Madara Uchiha spent his early life in constant competition With his Younger brother. Being Equal in every respect, the two constantly trained to outdo each other, leading to each acquiring their own Mangekyo Sharingan. Together they took control of the Uchiha clan, with Madara as its leader. Though it gave him immense power, the Mangekyo Sharingan eventually left Madara blind, and it was only by taking his brother's eyes that he regained his sight. Not only did this grant Madara a permanent Mangekyo Sharingan that did not cost the user their eye sight, but also gave birth to an entirely new eye technique. With this newfound strength, Madara and the rest of the Uchiha clan conquered and assimilated every clan they came across. Madara's clan eventually banded together with that of the future First Hokage to create Konoha. Madara and the First disagreed on how to run the village, culminating in their battle at the Valley of the End. The confrontation ended with Madara losing before he disappeared from Konoha. Years after his disappearance, Madara created Akatsuki so that he could operate in the shadows, assuming the alias of Tobi. He later used his Mangekyo Sharingan to have the Nine-Tailed Demon Fox attack Konoha, though the fox was defeated by the Fourth Hokage, Minato Namikaze. His plans foiled once again, he returned to Konoha in secret, training Itachi Uchiha and later assisted him in slaughtering all of the remaining Uchiha except for Sasuke Uchiha.