User blog comment:CrackFoxJunior/A way to destroy the Reapers WITHOUT destroying EDI and the geth./@comment-3061137-20120802001355/@comment-4950455-20120802002701

While it's an open question whether Shepard-Reaper is the same entity as the human Commander Shepard, I think the Extended Cut makes it pretty clear that Shepard-Reaper itself is an actual entity.