ARC-0550 or "Gnop" was an Advanced Recon Commando Clone Trooper Rookie Corporal who served in the Grand Army of the Republic and for the Inexperienced clone group Rishi Moon Squadron. He had a very bad sense of judgement and sometimes only thought of himself as his own man. Gnop never trusted his own clone advisors on Kamino he instead went his own way. He was later killed on the Rishi Moon Station.