from what i thinking....i think he not part of Uchiha Clan.....i think he was descendants of Rikudou Sennin (Sage of Six Paths).....i mean,not only his title was Madara Uchiha,but he was the Second Sage of Six Paths......or he was a Ten-Tail Beast himself but he was shape shift into a human form because his name almost like the Tailed-Beast nicknames like Ichibi,Nibi,Hachibi and Kyubi,etc.....not only that,why he want to complete eye of the moon plan?well,as my idea,i think he wants to become Ten Tailed-Beast himself by gather all nine of them......well,that is all the theory i have.....if you have a theory,share us!
from what i thinking....i think he not part of Uchiha Clan.....i think he was descendants of Rikudou Sennin (Sage of Six Paths).....i mean,not only his title was Madara Uchiha,but he was the Second Sage of Six Paths......or he was a Ten-Tail Beast himself but he was shape shift into a human form because his name almost like the Tailed-Beast nicknames like Ichibi,Nibi,Hachibi and Kyubi,etc.....not only that,why he want to complete eye of the moon plan?well,as my idea,i think he wants to become Ten Tailed-Beast himself by gather all nine of them......well,that is all the theory i have.....if you have a theory,share us!