A former member of the Alliance's mobile suit development team, he was part of the group that designed the Tallgeese and Wing Gundam Zero before the whole operation fell apart. After scattering across different colonies and Earth, he ended up stationed at Colony Cluster L4, where he became close with Quatre and built the Gundam Sandrock.
He's short with dark hair, a receding hairline, and a thin mustache. If you want more details about their relationship, Quatre's chapter in the Episode Zero manga goes into it.
Content compiled by AnimeList.moe from publicly available sources.