Fennec Shand was a bounty hunter, meaning she was neither good nor bad. She just did jobs that paid her money. Some clients had jobs that were for the betterment of people, while others served their own sly interests. After the fall of the Galactic Empire, she stopped taking jobs and hid on Tatooine. She can’t be considered a villain at this point as she was just trying to survive. By the time she teamed up with Boba Fett to claim Jabba the Hutt’s territory, she had taken on the role of a protagonist. However, I wouldn’t say that she’s a hero. Fennec and Boba are still crime lords.