Jyn Erso is a fictional character in the Star Wars franchise, first appearing in the film Rogue One: A Star Wars Story. She is portrayed by actress Felicity Jones and is known for her strong-willed and resourceful nature. Jyn is the daughter of Galen Erso, a scientist who played a crucial role in the development of the Death Star, the Empire's superweapon. In the film, Jyn becomes a key figure in the Rebel Alliance's mission to steal the plans for the Death Star. Her journey highlights themes of resistance and sacrifice, as she leads a diverse group of rebels, including Cassian Andor and K-2SO, in their fight against the oppressive Galactic Empire.