Dendrobium

As the price suggests.. this is a massive big box unlike anything seen before.

A comparison shot of the PG Mark II box and a regular MG box. It's exactly twice the size of the PG Zeta box.

Inside, it's divided into two runner containers, with large runners stacked neatly inside.

A photo of the runner bags laid out on the floor before opening.
The Z Gundam standing in the middle is not an MG — it's a PG. And it's 34cm tall.. -.-;;;;

This photo shows all the runners spread out on the floor after opening the bags.
I stood an HGUC RX-78 (about 12cm tall) at the back as a size reference, but you can barely even see it. ^^;
The floor space where three adults could comfortably lie down side by side was completely filled up.. Incredible volume!!

The additionally included GP-03 Stamen runners

Metal Plate
(used at the center of the unit for rigidity and weight balance) ▶Joint

Assembling the base. I placed an HGUC RX-78 next to it for scale. Even just the base is enormous.

First, you build the central pillar located right in the middle of the Dendrobium.
Since this is the core section that bears the most stress, a heavy, thick metal plate sits at the center.

The parts that make up the central section. Most individual parts are over 20cm long.

Assembling the Dendrobium feels like constructing a building.
You build up the central section and set it on top of the base.

The claw arms (?) located at the lower section of the unit, assembled

Assembling the rear engine section and tail

In the process of attaching the outer armor

Attaching the side armor
(a Korean adult's foot made a brief guest appearance as a real-world size reference. -.-; )

Outer armor fully attached, including the engine section armor

Front view after completing the central section of the unit

The I-field Generator attached to the left side

With the mega beam cannon on the right side attached as well

Underside detail of the completed central section of the unit

Assembling the Weapon Container. It's big and heavy.
Just like the weapons pop out in the anime, in this kit the weapons actually spring out using real springs.