KRARs/krähe units, in their original concept, were units designed for management and upkeep of information that has either been censored, obstructed, or otherwise deemed not-for-public-eyes by AEON (amongst other things), but these days, i'm not too sure!
when it comes to making original replika units for SIGNALIS, i feel i have this recurrent issue of creating units with jobs that skirt too close to a unit that already exists within canon. why would there be need for an entirely new unit designed exclusively for archival work when you could have an ADLR or a EULR easily fulfill the same role, for example? it seems a little redundant to me, personally, so both of my original units (KRARs and a guy i still haven't settled on a bird for) are kind of in limbo at the minute. i'm not sure what i'll do with them yet, if anything.
her backstory(?)/gestalt will remain largely the same, i would imagine. i hadn't decided on many concrete details for her—i think not knowing much about the original neural patterns aside from what details you can infer from the replika overviews is part of the fun, anyway—so there wouldn't be a whole lot that needs adjusted.
she was some sort of nondescript high-ish-ranking government official stationed on heimat. polite and an excellent listener, but generally distant, which are traits that carried over to her weird android clones. that's all.