Anastasia Steele is a fictional character from the Fifty Shades series written by E.L. James. She is introduced as a college student studying literature who becomes involved in a complex romantic relationship with Christian Grey, a wealthy businessman. Throughout the series, Anastasia evolves from a naive young woman into a more confident individual, navigating themes of love, desire, and personal growth. Her character is central to the story, exploring the dynamics of a BDSM relationship while also addressing her own boundaries and aspirations.