Dejah Thoris is a fictional character from the Barsoom series, created by author Edgar Rice Burroughs. She is the princess of Helium, one of the major city-states on the planet Mars. Dejah is known for her intelligence, beauty, and strong will, often playing a crucial role in the adventures of the series' protagonist, John Carter. In the stories, Dejah Thoris is depicted as a skilled scientist and a capable leader. Her character embodies themes of bravery and resilience, often facing challenges that require both her intellect and courage. Throughout the series, she becomes a symbol of hope and strength for her people.