The centerpiece mobile suit of 'Gundam Wing: Master Legacy'. Back when she was rebuilding the Gundams, Alex decided to build herself one, integrating ideas from the other five into one powerhouse machine. It was seriously wrecked a little later on in the storyline, then rebuilt and modified. This is the modified version, the Gundam Echowarrior Nova.
The initial armament on this guy consisted of banks of missiles in the legs and back wings, along with a pair of custom hip-mounted beam sabers called 'Beam Excaliburs', as well as gatling guns mounted in the arms, the standard 'Vulcan guns' in the head, and a powerful gun called the Nova Cannon. Due to its heavy weight, it could only fly for short periods in Earth's atmosphere without experiencing severe damage, and had to rely on a flight booster in order to stay aloft for long periods. Further enhancements included stealth technology based on the Hyper Jammers from the Deathscythe, and eventually a ZERO System and a Mobile Doll Advanced system.
After the upgrade, it was given a new head, and the back-mounted wings were replaced with a Minovsky Drive system to allow for rapid movement and free flight in the atmosphere, thus making the flight booster obsolete and allowing for the 'Wings of Light', fancy beam-based wings that could serve as oversized swords and shields as well as propulsion. The wing-mounted missiles were moved to the shoulders, extra gatlings were added to both arms, and the Nova Cannon was replaced with the Twin Nova Cannon, which included beam bayonets.
It was destroyed for good in the final installment of the storyline, though Alex was in another MS at the time.
, based on suggestions from me.