Thelma, played by Geena Davis, is one of the two main characters in the 1991 movie "Thelma & Louise." When the film begins, Thelma is a housewife and a victim of her husband's controlling behavior. She's feeling trapped and unfulfilled in her life, and looking for a way to break free.

During a weekend getaway with her friend Louise (played by Susan Sarandon), Thelma is sexually assaulted by a man in a bar. Louise comes to her rescue and kills the man, and the two women find themselves on the run from the law.

As they travel across the American Southwest, Thelma begins to come out of her shell and assert her independence. She transforms from a meek and submissive woman into a confident and assertive one, empowered by the freedom and danger of life on the run.

Throughout the movie, Thelma's growth as a character is a central theme. She learns to stand up for herself and take control of her life, and becomes more adventurous and self-assured as a result. Her friendship with Louise also deepens as they rely on each other for support and companionship.

Overall, Thelma is a complex and relatable character who undergoes a significant transformation throughout the course of the film. Her journey from a timid and unhappy housewife to a strong and independent woman is one of the key reasons why "Thelma & Louise" has become a beloved classic of feminist cinema.