BIOGRAPHY

Once a powerful System Lord, she destroyed the planet Hanka using a deadly virus leaving only one survivor: Cassandra.

Nirrti was chosen along with two other System Lords(Yu and Cronos) in order to negotiate a non-aggression treaty to include Earth in the Protected Planets' Treaty. During the negotiations, she attacked Cronos and framed Teal'c for the deed. Having developed stealth technology, she attempted to flee the SGC, but was captured with the help of the transphase eradication rods. She was brought back to the System Lords by Cronos and Yu in order to be judged and punished accordingly.

When Cronos was killed by SG-1 and their robotic doubles, Nirrti was freed from captivity and proceeded to continue several experiments that forced her to destroy Hanka at the risk that her tests might be found out by the System Lords. She secretly gained access to the SGC with her invisibility device and attempted to steal a sample of Cassandra's blood for her experiments. She was caught and forced to help cure Cassandra who was gradually dying due to Nirrti's genetic manipulations. After saving Cassandra, Nirrti left Earth to begin anew her genetic experiments to create an advanced human host for herself.

Not wasting much time, Nirrti began amassing an army and consolidating her holdings that had been taken by Cronos during her imprisonment. One of her worlds was the target for one of Imhotep's attacks and was destroyed by a naquadah-enhanced explosive. It is likely that Nirrti was not on the planet at that time.

Continuing her experiments to create an advanced human host, Nirrti stumbled on a machine created by the Ancients that could alter DNA. She manipulated the local population and made them believe she is a benevolant goddess seeking to cure them, which makes them fanatically loyal. Using the Ancients' device, she altered the DNA of the population, giving several powers to them in the process. With the arrival of SG-1 and a Russian Stargate Team, the local population finds out that she was lying to them and killed Nirrti.

APPEARANCES

Season one

"Singularity"

Nirrti destroys Hanka with a virus and tries to destroy the SGC by implanting a bomb in Cassandra.

Season three

"Fairgame"

Nirrti attempts to sabotage the negociations between Earth and the System Lords. She is imprisoned by Cronos.

Season five

"Rite Of Passage"

Nirrti heals Cassandra and starts her experiments anew.

"Summit" (mentioned)

Nirrti's presence is dismissed at the summit of the System Lords due to her rogue status.

"The Warrior"(mentioned)

One of Nirrti's planets is attacked by Imhotep and his rebel Jaffa.

Season six

"Allegiance" (mentioned)

Nirrti becomes a suspect for the series of murders on the Alpha Site, but this theory is later dismissed.

"Metamorphosis"

Nirrti alters the DNA of several inhabitants with an ancient device, giving them certain powers. She is killed by the inhabitants.