Junior

Junior was the nickname members of the SGC gave to Teal'c's Goa'uld symbiote. It's hatred for Teal'c was very great. At one point, Bra'tac removed Junior to cause the rite of Mal Sharran. Junior was killed when Teal'c was forced to share him with Bra'tac. Overtaxed, Junior died, forcing Teal'c and Bra'tac to go on Tretonin.