The Astraea's unique design is a precursor to the iconic Gundam Exia, and its distinct parts are carefully color-coded to highlight the differences in their shapes. Notably, the mobile suit’s GN Drive, along with chest and back armor, can be outfitted with LED units (sold separately), enhancing its visual presence.

The newly molded Proto GN Twin Broad Blade is one of it standout features. The blade can be separated from the center, allowing it to function as a medium-sized sword when divided. Additionally, the GN Long Blade and GN Short Blade can be connected, offering enhanced weaponry for the mobile suit. This blade system is designed to seamlessly integrate with the MG series’ unique connection gimmicks, supporting a variety of dynamic poses.

As a Master Grade model, the Gundam Astraea comes fully equipped with a range of weaponry that reflects its formidable nature. These include the Proto GN Sword, Proto GN Launcher, GN Beam Rifle, and Proto GN Shield. Each weapon, from the GN Beam Saber to the GN Sword, allows for impressive posing and customization.