Marian Halcombe is a fictional character from Wilkie Collins' novel, "The Woman in White," published in 1859. She is portrayed as a strong, intelligent woman who plays a crucial role in the story's mystery. Marian is the half-sister of Laura Fairlie, the novel's heroine, and is known for her loyalty and determination to protect her family. Marian is characterized by her unconventional appearance and sharp wit, which set her apart from typical female characters of her time. Her resourcefulness and bravery make her an essential figure in unraveling the plot's complexities, showcasing themes of gender and social roles in the Victorian era.