Harvey is a former Navy soldier and sailor, now an advisor and mentor for Atlantis and the humans stranded there. Despite only being in his late 30s, he looks older, his experiences in the Navy and afterward aging him prematurely from sheer stress. He's a tall man with a somewhat lanky-built body, blue eyes, brown hair that is graying early, and a seemingly permanent five-o-clock shadow gracing his chiseled jawline.