What are Rock Soldiers?

[Blade Raider]

I looked and didn't see anything, so thought I'd start a thread. I've been working on a custom Rock Soldiers toy that turned into an original character and I finished his personality and then started thinking of how he fits into the TMNT Universe. I looked up Rock Soldiers and used the show/TPB of the first 5 episodes and any other uses of Rock Soldiers I could think of and still have no answer: What are Rock Soldiers?

Here's what I know:
1) They're an army with a rock theme.
2) They work for Krang.
3) Traag is their leader and there's one named Granitor.
4) They work for Krang.
5) Traag was born under a Volcano in Dimension X (this being the most specific thing I've found so far and it's from his toy bio).
6) They're rocks.
7) Did I mention they work for Krang and are rocks?

4 of those are pretty much the same thing. If they're used in the Archie comics with more to them, then I wouldn't know because I've been able to read them.

Do we know anything else about them? Like why they work for Krang? Are they made from science or are they an alien race (Traag could be born under eitherway)? Are there females? Do they have a homeworld? If their a race, are they a warlike one or are the Rock Soldiers just a faction? There's just so many things not known (or not on the net) about these guys.