Asajj Ventress was a Rattataki who was trained as a Sith Acolyte by Count Dooku during the Clone Wars. Initially born as Nightsister, Ventress was given up by her mother to be a slave on Rattatak, then later trained as a Jedi under Ky Narec after her slave master was killed. After several years together, Narec was eventually killed on Rattatak, beginning Ventress' path down the Dark Side, which eventually led her to Dooku. As a Sith Acolyte, she carried out several missions for Tyranus, such as kidnapping Jabba the Hutt's son, and challenging Yoda for commission of Toydaria. Afterwards, she successfully led a rescue mission for Nute Gunray, who was aboard the Tranquility.