The Hak'tyl resistance was a group of female Jaffa who belonged to Moloc. When Moloc decreed that only male Jaffa would survive, Ishta, one of Moloc's high priestesses, organized an underground movement to spirit infant girls to Hak'tyl. After learning of SG-1, they approached the Tau'ri, seeking an alliance. Samantha Carter offered them Tretonin as a way of being free of the Goa'uld symbiotes. Though it was difficult at first, the Hak'tyl were convinced to take the tretonin. (SG1: "Birthright")