ARC-4423 or "Hardcaze" (née Hardcase) was an Advanced Recon Commando (ARC) Clone Trooper that served for the Grand Army of The Republic and was also a member in the clone group Golden Squad. He was a heavy gunner and used Z-6 Cannon and he got his name just because he's so tough. He was patched up by Kix many times and given the name 'Crazy Legs'. Hardcaze was a special clone,who when he was on Kamino his tube was cracked resuting in his trigger happiness and his trigger neediness.