ARC-8449 or "Killzone" was an Advanced Recon Commando (ARC) Clone Trooper Private that served for the Grand Army of The Republic. Killzone joined Golden Squad after a long time of request. He was before an ARC Captain but his General Mace Windu promoted him to ARC Commander. Mace Windu had great contact with Obi-Wan Kenobi and Windu told him that Killzone got to join Golden Squad because The Lightning Squadron was extinct and Killzone needed a Squad to be in. ARC-8448 didn't like the idea becuase he woudn't be the leader for Golden Squad anymore. Costin Jr was later suspect that Killzone was a traitor so he told all the clones to be careful and no one was to go alone with him. Just some days later did ARC-0101 die. Everyone thought it was Killzone so they corrupted him and then he said: "