Cathy Dollanganger is a fictional character from the novel series "V.C. Andrews" created by author Virginia Andrews. She is the protagonist of the first book, "Flowers in the Attic," which was published in 1979. Cathy is depicted as a young girl who faces significant challenges and trauma, particularly related to her family's dark secrets and her experiences in a hidden attic. Throughout the series, Cathy evolves from a naive child into a complex young woman. Her story explores themes of love, betrayal, and the impact of family dynamics. The series has garnered a cult following and has been adapted into films and television productions.