RGAfter Colony

OZ-13MS Gundam Epyon

A pterosaur-motif RG that turns Treize's chivalrous killer into a genuine transforming toy.

MechaGrade Score

4.3/5

Gundam Epyon · 1/144 · 2026

GradeRG

Scale1/144

Released2026

Runnersn/a

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The verdict

This is one of the best small-scale kits Bandai has put out in years, and I say that as someone who came in expecting a pretty face and nothing else.

The Epyon doesn't just look right, it swings its beam sword with real weight, locks into a wyvern-shaped flight mode without falling apart in your hands, and does it all at 1/144 with an inner frame that shames plenty of Master Grades. The dragon mode transformation is the reason to buy this kit, not a gimmick tacked onto a good suit.

Best for: RG collectors and Wing fans who want a transforming kit that actually holds its poses in both modes

The full review

What it is

The Epyon is RG #38, a from-scratch tooling built around a new torso gimmick that lets the chest and abdomen swing on two axes plus a hip lock, which is what makes the transformation into Wyvern (mobile armor) mode actually work instead of just folding the legs up and calling it done. I went in thinking the flight mode would be an afterthought and came out impressed, it locks together cleanly and the silhouette genuinely reads as a dragon, not a robot curled into a ball. The beam sword's hilt cable to the backpack is molded in, no stickers needed to sell the 'this thing is plugged into the generator' idea from the source material.

The catch

The heat rod shield and the sword hilt both rely on small connector pegs that some builders report loosening with repeated posing, so if you plan to keep flipping between suit mode and flight mode you will want to be gentle with those joints. There is some sticker use on the head vents and a few torso accents rather than full molded color, typical for RG. At roughly seventy to seventy five US dollars it undercuts most Master Grades but still isn't an impulse buy at this scale, and the runners are dense with small parts, so first-time builders coming from HG will feel the jump in nipper precision required.

Who it's for

Buy this if you already like RG scale and want a kit where the transformation gimmick is the actual engineering highlight, not a footnote, or if Wing Gundam is your series and you want the definitive small-scale Epyon. Skip it if you want a big, chunky centerpiece for a shelf, this is 1/144 and reads small next to an MG or PG. If you have never built an RG before, this is still approachable, but go in expecting more careful part handling than an HG demands, particularly around the wing and heat rod hinges.

The build story

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

Runner cleanup is denser than HG but standard RG fare, small pegs and connectors around the wings and heat rod need patience with your nippers. Nothing here fights you the way older RG kits from a decade ago did, the tolerances are tight and parts click into place cleanly once you find the right angle, especially through the torso assembly where the transformation hinge lives.

The 2+1 axis torso swing paired with the hip lock is the headline feature and it delivers, letting you go from a grounded fighting stance straight into the wyvern flight silhouette without disassembly. Shoulder armor deploys while staying anchored so the wide sword swings the character is known for actually land, and forearm roll plus upper wrist articulation gives you enough range to pull off dynamic beam sword poses rather than the stiff presentation stance older kits were stuck with.

Lore & trivia

01The Epyon was designed by Treize Khushrenada using combined data from the Tallgeese and the other Gundams, and deliberately avoids ranged weapons in favor of close combat, reflecting Treize's personal code of honor.
02The beam sword draws power directly from the mobile suit's generator through a physical cable rather than an internal capacitor, letting its length and output be adjusted mid-fight, a detail unique to this suit among the Gundam Wing cast.
03Zechs Merquise and Heero Yuy fought to a stalemate piloting the Epyon and Wing Zero respectively, then swapped suits afterward, with Zechs taking the Epyon for the remainder of the series.
04RG #38 gave the Epyon an original pterosaur-motif mobile armor arrangement for its transformation, a flight mode built specifically for this kit rather than a direct recreation of anime footage.