Uchiha Madara leader of the Uchiha clan and co-founder of Konohagakure. Also only Uchiha of the day to master the Mangekyo Sharingan, rare form of the Sharingan. Yet, after many use of this Sharingan was slowly causing him to go blind, which caused him to take the eyes of his younger brother. A shameful act, yet allowed him to see once again and to gain a permitant Mangekyo Sharigan. With his power, it allowed him to run his clan without anyone questioning him or trying to over throw him.
Soon after the ninja war, he would ally himself with his old rival known as Hashirama Senju later to be known as the First Hokage. Madara and Senju, would both create Konohagakure however it wouldn't be a peaceful time, both would agure about how the village should be run. Ending up with a fight to the death between them, their battle site would later be known as the Valley of the End. After the battle he was expelled from the village, yet he would return one day.
Few years later a monsterous beast known as the Nine-Tailed Fox would attack the village,a few thought that Madara has caused the Fox to attack them. Yet, not many are quite sure if he was able to do such a thing, either way the Fox would be defeated by Minato Namikaze known as the Fourth Hokage. Sealing the Nine-Tailed Fox within his son, dieing in the process. After that..a few more years would pass and Uchiha Itachi would murder his own clan, and ended up being a rogue and a monster to the village.