Kit Review

Straight build + Stickers

Size comparison with a cigarette pack

Various angles

Detail shots

The weapons included are the Alterable Bayonetta and a beam saber.

The Alterable Bayonetta's handle is articulated, and you can attach two different sizes of beam parts.

The beam saber is stored inside the shoulder.

HG Gundam Naion - Handle articulation and deployment gimmick of the large beam cannon "Vajra" mounted on the ba

Handle articulation and deployment gimmick of the large beam cannon "Vajra" mounted on the backpack

HG Gundam Naion - Each Vajra has three gun-bits "Rinkou" attached, which can rotate and detach.

Each Vajra has three gun-bits "Rinkou" attached,
and they can rotate and detach.

You can also choose stickers for the normal (non-lit) state.

A total of three hands are included.

Only one leftover part.

Limb articulation

The forward/backward range of motion on the shoulders is limited.

You can pull the hip joint outward to get a little extra range of motion.

Deploying the Vajra.

HG Gundam Naion - After deploying it, you need to hold it by hand, but the limited space makes it tricky to get a good po

After deploying it, you need to hold it by hand, but the limited space makes it tricky to get a good pose.

HG Gundam Naion - The biggest issue is that the sub-arm connecting the Vajra uses a C-type joint — it tends to pop off du

The biggest issue is that the sub-arm connecting the Vajra uses a C-type joint...
It tends to pop off during posing, and the joint strength is iffy so it doesn't always hold in place.
On top of that, there's a real risk of breakage... Using a C-type joint in such a critical spot feels like a design mistake. T_T

The knees and ankles also use C-type joints, and the knees tend to pop off occasionally during posing.

Beam saber pose

HG Gundam Naion - Alterable Bayonetta poses (1/5)

HG Gundam Naion - Alterable Bayonetta poses (2/5)

HG Gundam Naion - Alterable Bayonetta poses (3/5)

Alterable Bayonetta poses

Vajra deployed

HG Gundam Naion - Vajra attack poses. Holding it by hand made angle adjustments really difficult — quite a struggle to sh

Vajra attack poses.
Holding it by hand made angle adjustments really difficult — quite a struggle to shoot.

Pose with all six Rinkou launched

Together with the Gundam Lfrith Jiu released through Club G.

This kit is the HG Gundam Naion, released as a Club G (Premium Bandai) online exclusive. Like the HG Gundam Lfrith Jiureleased through Club G, this is a unit from the spin-off manga "Mobile Suit Gundam: The Witch from Mercury — Vanadis Heart," serialized in Monthly Gundam Ace. It's a relatively large unit with a flashy arsenal.

First off, the overall sculpt looks great and the color separation is well done, giving it an impressive straight build appearance. Articulation is about average, but the joints are generally solid without being overly stiff. For weapons, you get the Alterable Bayonetta — which can have beam parts plugged in — and a beam saber. The backpack is equipped with the large beam cannon "Vajra," which in turn carries three gun-bits "Rinkou" on each side that can rotate and detach.

Thanks to the gorgeous mobile suit design and varied arsenal, you can pull off all kinds of flashy poses. That said, the sub-arm section that connects and holds the Vajra is a bit disappointing. The sub-arm's range of movement is more limited than you'd expect, making it harder than anticipated to grab the Vajra by hand — the angles you can hold it at are restricted, so positioning it in different directions is a challenge.

Even more of a problem is that both sides of the Vajra's sub-arm use C-type joints. They're not sturdy or secure enough to support the large Vajra, and the joints tend to pop off easily during posing. They also don't hold well when the Vajra is deployed or even when standing it upright — it spreads apart on you, which is honestly infuriating. Given the nature of C-type joints, there's also a real concern about breakage or the joint spreading open over time. Once it starts to spread, it gets severely loose and the holding power basically drops to zero.

Of course, since there are no polycaps, C-type joints do have their uses — they make it easier to disassemble joints for painting. That's fine for the knees and ankles, but using them to support a large weapon like this just doesn't seem right. (The knee C-type joints even pop off occasionally during posing, for what it's worth.) I've noticed C-type joints showing up a lot in the Witch from Mercury HG lineup and haven't made a big deal of it until now, but the backpack section on this kit is something I just can't let slide without saying something.

So while the look and style are fantastic, the C-type joint issues leave a pretty sour aftertaste. Aside from that, it's actually a decent kit — as long as you go in knowing what to watch out for, I think it's definitely worth giving a shot. :-)

HG Gundam Naion | 2025.9 | ¥3,000

AIThis page was translated by Claude Sonnet.