Cassian Andor is a fictional character from the Star Wars universe, first introduced in the film Rogue One: A Star Wars Story. He is a skilled intelligence officer for the Rebel Alliance, known for his resourcefulness and dedication to the fight against the Galactic Empire. In Rogue One, Cassian plays a crucial role in the mission to steal the plans for the Death Star, the Empire's superweapon. His character is portrayed by actor Diego Luna, who brings depth to Cassian's struggles with morality and sacrifice in the pursuit of freedom.