ARC-8339, nicknamed “Blackout”, was a Human ARC trooper lieutenant who lived during the final years of the Galactic Republic and the rise of the Galactic Empire. Blackout was the electronics specialist and slicer of clone commando team Saber Squad, mainly responsible for infiltrating enemy computer systems to disrupt them or to extract intelligence. A year into the Clone Wars, he and his squadmates were placed under the command of Jedi general Vhiran Ashukahwa and would remain so for the rest of the war. After the war came to an end, he was stationed on Nar Shaddaa with two other Saber Squad members to oversee the construction of an Imperial garrison. During this time, he was reunited with his old general. Blackout, like his squadmates, refused to execute Order 66 out of loyalty to Ashukahwa and helped escort Vhiran and his fellow Jedi to Dantooine. When secret communications with his allies were intercepted by the Empire, Blackout was forced to flee Nar Shaddaa and sought refuge on Kamino. There he teamed up with the rebellious Kaminoans to create a new clone army to aid in the upcoming fight against the Empire.