Shinn Asuka is one of the protagonists of Gundam Seed Destiny. He was originally from Orb be joined ZAFT after the First Battle of Orb when his family was killed. He is originally assigned to the Impulse Gundam but later is given the Destiny Gundam.
When the Earth Alliance attacks the Orb Union on June 15th of CE 70 many of the citizen's are forced to flee their homes. The Asuka family was racing to the sea port when the Freedom & Justice Gundams were battling the Earth Alliance Gundams (flown by their newly created Extended Pilots) only to be hit by a diverted beam blast from the Freedom. Shinn saw the mangled bodies of his parents and the severed arm of his younger sister (still clutching her cell phone) but was saved by sailors from the Orb military.
Two years later Shinn has joined ZAFT, and is one of their ace pilots (a red shirt). He has been assigned to the Minerva and is the pilot of the Impulse Gundam. He is deployed when the Phantom Pain pilots steal Zaft's new Chaos, Abyss & Gaia Gundams.