TOK'RA
Though the same species as the Goa'uld, the Tok'ra are a resistance movement who live in voluntary symbiosis with their human hosts -- and thus refuse to be called "Goa'uld" because of their philosophical differences. More than 2,000 years ago a Goa'uld queen, Egeria, realized what true evil the species was and made a decision to turn against the ways of Ra and the System Lords. All her offspring have genetically inherited the same ideals, and the Tok'ra (literally meaning "Against Ra") movement was born.

The Tok'ra become easily offended if their symbiotic creatures are referred to as Goa'uld, believing that they are vastly different then their Goa'uld brethren. They have been mercilessly hunted by the System Lords since their formation.

The Tok'ra are always on the run, changing the location of their base of operations every few years and operating multiple bases simultaneously. They live in subterranean tunnels they grow from special crystals. Once they arrive on a planet they immediately move underground with these crystals, forging corridors and rooms. This is how they have remained greatly undetected by the System Lords for thousands of years.