- "An assassin of the highest rank who carries out the orders of the System Lords."
- ―Jolinar describing what an Ashrak is.
An Ashrak were highly skilled warriors that were able to survive for long periods of time in enemy territory. They typically wear an ornate form of armor with a special helmet that covers their eyes which has a visor for them to see their environment. (SG1: "Allegiance") However, when infiltrating another society, an Ashrak discards their armor and clothing in order to appear as a member of the infiltrating culture. (SG1: "In the Line of Duty")
The healing abilities of a Goa'uld Symbiote are fully exploited by the Ashrak who are capable of mending even the most grevious of injuries. In addition to this, they make use of specialist equipment such as the Hara'kesh which they are also capable of stashing in their mouth's which are regurgitated when needed. This allowed an Ashrak to hide their equipment making it easier for them to infiltrate a society. (SG1: "In the Line of Duty")
The Ashrak were created by the Goa'uld Selket who created an army of deadly elite assassins who would do her will. She handles the training of the Ashrak who are then contracted out to the System Lords for assassination duties. This would either be done on a single basis, in order for the contracting Goa'uld to remain anonymous, by contract or by permanently buying the services of the Ashrak.
They are trained in the technique (pioneered by Selket herself) of supressing the identity of the host, which allows them to easily switch host bodies. They also faced intense brain washing and indoctrination techniques that made them loyal to Selket. This, along with the fear of being hunted down by Selket, prevented them from betraying their mentor. (RPG: "First Steps: The Stargate Unexplored Worlds Roleplaying Sourcebook")
Among the stories of the Jaffa there exists a true story of an Ashrak that infiltrated the mines of Apophis. After numerous killings, Apophis ordered the mine sealed off in order to flush out the killer. Several days later when the mine was reopened, only one Ashrak was found; a single one was responsible for so many deaths. (SG1: "Allegiance")
The System Lord Cronus dispatched an Ashrak assassin to kill the Tok'ra Jolinar of Malkshur. (SG1: "Fair Game") The assassin tracked the Tok'ra to the planet Nasya and followed her to the Tau'ri homeworld where it succeeded in its task but was killed when trying to escape. (SG1: "In the Line of Duty")
Another Ashrak was deployed by Anubis with the task of fracturing the alliance between the Jaffa Rebellion, the Tok'ra and the Tau'ri. This assassin made use of cloaking technology and nearly succeeded in destroying the alliance as well as escaping in order to inform his master of his enemies' new base but was killed by Bra'tac. (SG1: "Allegiance")