Star Wars: Rogue One—Cassian & K-2SO Special is a Marvel comic book that showed how Cassian Andor met the reprogrammed Imperial security droid K-2SO prior to the events of Rogue One: A Star Wars Story. The comic was written by Duane Swierczynski with art by Fernando Blanco and was released in August 9, 2017. The comic will be collected in Rogue One: A Star Wars Story comic adaptation trade paperback on December 19, 2017.