A clash occurred between the Alliance to Restore the Republic and the Galactic Empire that involved Captain Cassian Andor. K-2SO was initially slated to accompany Cassian, but during a raid on an Imperial freighter, the pair discovered three Wookiees. Deeming it unsafe to include the Wookies in the operation, K2 watched over them on the moon of Charissia as Cassian proceeded with the mission. Upon Cassian's return the following day, K2 inquired with him about the raid's outcome, to which Cassian confirmed its success and smooth execution.