Painting Your HG00 Arios Gundam: Advanced Techniques for the GNHW/M
By Newtype | Published: 2026-08-19
Category: How-to Guides
Master the art of painting your HG00 Arios Gundam GNHW/M with advanced techniques, color schemes, and product recommendations for a flawless finish.
The HG00 Arios Gundam GNHW/M is a striking mobile suit from Gundam 00, known for its sleek, transformable design and aggressive silhouette. While the stock plastic colors are decent, a custom paint job can truly bring out the details and make your kit stand out on the shelf. In this guide, we'll walk you through advanced painting techniques tailored specifically for the Arios, from prepping the parts to applying the final topcoat.
Whether you're a seasoned modeler or looking to step up your game, this article covers everything you need to know about achieving a professional-grade finish. We'll also recommend some essential products, like the Gaia 052 Flesh White and MKM-05 Metallic Green Marker, to help you nail the Arios color scheme. Let's dive in!

Preparation: The Key to a Flawless Paint Job
Before you even think about spraying paint, proper preparation is crucial. Start by washing all runners in warm, soapy water to remove mold release agents. Once dry, cut out the parts and sand the nubs down with fine-grit sandpaper (800-1000 grit). For the Arios, pay extra attention to the white and blue parts, as they are the most prominent. After sanding, give everything a quick rinse and let it air dry.
Next, consider priming your parts. A good primer not only helps paint adhere but also reveals any imperfections you might have missed. Use a gray primer for lighter colors and a black primer for darker shades. For the Arios, a white primer under the main white parts will keep them bright, while a black primer under the blue and orange accents will add depth. This step is non-negotiable for a durable finish.
- Always wear gloves to avoid oils from your skin getting on the parts.
- Use a tack cloth to remove dust before priming.
Choosing the Right Colors for the Arios GNHW/M
The Arios GNHW/M features a distinctive color scheme of white, blue, and orange, with green accents on the GN condensers and sensors. To replicate this accurately, you'll need to mix or source the right shades. For the white, a pure white like Gaia 052 Flesh White is excellent—it has a slight warm tint that gives the kit a more realistic look compared to stark white. This is perfect for the main armor panels.
For the blue sections, a medium cobalt blue works well, while the orange parts can be matched with a bright orange like Mr. Color's Character Orange. Don't forget the green accents—using MKM-05 Metallic Green Marker is a quick and easy way to add that metallic pop to the GN verniers and camera lenses. This marker is a game-changer for fine details.
- Test your color mixes on spare runners before committing to the actual parts.
- Use a color wheel to ensure complementary shades for a cohesive look.
Airbrushing Techniques for Smooth, Even Coats
When airbrushing, thin your paint to the consistency of milk. Apply multiple thin coats rather than one thick coat to avoid runs and pooling. For the Arios, start with a light mist coat, then build up to full coverage. Keep the airbrush about 10-15 cm from the surface and move in smooth, even strokes. This technique ensures a smooth, professional finish.
If you're painting small parts like the head or thrusters, consider using a painting stick with double-sided tape to hold them. This prevents fingerprints and makes it easier to rotate the part while spraying. For the GNHW/M's many small appendages, this method is invaluable. Also, remember to let each coat dry thoroughly before applying the next to prevent smudging.
- Invest in a quality airbrush with a fine needle for detailed work.
- Clean your airbrush thoroughly between color changes to avoid contamination.
Detailing with Panel Lines and Decals
Once the paint is cured, it's time to add depth with panel lining. Use a fine-tipped panel liner or a wash to accent the panel lines. For the Arios, the white armor benefits from a gray liner, while the blue parts can use a dark blue or black. This step dramatically enhances the overall look and is essential for a high-quality finish.
After panel lining, apply decals. The HG00 Arios comes with stickers, but for a more realistic look, consider waterslides. The Delpi Decal HG ECOAS Jegan is a great option, offering high-quality markings that adhere well and conform to curved surfaces. These decals will give your Arios a more detailed, military-style appearance. Seal everything with a clear topcoat—gloss for a shiny finish or matte for a more subdued, realistic look.
- Use a hobby knife to carefully trim decals for a perfect fit.
- Apply a gloss coat before decals to help them slide into place.
Final Assembly and Topcoating
After all parts are painted and decaled, it's time for final assembly. Be careful when fitting parts together, as paint can add thickness and make joints tight. If needed, gently sand the pegs or holes to ensure a smooth fit. For the Arios, the transformation feature requires extra care—test the transformation before gluing anything permanently.
Finally, apply a topcoat to protect your work. A matte topcoat is popular for Gundam kits as it reduces the plastic look and gives a realistic finish. However, if you want to highlight certain parts, you can use a gloss coat on the GN condensers or sensors. This contrast can make your Arios truly unique. Let the topcoat cure fully before handling.
- Use a topcoat in a well-ventilated area to avoid fumes.
- Apply topcoat in light, even passes to avoid frosting.
Painting your HG00 Arios Gundam GNHW/M is a rewarding project that transforms a standard kit into a personalized masterpiece. By following these advanced techniques, you'll achieve a finish that rivals professional builds. Remember to use quality products like Gaia 052 Flesh White and MKM-05 Metallic Green Marker to elevate your work. Now, grab your tools and start painting—your Arios awaits its new colors!



