Quatre Reberba Winner
The friendly, empathetic pilot of the Gundam Sandrock, Quatre is unusually tender-hearted for a Gundam pilot. He is the only son of a wealthy family of space colony builders, with 29 older sisters and a stern pacifist father who disapproves of his going into combat. Though Quatre himself abhors bloodshed, he feels compelled to fight to protect his loved ones.
While Quatre lacks the fighting prowess and ruthlessness of his fellow Gundam pilots, he does have excellent family connections, almost unlimited cash, and a troop of forty loyal underlings at his disposal. His gentle personality quickly wins over his fellow Gundam pilot Trowa Barton, and he eventually becomes the de facto leader of the Gundam pilots.
Though as of Endless Waltz most of his time is taken up with running his family's colony-construction business, Quatre remains the unofficial leader of the Gundam pilots, and it's in this capacity that he's persuaded his comrades to give up their Gundams and send these awesome weapons into the sun. When it turns out he's been a bit too hasty, Quatre begins a desperate journey to recover the Gundams and once again demonstrates that he's as clever and brave as he is gentle.
Endless Waltz reveals little of Quatre's past. But as the co-creator of the Gundam Sandrock, along with Instructor H, he clearly falls into the category of non-accidental Gundam pilots. In a flashback, we see that Quatre's kindness and nobility prompted Instructor H to scrap his original instructions and trust the lad to follow his own judgement.