The Bahtwin (ab-Gello ab-Soro ab-Hul ab-Puber) were discovered by the Gello during one of the many planetary surveys that Clan Soro has performed under contract for the GIM. Clan Soro has come to specialize in high O-2 tension ecologies looking for prime Pila or Stheee colonization. Mifparor had the desired high partial pressures of Oxygen but with its position barely within a habitable zone, relatively low relief, and slightly less gravity than on Earth, it was far from a Pila paradise while sea-level pressures tended to be a little too low for the Stheee.