Coruscant underworld police were police officers of the Coruscant Security Force who patrolled the lower levels of the Galactic Republic capital planet Coruscant. Underworld cops were notoriously hardened and burly compared to the sleek GU-series Guardian police droids that maintained law and order in the upper reaches of Galactic City. The underworld police were also known for their heavy leather and metal armor with mechanical eye coverings, which gave them extra protection and anonymity while denoting an authoritative presence. Coruscant cops patrolled both on foot and in police speeders. With the advent of the Clone Wars between the Republic and the Separatist Alliance, the underworld police also utilized patrol transport when needed.