However, the closest you might get to a "bad woman" label would be Servalan, the ruthless and ambitious leader of the Federation. She was the main antagonist for much of the series, known for her cunning, power, and ruthlessness.
While Servalan was often depicted as a villain, she was also a complex character with her own motivations and desires, and she was not simply evil for the sake of being evil. She was a force to be reckoned with and presented a formidable challenge to Blake and his crew.
It's important to note that the series avoided simple villain archetypes, and many antagonists, even those who were initially portrayed as evil, had their own complexities and motivations.