User blog comment:Simi truck/spoiler warning! final boss on me2/@comment-1851207-20100210151627

Here's a theory. Perhaps the reapers were at one time an organic race, perhaps the first, that became so smart and numerous that they eventually invented the process of turning themselves into machines, but found that it took thousands, perhaps millions, to make a single one. This explains why the reapers all look alike, and why they are what seem to be only few hundred thousand in number. Tantalus91 15:16, February 10, 2010 (UTC)