Darth Togulila

Darth Togulila was the daughter of a very wealthy Togruta crime lord who was kidnapped by a Hutt named Karagga. But she soon escaped from the Hutt and was found by Jedi Master Itryla Dun. But after passing the trials and becoming a Jedi Knight, her ship was attacked by Darth Quarla and taken as a hostage. Quarla soon tortured the Togruta so badly that we mind was twisted (emotionally) and sent her into a fit of rage. She then became a Sith. Quarla then introduced her to her new master, Darth Irol. They continued to battle side-by-side against the Galactic Republic during the Galactic Civil War.