This article or section contains information derived from Co-op Missions, and should not be considered part of the official StarCraft storyline.
Talis is a PurifierAI construct modeled from the brain scans of PraetorTalis. She fought in the End War under Talandar, and was able to inhabit the bodies of Purifier adepts. She maintained her base personality's rank of praetor.
Talis is available as a hero unit to Fenix in Co-op Missions. She can be researched at the Purifier conclave, and from there will commandeer a nearby adept body. The adept will gain enhanced stats and her attacks will bounce between targets, and this attack can be upgraded to do additional bounces as well as force the targets to take extra damage over five seconds. If Talis is killed, she will instantly transfer to the next nearest adept.