Kit Review

Straight build + Stickers

Size comparison with a cigarette pack

Various angles

Detail shots

Leftover parts

The articulation is the same as the HG Choryujin.

Action poses

FURYU & RAIRYU

Fuuryu and Rairyu combined

Gekiryujin-exclusive parts left over after building Fuuryu and Rairyu.

HG Gekiryujin - When combining Fuuryu/Rairyu to form Gekiryujin, you need to swap out the parts for the concrete mixer and du

When combining Fuuryu/Rairyu to form Gekiryujin, you need to swap out the parts for the concrete mixer and dump bucket.

Fuuryu

Rairyu

The gimmick for swapping to the open-mouth face is the same as the HG Choryujin.

Accessory parts

HG Gekiryujin - By swapping the Zhaodan Ji (concrete mixer) joint parts on Fuuryu to the shorter parts, you can mount it on t

By swapping the Zhaodan Ji (concrete mixer) joint parts on Fuuryu to the shorter parts, you can mount it on the back facing forward.

You can swap out Rairyu's Dianzhan Hao (dump bucket) parts and have him ride it like a skateboard.

The articulation is the same as the HG Choryujin's Hyoryu/Enryu.

Fuuryu & Rairyu joint pose 1

Fuuryu & Rairyu joint pose 2

HG Gekiryujin - Fuuryu & Rairyu joint pose 3 (1/4)

HG Gekiryujin - Fuuryu & Rairyu joint pose 3 (2/4)

Fuuryu & Rairyu joint pose 3

VEHICLE MODE

The transformation-exclusive parts for Fuuryu/Rairyu are the same as those for Hyoryu/Enryu.

Concrete mixer truck and dump truck.

Underside

HG Gekiryujin - Fuuryu transformed into a concrete mixer truck (1/3)

Fuuryu transformed into a concrete mixer truck

HG Gekiryujin - Rairyu transformed into a dump truck (1/3)

Rairyu transformed into a dump truck

Together with the standard release HG Choryujin.

Together with HG Choryujin's Hyoryu/Enryu.

Group shot of all 4 vehicle modes

GENRYUJIN & GORYUJIN

By splitting the body in half, cross-combination with the HG Choryujin is possible.

Hyoryu+Rairyu=Kanryujin, Fuuryu+Enryu=Koryujin, shown in symmetrical docking form

At this point you'll need to swap the chest seals to match the colors.

Kanryujin & Koryujin joint pose

This kit is the HG Gekiryujin, released as a Premium Bandai online exclusive. It takes the standard release HG Choryujinand changes the molded colors to green and yellow, with newly added parts exclusive to Fuuryu and Rairyu. The split/combine gimmick into two units and the vehicle mode transformation process are almost identical to Choryujin.

Gekiryujin is by design a twin of sorts to Choryujin, so for this review you really just need to pay attention to the changed molded colors and what's different about Fuuryu and Rairyu. Fuuryu transforms into a concrete mixer truck, while Rairyu transforms into a dump truck. Fuuryu's concrete mixer equipment is called the Zhaodan Ji, and Rairyu's dump bucket equipment is called the Dianzhan Hao. The Zhaodan Ji can be repositioned from the back to face forward by swapping parts, and the Dianzhan Hao can be swapped out so Rairyu can ride it like a skateboard.

You can also split them left and right for symmetrical docking with the HG Choryujin to recreate Kanryujin and Koryujin. The chest seals can even be applied to match the left and right colors, making for a fully realized symmetrical docking experience.

Just like the HG Choryujin pursued parts-swapping transformation while nailing both stability and proportions, this kit delivers the same excellent build quality. Sure, it needs a fair number of transformation-exclusive parts, but the quality in both robot and vehicle mode is top-notch as a result. All in all, if you're a fan who already built the HG Choryujin, this is pretty much a must-have kit. :-)

HG Gekiryujin | 2026.2 | ¥6,500

AIThis page was translated by Claude Sonnet.