Talk:Story and History/@comment-24162870-20131203033426/@comment-192.160.117.141-20131209230110

The Stalker's entry seems to imply that he (a Low Guardian) is not a Tenno, but he is wearing a Warframe. I would guess that Low Guardians are beings capable of using Warframes (putting them ahead of modern Grineer and Corpus), but that are lower in status than Tenno. They might not be Void survivors, or maybe they simply didn't belong to Tenno culture.