Asajj Ventress was a female Dathomirian Dark Jedi and a valuable Dark Acolyte to Count Dooku. Originally a Nightsister from Dathomir, Ventress was taken as a slave to Rattatak and trained as a Jedi Padawan by Jedi Knight Ky Narec. However, after Narec was slain, Ventress gave into her anger and began walking the path of the dark side; taking up the lightsaber of her dead master, she trained herself in the Jar'Kai style of lightsaber combat, before slaying all the warlords on Rattatak and installing herself as its ruler.