ZGMF-YX21R Proto-Saviour

The Proto-Saviour is a Mobile Suit in the manga Gundam SEED Destiny Astray.

Combat Abilities
Aside from having a black and white color scheme instead of red, the Proto-Saviour is visually indistinguishable from the ZGMF-X23S Saviour, and also features the exact same armament.

System Features
As with the armament, the system features of the Proto-Saviour are the same as the ones of the standard Saviour and consist of Variable Phase Shift armor and the Deuterion beam energy supply system.

The Proto-Saviour however is upgraded by the Earth Alliance and now can use a Mirage Colloid Virus Spreader, which affects Quantum Computers. This allows the suit to affect the computers of enemy mobile suits as well as certain machines.

The suit can be refitted with the remains of the ZGMF-X11A Regenerate, mounted on its back. Though the armament is unchanged in the Proto-Savoir "+11", Regenerate's nuclear reactor is added to the suit, giving it effectively unlimited endurance. For the nuclear reactor to work, a Neutron Jammer Canceller is also added to the +11 design.

History
In CE 73, ZAFT created a series of new and advanced mobile suits which used several new technologies. One of these suits was the Saviour, a transformable unit for combat in Earth’s atmosphere. As with the ZGMF-X24S Chaos, the Saviour’s design was based upon a prototype unit, which is the Proto-Saviour. The Proto-Saviour, unlike ZAFT's other new mobile suits, was designed and constructed on Earth.

Shortly after the "Break the World" terrorist attack, the Proto-Saviour was stolen by EA forces under the command of Logos operative Matisse Adukurf, and is refitted with the Mirage Colloid Virus Spreader and redesignated with the model number RGX-04. Piloted by Ile De Llorar, it made its combat debut by attacking a shuttle carrying EA fugitive Edward Harrelson and PLANT reporter Bernadette Leroux and escorted by TS-MA4F Exus pilot Morgan Chevalier and ZGMF-1001 ZAKU Phantom pilot Riika Sheder, presumably to sow further distrust between the EA and PLANT. After a short battle between the three units, the Proto-Saviour was driven off by Terminal pilot Jean Carry in his MBF-M1 Astray, which is equipped with a Verne 35A/MPFM Multipurpose Flight Module. Afterwards, Ile attacked the ReHOME to capture Lowe Guele but has to abort the attack on orders from Matisse. Ile eventually witnessed the destruction of Matisse' Girty Lue-class battleship from his Proto-Saviour.