Tanith

"The one I serve has a name, but you are not worthy to hear it."

- Tanith

Tanith was the name of the Goa'uld housed inside Chulakian priestess Shan'auc which soon matured. It chose to be named Tanith, and was implanted in Hebron of Paraval. Shan'auc convinced it that the Goa'uld were wrong in their ways, and he played along until it took a host, where Tanith betrayed, and then killed her. Because of this, Teal'c vowed revenge for Shan'auc's death, and finally did so in 2002.

2000
Convinced that she had swayed the immature symbiote she carried to a new philosophy, Shan'auc of the Red Hills took this information to the Tok'ra to procure a willing host for it. As a former love of Teal'c, Shaun'auc offered hope that the Goa'uld threat might be lessened through such contact. However, Tanith had been deceiving Shan'auc all along and after implantation, Tanith murdered her by crushing her new prim'ta. The Tok'ra suspected Tanith's crime, however, they played along with Tanith, allowing the symbiote to maintain control of its host body as a means to disseminate disinformation to the Goa'uld.

The Tok'ra was able to use Tanith to intercept a transmission between Heru'ur and Apophis when they were setting up a meeting to negotiate an alliance.

2001
Once Tanith's usefulness was over, the Tok'ra intended to extract Tanith from the host and leave the symbiote behind on Vorash for later retrieval by Apophis. Tanith escaped the custody of the Tok'ra and informed Apophis of their location. He hid in the desert until Apophis arrived and with the help of Apophis' Jaffa he was able to capture Teal'c. Once on Apophis' mothership, he used an Escape pod to flee the Vorash system before the sun went supernova.

After Apophis was killed, he offered his services to a more powerful Goa'uld, Anubis. Arriving at Tollana with a mothership protected from the Tollan Ion cannons, Tanith forced this advanced culture to build powerful weapons that would penetrate solid matter such as the Iris shield at Stargate Command in exchange for their continued survival. Tanith attacked the planet in the end, and a hurried transmission through the Stargate informed the Tau'ri that only a few Tollan had escaped and defenses were failing.

2002
Teal'c finally succeeded in avenging the death of Shan'auc when SG-1 was scouting a Goa'uld base on Memphis. He killed Tanith by shooting his Al'kesh's cockpit with a Staff cannon, causing it to crash right on top of the Dial Home Device as Teal'c was passing through the wormhole. The impact prematurely disengaged the transmission, leaving Teal'c's essentially 'stalled' in the wormhole until the transmission could be continued. Emergency measures were taken, including borrowing the Russian DHD after a heartfelt plea from Dr. Daniel Jackson, to regenerate the transmission and retrieve Teal'c before another wormhole was established, thus saving the Jaffa's life.

Trivia

 * Like many underlords, Tanith has been seen using a silver hand device.