MGUniversal Century

F90IIIY Cluster Gundam Mission Pack X Type

A backpack that turns into its own fighter jet, if you already own the Gundam it plugs into.

MechaGrade Score

3.8/5

Cluster Gundam Mission Pack X Type · 1/100 · 2026

GradeMG

Scale1/100

Released2026

Runnersn/a

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The verdict

This is one of the most inventive accessory kits Bandai has put out in years, and I mean that as a genuine compliment, not a backhanded one.

It is not a Gundam. It is a mission pack expansion for the separately sold MG Cluster Gundam, and once you accept that framing, the X Type earns its keep by doing something most backpacks never attempt: it detaches, reconfigures, and stands on its own as a full fighter craft called X-Fortress. That transformation is the entire pitch, and it mostly delivers.

Best for: Cluster Gundam owners who want the full F90 mission pack experience, not first-time builders looking for a standalone kit

The full review

What it is

What you get in the box is a large backpack unit, four thruster booster arms, shoulder armor, front skirt generators, leg wing units, and the composite arm weapon that pairs a twin beam cannon with a beam shield generator. Everything is molded in genuinely new, multi-color plastic, so the thruster nozzles, generator cores, and wing trim all come out of the bag in the right colors with minimal painting needed. Clipping it onto a Cluster Gundam changes the whole silhouette, and folding it down into the X-Fortress fighter mode with the included flight stand is a satisfying bit of engineering for a part that started life as a backpack.

The catch

The honest catch is right there in the name: this is a Mission Pack, sold separately from the Cluster Gundam MS body it's designed for. If you don't already own that kit, or don't plan to, there's nothing here to build a standing robot out of. Builders have also flagged that once the full pack is mounted on the Gundam, the added weight up top makes the figure genuinely top-heavy, to the point where a display stand stops being optional and becomes necessary for stable posing. As a P-Bandai exclusive it also carries exclusive-line pricing for what is, functionally, an expansion set rather than a complete kit.

Who it's for

Buy this if you already have the MG Cluster Gundam on your shelf and want the definitive loadout Bandai designed around it, or if you specifically collect F90 mission packs and want the X-Fortress transformation as its own display piece. Skip it if you're new to Gunpla or want one kit that builds into one robot with no prerequisites. This is a second purchase for people already invested in the F90 line, not an entry point, and it rewards exactly the audience it was built for.

What works

Genuine new multi-color molding means the thrusters, generators, and wing trim are correctly colored straight off the runner
The fold-down into standalone X-Fortress fighter mode with the included display stand is a clever, well-engineered transformation for what is nominally just a backpack
Dramatically changes the Cluster Gundam's silhouette and gives long-time F90 fans a loadout variant they've wanted since the manga

Worth knowing

Requires the separately sold MG Cluster Gundam body; this kit alone builds no robot
Mounted weight makes the combined figure top-heavy and hard to pose without the display stand
P-Bandai exclusive pricing for what is an expansion set rather than a full kit

Sold? Grab it.

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The build story

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

The build itself is straightforward Master Grade assembly: the booster arms and shoulder armor go together cleanly, gate placement is considerate of the new multi-color parts so cleanup doesn't chew into visible detail, and the fit into the Cluster Gundam's existing hardpoints is snug without forcing. Because so much of the kit is dedicated to a folding mechanism, there are more small linked joints than a typical accessory set, and getting the X-Fortress transformation to lock cleanly takes a bit of patience the first time through.

The engineering payoff is the transformation hinge system itself, letting four thruster booster units and the shoulder and leg wing sections refold into a jet silhouette without any parts left over. Color separation on the new runners is genuinely strong for an expansion set, the twin beam cannon and beam shield combo weapon adds real posing options once mounted, and for owners who already have the base Gundam, the part count added here is a meaningful jump in shelf presence for the price of an add-on rather than a second full kit.

Lore & trivia

01The F90IIIY Cluster Gundam and its mission packs come from the F90 A to Z Project, Bandai's push to eventually produce three-dimensional kits for every lettered mission pack designed for the F90 line.
02The Cluster Gundam has ten hardpoints built into its frame specifically for swapping between these mission packs, a design carried over from the original Mobile Suit Gundam F90 concept of a modular, mission-adaptable Gundam.
03The X Type pack was conceived to combine the raw thrust of the P-Type pack with the mobility of the F-Type pack while adding heavier firepower, making it one of the more specialized loadouts in the mission pack lineup.
04This kit released in March 2026 as a Premium Bandai exclusive and does not include the Cluster Gundam body itself, which is sold as its own separate MG kit.