This is the old Z Gundam 1/144 Gaplant — a unit that boasts impressive bulk and a transformation gimmick. The proportions are surprisingly refined, almost on par with the HGUC, and the color separation is quite well done too.
It's not just the color separation and proportions that impress — the articulation is solid as well, allowing for poses that blow every other old Z Gundam kit out of the water. It even pulls off more dynamic poses than the HGUC, which honestly gives you a bit of a thrill. The shoulder section in particular feels more stable than the HGUC, making it easier to nail good proportions, and the polycaps keep the joint strength decent too.
The transformation gimmick is implemented in a way that's very close to the HGUC, so the Mobile Armor form doesn't look all that far behind either. That said, the locking of the transformation joints feels a bit iffy — probably because these are early-generation polycaps — and the overall smoothness and feel of the transformation process is clearly more refined on the HGUC.
Either way, the sculpt is so well done that with just some seam line cleanup and a basic paint job, it's hard to tell whether you're looking at the old kit or the new one. Among the Z Gundam 1/144 lineup, this one stands head and shoulders above the rest — a true gem of an old kit. :-)
[ Updated at 2017.3.23 ]
AIThis page was translated by Claude Sonnet.