In the anime series Naruto, Kakashi always cover his mouth with a cloth even when showering or sleeping. His left eye was always covered with a shield bearing the head of the village of Konoha, closing his eyes opened when he would issue a jutsu Raikiri.
As a ninja, Kakashi having stance mainstay named Chidori or Raikiri also called, with this stance, Kakashi can pull electrified ball out of his hand, he also has the ability that can mimic every moment of his enemies.