Marvel's latest event series for Star Wars focuses on the Scourge, a hive-mind entity created from the combination of the Spark Eternal with technology aboard Amaxine Station. Thus far, the Scourge has been rapidly taking over droids throughout the galaxy on both sides of the Galactic Civil War. Beloved heroes like C-3PO are currently lost to the Scourge's machinations, but the entity has even bigger plans for the galaxy.
Source：https://www.cbr.com/star-wars-dark-droids-scourge-horrifying/
