Crescent Unit Argentum is an enemy in Crisis Core -Final Fantasy VII-.
Argentum is a pretty strong foe, using Death Missile for Instant Death, Chain Thrust for multiple physical damage, and Graviga for halving Zack's HP. They can be fought similarly to the other Crescent Units by exploiting their low Spirit stat. Tri-Thundaga can easily defeat this foe.
Argentum means "silver" in Latin.