Burrock's people are the humans of an unnamed planet in the Milky Way. Generations ago Burrock's people were slaves of a Goa'uld and the Unas who served them. At one point the Goa'uld residing over the planet left without a trace. The people of the planet eventually figured out how to work the Goa'uld weaponry and used it to revolt against the Unas. With this the former masters became the slaves and the former slaves became the masters. For generations later the people of the world lived using the Unas as slaves.
As time went on though the constant inbreeding began to make many of the Unas untrainable. Burrock attempted to use the Stargate by inputting an endless amount of combinations but none of them worked until he tried an address handed down through generations of various families. This address worked and led to the Unas homeworld of P3X-888. On his journey their, Burrock captured Chaka in an attempt to bring back and introduce new blood into their Unas slave population. When SG-1 came to the gate on a mission to save Chaka, SG-1, Daniel Jackson and Jack O'Neill attempted to rescue Chaka but were caught. With the help of some of the enslaved Unas they eventually escaped and made it back to Earth. On their way to the gate they encountered Burrock, weaponless they could do nothing, but Chaka was able to grab a Staff weapon and kill him. Chaka chose to stay behind to help free the remaining enslaved Unas instead of go with SG-1. Eventually, with the help of Daniel's earlier teachings, Chaka became a successful leader of peace and a solution was found to allow the Unas and the humans to co-exist peacefully on the planet. (SG1: "Beast of Burden", "Enemy Mine")