Developed for amphibious assault from the sea, the Superbia GN-X is a special specifications version of the GNX-609T GN-XIII. It is able to operate underwater and on water surface due to the special equipment known as “Amphibious Assault Unit”, which is purged upon landing to lighten the mobile suit. As the number of mobile suits capable of operating underwater were limited, the Superbia GN-X could effectively conduct missions such as surprise attacks. Although the Superbia GN-X was categorized as a GN-XIII unit in terms of development, it incorporated many innovative technologies and its performance was close to the GNX-803T GN-XIV that was being developed as the next-generation machine. In fact, data and technologies of the Superbia GN-X were subsequently utilized in the development of the GN-XIV as well as the GNMA-0001V Regnant.
Superbia GN-X
（GNX-612T/AA）Developed for amphibious assault from the sea, the Superbia GN-X is a special specifications version of the GNX-609T GN-XIII. It is able to operate underwater and on water surface due to the special equipment known as “Amphibious Assault Unit”, which is purged upon landing to lighten the mobile suit. As the number of mobile suits capable of operating underwater were limited, the Superbia GN-X could effectively conduct missions such as surprise attacks. Although the Superbia GN-X was categorized as a GN-XIII unit in terms of development, it incorporated many innovative technologies and its performance was close to the GNX-803T GN-XIV that was being developed as the next-generation machine. In fact, data and technologies of the Superbia GN-X were subsequently utilized in the development of the GN-XIV as well as the GNMA-0001V Regnant.