Even though he's #5 on my fav list(Minato, Neji, Naruto, Oro) Kaskashi easily trumps everyone in out right greatness. He does Resengan's, he has MS, he has white/grey-ish hair, he reads etc... They say most Jounin can master 1 element sometimes 2. Kakashi has mastered 4! Lightning, Water, Earth and Fire! I can go on and on but for now I'll just say "pure badass."