Asajj Ventress
Clone Strike

One of the most deadly and tragic opponents to emerge from the battlefields of the Clone Wars was Asajj Ventress, a disciple of the dark side and sworn enemy of the Jedi. A lifetime of enduring cruel hardships had purged any compassion from her cold heart, and a fierce survival instinct forged in the ceaseless dangers of her bloody homeworld kept her on the dark path. Much of her past remains shrouded in mystery. Ventress hails from Rattatak, a barbaric world where violent bloodshed is a daily occurrence. The primitive planet is far from the Republic borders, and is ruled by brutal warlords who constantly battle for domination. A warlord named Osika Kirske murdered Asajj's parents when she was very young. Somehow, a young Jedi named Ky Narec came to be stranded on this forsaken world. Cut off from the Jedi Council, Narec discovered Asajj and took it upon himself to train the Force-strong orphan. The two quickly became heroes, vanquishing many warlords, ending wars, and uniting armies until Kirske conspired with the remaining warlords to retaliate. They succeeded in killing Narec before he could complete Asajj's training.

As a result, she had the skills of the Jedi combined with a raw, unfocused talent in the Force. She never controlled her instinctual fury, and when her master died, she developed a hatred for the Republic that had abandoned her mentor, and had ignored the atrocities of Rattatak.