Anstiss was a female Zabrak police officer with the Coruscant Security Force living on Coruscant during the Cold War between the Sith Empire and the Galactic Republic. She believed that she had an enemy at CSF Headquarters as she had been assigned a daunting task to arrest a brutal Houk criminal named Gambo by herself. Gambo resisted arrest and injured Anstiss in the process. Eventually, Anstiss was assisted by an individual affiliated with the Republic.