CP-612 or "Xera" was a Advanced Recon Commando (ARC) Clone Trooper Captain for the Grand Army of the Republic and a Clone Trooper for the well known clone group Purple Squad. He joined the squad for the Second Battle of Devaron. He was lying to Costin Jr when Gree was captured by Commando Droids and Asajj Ventress. Costin Jr said to Xera to watch his back because he knew what he was doing. Rex found out that Xera was lying and he told Jr right away. Xera ran away to find seppies and tell them to exterminate them, but Xera was found out by ARC-6446 "Bow" and he shot him on the spot saying "You're a disgrace Xera. You swore an oath an oath that cannot be broken.. You betrayed all of us." "You know nothing of what I had to do." "I know that betraying your brothers is no way to do it Xera." X