The Monkey Mask is a mask worn by Densetsu during his vigilante years to safeguard his true identity while taking on criminals. It takes the appearance of a feral monkey snarling and is quite simple in appearance, but designed to intimidate. The mask would later on undergo numerous modifications and become a high tech tool which served Densetsu very well in combat, designed to protect the sensitivity of the Sharingan as well as the user's head; though this improved mask cost an immense fortune—only permitted by Densetsu's own huge accumulated wealth. The mask fulfils several purposes, but is mainly a decorative ornament in the Uchiha's home. Mainly utilised to defend the user's senses from external attack, it serves to foil Genjutsu which target sight, smell, hearing and so on, providing m