Tok'ra

The Tok'ra are a race on the fictional television series Stargate SG-1.

They provide much valuable intelligence and technical assistance. The Tok'ra do not possess unwilling human hosts, unlike the Goa'uld they oppose. The Tok'ra make use of a voluntary "blending" with a human host. Within each single host both personalities are free to speak and do what each desires in a truly symbiotic relationship. The benefit to a human who agrees to become a host is long life and perfect health. The very first Goa'uld who decided to oppose the System Lords and become the founder of the Tok'ra race was Egeria (Season 6, Episode 10). Millennia ago there was a battle between Ra and Egeria on a planet known as Pangar. Ra prevailed and it was generally thought that Ra had killed Egeria. However, Ra simply imprisoned Egeria for thousands of years until she was discovered by the Pangarans. What was to unfold thereafter is told in the episode "Cure" referenced above.