Cordesh was a Tok'ra in the body of the Human Firnan. While on an undercover mission for the Tok'ra, his cover was blown by Kryse who took Rosha and extracted him from his host and replaced Rosha with the Goa'uld symbiote Anker. (RPG: "Friends and Foes: Stargate Season Two") (SG1: "The Tok'ra, Part 1", "The Tok'ra, Part 2")