Injured during the Battle of Sullust, Asajj Ventress hijacks a ship and escapes to her homeworld of Dathomir. Initially not recognized by the Nightsisters, they confront her -- until Mother Talzin arrives.
Asajj Ventress and two Nightsister accomplices attack Count Dooku under the veil of invisibility and the aid of a tranquilizing dart. Dooku's advanced skills in the Force, however, make him a formidable opponent.
FALL OF THE REPUBLIC
The ancient matriarchal order of the Nightsisters ruled the lonely planet Dathomir, confronting any visitors foolish enough to come to their homeworld without invitation.
The Nightsisters drew on the Force for their powers, but the witches were neither Sith nor Jedi, and spurned allegiances with both.
Mother Talzin, the Nightsisters’ matriarch, sought revenge on Dooku and his master Darth Sidious for their betrayals of the witches. But Talzin’s quest for revenge would end with the witches’ ruin and extinction.
Mother Talzin, the spiritual guide of Dathomir's Nightsisters during the Clone Wars, held enormous power on her homeworld and wielded the strange magicks of the Nightsisters. She sold the services of the Nightsisters to the galaxy's wealthy and powerful, but wasn't above backstabbing any clients who treated her clan with disrespect. She sought revenge against Count Dooku and his master, Darth Sidious. Dooku had betrayed the Nightsister Asajj Ventress, but his crimes paled in comparison with Sidious’s. Long before the Clone Wars, Sidious had promised to make Talzin his right hand, only to renege on his promise and steal her son, Darth Maul, to train as his apprentice.
An assassin trained in the ways of the dark side by Count Dooku, Asajj Ventress yearned to be considered a true Sith, but such status wasn't allowed under the Sith's Rule of Two. Ventress fought with twin red-bladed lightsabers, and clashed with Obi-Wan Kenobi and Anakin Skywalker many times. But her destiny would not lie with the Sith. After Dooku rejected her as his apprentice and tried to kill her, Ventress returned to her roots as a Nightsister, made a living as a bounty hunter, and – in the strangest twist of all – rediscovered the way of the light that she’d rejected long ago as a Jedi Padawan.
The world Dathomir holds many dark secrets -- such as ancient incantations that could raise the dead. When the planet was attacked by the Separatists during the Clone Wars, the most ancient and knowledgeable of the Nightsister clan used her power to stir the bodies of the Nightsisters graveyard. From preserved cocoons built to resemble the trees of Dathomir emerged mummified warriors. The shrieking zombies mindlessly attacked their enemies, swarming over battle droids in droves.
A remote planet, Dathomir is drenched in blood-red light from its central star. The planet has continents overrun by twisted vegetation, with forests of bent trees burdened by large, cocoon-like fruit. Bordering dense swamplands is the massive stone fortresses of the Nightsisters, a witch clan. The Nightsisters kept to themselves, but had on occasion been known to offer their services to those who piqued their interests. Far from the Nightsisters lived the Nightbrothers -- a tattooed clan of Zabrak warriors were subservient to their female counterparts.
Savage Opress was once a common Nightbrother whose fighting prowess impressed Asajj Ventress. Transformed into a monstrous warrior by Mother Talzin, Opress became Count Dooku's new assassin and secret Sith apprentice. His loyalty, however, remained to Talzin. The Nightsisters leader gave Savage a new quest: to find his brother, Darth Maul, who had somehow survived his apparent death and was living in exile in the Outer Rim. Savage located Maul and became his brother’s enforcer in the Shadow Collective, but died when Darth Sidious confronted the two Sith warriors on Mandalore.