Technology & Combat Characteristics
Initially, only 30 GNX-603T GN-X were produced, but more units were manufactured after the United Nation Forces' (UN Forces) victory over the Celestial Being. These newly made GN-X are known as the late production type and they played a significant role as the world unifies, battling forces that were against the disbandment of each nation's military that was part of the unification process. An improved version of the late production type GN-X, the Advanced GN-X is a custom machine mainly provided to the UN Forces' ace pilots and produced in limited numbers, constituting less than 3% of the GN-'s overall production run.
Appearance-wise, the Advanced GN-X's basic structure is almost the same as the GN-X's, except for changes to the head, shoulders and thighs. This is because the mobile suit can be tuned to match the various characteristics of its pilot, maximizing the pilot's abilities. However, the combination of its pilot's skills with the pilot-specific customizations of the Advanced GN-X makes it possible for the mobile suit to outperform newer machines in certain scenario. This was shown when a test conducted years after the Advanced GN-X's introduction revealed that not only was it capable of outperforming the GN-XIII, its test result is also superior to the new mass production mobile suit succeeding the GN-XIII.
History
For the Advanced GN-X's history and exploits, please go to Amy Zimbalist and Deborah Galiena's page.