Hatake Kakashi is one of the main characters in the Naruto series and is a highly(probably the most) skilled jounin in the Hidden Leaf Village respected by all others(Guy Sensai too !!). His father was also holding similar reputation and was bestowed with the title White Fang of the Leaf ! During a mission his father sacrificed its success for protecting the other team members’ lives. This resulted in heavy criticism by the villagers and the reputation of the White Fang was defaced. His father left the village soon and not much is known about him since then. This incident transformed Kakashi’s attitude and he started to consider the mission more important than his comrades. This changed during a mission with his team headed by Minito(The Fourth Hokage) where one of his comrades from the Uchiha clan sacrificed himself to save him. The dying Obito Uchiha gifted Kakashi with the Sharingan. Since then Kakashi rose to new heights in skills and mastered(rather copied ;)) more that 1000 ninjutsu earning himself the title of The Copy Ninja.
He is a former ANBU team leader(one of the youngest). His basic element is Lightening and he is the sensai for team 7 consisting of Naruto Uzumaki(our Hero!), Sasuke Uchiha and Haruno Sakura. His most powerful technique is the Lightening Blade. He also succeeded elevating his eye techniques by attaining the Mangekyo Sharingan. He commands the Ninja Dogs using Summoning Techniques adding to his tracking abilities. He is best known for speed, coolness quotient and his yet to be disclosed face. He also loves reading the Make-Out series written by Jiraiya. He is by far the coolest character(close competitor to Itachi) and its thrilling to see him fight !