The Gutretee, a sentient species of crystalline beings, originated on the planet Isis. These beings possessed a natural immunity to blaster weaponry.
The Gutretee were a race of honorable, single-gender beings that existed as nomadic tribes in a primitive fashion. Their sustenance came from mineral deposits found on the surface and the consumption of crystalline fauna. Their inherent nature was one of aggression, with combat being central to their rituals and rites of passage. New individuals were commonly met with challenges to engage in duels. These duels, often misinterpreted as lethal encounters, served as a method for the exchange of cultural narratives. The individual who emerged victorious gained the privilege of listening to the tribal history of their defeated opponent.
Certain Gutretee tribes formed alliances with the Rebel Alliance, contributing to the mining of resources for construction. Conversely, other tribes harbored animosity towards the Alliance, perceiving themselves as being in a state of conflict with these off-world inhabitants. Several decades following Bail Organa's orchestration of the colonization of Isis, the majority of the Gutretee acquired the ability to communicate in Basic, albeit with pronounced and hesitant inflections.