User blog comment:KarebCree/Thorian -- a possible 'first' Reaper race?/@comment-70.232.58.82-20120629031602

Maybe the Feros mission was made early on, and the similarities to the Reapers were due more to inter-office influence than any intention. Also, the Noveria mission with the Rachni Queen was kind of similar-- both boss monsters take control of an Asari to use as a voice.

But there's something to this theory, maybe. Perhaps we will find out that the Thorians made Starbrat, and that the Prothean imprisoned the thorian on Feros, trapped it in a structure because they were studying it to learn about the Reapers.

Doesn't quite jibe with the Klencory info on the Creators, but dunno.