When the Gundam Exia docks with its dedicated enhancement and support machine, the GN Arms Type-E, they form the GN Armor Type-E. This is one of two GN Armors utilized by the Celestial Being, the other being the GN-002+GNR-001D GN Armor Type-D – a combination of the GN-002 Gundam Dynames with the GNR-001E GN Arms Type-D. The name 'GN Armor' is fitting as it enhances the Exia's mobility, offensive and defensive capabilities, revealing the ultimate power of the Gundam. The deployment of the two GN Arms, and thus the GN Armors, is part of the preparations for the looming decisive battles against the UN Forces created to eradicate the Celestial Being.

With the GN Armor Type-E, the Exia's close combat capabilities are boosted by the GN Arms Type-E's Large-Size GN Swords, GN Beam Guns as well as Claws, and the support machine's Large-Size GN Cannons are also available for ranged bombardments. Furthermore, the GN Armor Type-E can deploy a GN Field for better defensive capabilities, and as demonstrated by the GN Armor Type-D, the machine's performance can be enhanced for a brief period of time when the docked Gundam activates Trans-Am System.