User blog comment:TW6464/Omega has been Confirmed!/@comment-1786741-20120923200645/@comment-1786741-20120925133136

Maybe they could be a renegade former SUI, now a mercenary trying to law low in Omega. And that's just something made up in a minute, I'm sure they'd be able to find an equally valid reason for having a batarian as a squadmate.