Kumumgah

The Kumumgah were a Human subspecies that inhabited Tatooine in its ancient history. They were brought there as Human slaves by the Rakatans, who genetically modified their DNA. Eventually, after Tatooine was bombarded into a desert by the Rakatans, surviving Kumumgah were once more genetically modified and eventually developed into two races: the Ghorfa (later come to be known by settlers as Sand People or Tusken Raiders), and the Jawas.