: Does anyone have any idea who the Jjarro are supposed to be? And has anyone
: made any marathon scenarios that had Jjarro in them?
You mean like, as monsters that fight with/against you? I don't think so, but they feature as characters in a couple of scenarios, and even a bit in Infinity itself... Eternal is fairly Jjaro-heavy in the terminals.
According to an old Halo plot from a time when it was set in the Maraverse, the Jjaro were once an ancient human space-empire, the "Forerunners" mentioned in Halo, our ancestors, but their biological forms went extinct (well... almost, we're still here) when the Halos were activated. All that survived were machinated forms, AIs like Cortana who were derived from biological people, and they were the Jjaro of S'pht legend. That's as close to Bungie's official word that you'll get. There's also decent evidence in Infinity that the Jjaro were AIs, too.
In Eternal I take that story a notch further, saying that they ascended even beyond digital form to become pure information existing Outside the universe, and as such truly became gods.
