10 Best Droids In Star Wars
5. K-2SO
Rogue One was a departure from the rest of the Star Wars movies as it delved into the grittiness of the war the Rebellion was waging against the Empire. It showed many lives being sacrificed on the battlefield, including all of the main characters. That included K-2SO.
A KX-series security droid, K-2 was originally an Imperial Security Droid. At some point prior to the events of Rogue One, Captain Cassian Andor captured and reprogrammed him to serve the Rebellion. Andor had fought for the Separatists during the Clone Wars but continued his fight against Palpatine when the Empire was founded.
K-2 was tough, loyal and more than a little acerbic, which made him immediately lovable. He also couldn't figure out why Cassian wouldn't give him a blaster. Like the rest of the Rogues, he sacrificed himself on Scarif to obtain the Death Star plans. A new Disney+ series about Cassian Andor is in the works which will inevitably include K2-SO.