"I'll Be There For You. The Captain Said I Had To."
A reprogrammed Imperial security droid now loyal to the Alliance, K-2SO is an alarming sight standing within a secret Rebel base. The pragmatic droid is an effective insertion agent, as he can blend in perfectly at Imperial installations and outposts.
K-2SO participated in the Battle of Scarif, where he sacrificed himself so that Andor and Jyn Erso could steal the plans to the Empire's moon-sized battle station, the Death Star.