also means the kit rewards careful planning before glue meets plastic.

From a hobby perspective, these are the kinds of units where the mechanical framing does a lot of the visual heavy lifting. Once the base coats, hazard strips, and metallics are in place, the platforms can look spectacular without needing elaborate freehand or excessive weathering. The bottleneck is usually assembly discipline: aligning weapon mounts cleanly, deciding how much battlefield grime you want to sell the siege-engine look, and resisting the temptation to overcomplicate every gun platform with extra detail that will be hard to see once the army is on the table.

If you want momentum, the Rapiers are the safest part of the wave to batch out. They fit cleanly into a mechanized Solar Auxilia force, and the weapon options give you enough variety to keep a whole battery from feeling repetitive.

Charonite Ogryns are the headline kit for hobbyists who want menace

Warhammer Community describes the Charonite Ogryns as biochemically altered warriors in armoured void suits, pumped full of combat stimulants. They are also one of the most distinctive parts of the release, because they sit at the intersection of brute force and grim industrial design. The silhouettes do a lot of the work here: heavy bodies, sealed armour, and a weapons loadout built around claws, blades, shredders, and crushers.

That makes them a natural focal point for painters who enjoy making a unit feel lived-in and dangerous. You can lean hard into contrast here, with dark void-suit panels, bright surgical or chemical accent colors, and battered metallics on the weaponry. Unlike the Rapiers, though, these are also the part of the release most likely to eat hobby time if you chase every seam, cable, and texture in the armor.

That is the trade-off in plain terms. The Ogryns probably deliver the biggest visual payoff per finished model, but they also risk becoming the slowest part of the project if you want each one to read as a heavily altered veteran instead of just another brute with a wash and drybrush.

The Spartan Prometheus broadens the force beyond the infantry and guns

The Spartan Prometheus rounds out the preview and signals that this wave is not only about support elements. For Solar Auxilia collectors, a Spartan variant adds more of the armored transport and siege aesthetic that helps the army look like a true expeditionary war machine rather than a handful of isolated squads. It also fits neatly alongside the Rapiers and Ogryns, creating a force mix built around heavy hardware, specialist infantry, and mobile fire support.

That matters if you are planning a coherent project instead of buying single kits opportunistically. A Spartan, a pair of Rapier batteries, and a block of Charonite Ogryns can all push the same visual language: disciplined, mechanical, and brutally functional. The result is an army that looks more unified on the table, even before you start pushing weathering, markings, or campaign insignia.

This release sits inside a larger Solar Auxilia expansion

The new kits also make more sense when you look at what Solar Auxilia has already been getting. Warhammer Community previously showed a Solar Auxilia Battle Group that included 12 Rapier batteries, four Cyclops remote bombs, 12 Tarantula sentry guns, and four Charonite Ogryn bases. That tells you this is not a one-off splash release but part of a steady broadening of the faction’s heavy-support range.

For anyone building Solar Auxilia as a long-term project, that continuity is important. It suggests Games Workshop is supporting the faction in both mass-battle and large-scale Horus Heresy formats, with a clear preference for mechanized firepower and brutal close-combat auxiliaries. In practical terms, that means the new kits are easier to slot into existing collections because the wider range already supports the same battlefield identity.

Timing matters for painters, converters, and army planners

Tale of Painters notes that the reinforcements were set for pre-order on May 2, 2026, with general release on May 16, 2026. That short gap matters because it gives you a narrow window to decide whether these kits belong in a display project, a narrative Solar Auxilia force, or a rules-first army built around efficient battlefield tools. If you like to plan your backlog carefully, this is one of those releases where the smartest move is deciding the role of each kit before the sprues arrive.

The core hobby lesson is simple. The Rapier batteries offer a clean path to efficient, high-impact support units, while the Charonite Ogryns demand more commitment but pay off with far more character. Add in the Spartan Prometheus and the ongoing Solar Auxilia expansion, and you have a release wave that looks strong on the table, but only truly shines if you are ready for the build before the brushwork ever begins.