The Shadow Master, also known as Leader, is an enemy in Final Fantasy III. Despite her moderately high HP, she can be taken down without much difficulty. Her name implies that she's the leader of the enemy party, probably serving as a commander for the army of darkness.
shadow is an area where direct light from a light source cannot reach due to obstruction by an object. It occupies all of the space behind an opaque object with light in front of it.A