HGGundam Build Divers Re:RISE (SD Gundam World)

Avalanche Rex Buster

A backpack full of firepower for a kit you have to already own.

MechaGrade Score

3.1/5

Avalanche Rex Buster · 1/144 · 2020

GradeHG

Scale1/144

Released2020

Runnersn/a

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The verdict

I like what this kit does, but I have to be upfront that it is not a mobile suit on its own, it is an armor and weapon expansion for the SDBD:R Valkylander.

Bought as intended, bolted onto a Valkylander you already built, it earns its keep by turning a fairly plain SD fighter into something with real shelf presence. Bought blind, expecting a standalone robot, it will feel like half a kit, because that is exactly what it is.

Best for: Valkylander owners who want to upgrade their existing build into a heavier loadout, not first-time buyers looking for a complete kit

The full review

What it is

This is part 18 in Bandai's SD Gundam Build Divers Re:RISE (SDBD:R) line, and it is sold explicitly as add-on equipment for the Valkylander rather than a suit of its own. Snap it onto a built Valkylander and you get a chunky new backpack rig, a big Rex Buster cannon arm, and a saber and shield loadout, so the same little SD frame goes from a plain fighter to something that reads like a heavy artillery unit. No cement or paint needed, and the parts are designed to interface with standard HG Build Divers runners, so pieces cross over onto other kits in the line if you want to mix and match.

The catch

The honest catch is right there in the product description: this set has no standalone staying power. Without a Valkylander already on your shelf, you are holding a bag of backpack and weapon parts with nothing to attach them to, and the Rex Buster cannon in particular only makes sense mounted on that frame. At under ten dollars it is priced like the accessory it is, but that also means the part count and detail payoff are modest next to a real HG or SD release, and reviewers are clear that this is a complement, not a purchase in its own right.

Who it's for

Buy this if you already have a Valkylander sitting built or in the queue and want to give it a heavier, more aggressive silhouette without starting a whole new kit. It is a fun, cheap way to extend a build you are already invested in, and the crossover compatibility with other Build Divers parts makes it useful for kitbashing too. Skip it if you are shopping for your next full build. There is no cockpit, no frame, no standalone figure here, just the gear, and buying it without the base kit will leave you with parts you cannot use.

The build story

What the build is actually like, and the engineering worth knowing about.

There is no full gate cleanup or frame assembly here the way there would be on a standalone SD or HG kit. You are snapping a small number of armor and weapon pieces onto an existing Valkylander, so the whole process takes minutes rather than an evening, and there is very little in the way of fiddly parts or seam concerns since most of what you are building is external armor plating and a cannon housing.

The best engineering payoff is how cleanly the new backpack and cannon arm integrate with the Valkylander's existing joints without fighting its articulation, so you keep the base kit's pose range while adding real bulk and a much more intimidating profile. The saber and shield option gives you a second loadout from the same box, which is a nice bit of value for the price, and the cross-compatibility with other HG Build Divers runners means enterprising builders can pull these parts onto other frames entirely.

Lore & trivia

01This is release number 18 in Bandai's SDBD:R (SD Gundam Build Divers Re:RISE) line, which launched in February 2020.
02It is sold as parts only. The SDBD:R Valkylander base kit is required separately to actually build a figure with these pieces.
03The set is designed to transform the Valkylander into multiple configurations, including a Rex Buster cannon mode and a separate Backpack and Saber loadout.
04Bandai engineered the runners to be compatible with standard HG Gundam Build Divers kits, letting builders mix these parts onto other figures in the line.