am I gonna get flamed now? oh, crap... so I really like that Uchiha the other Uchihas too. So who wants some info on Madara? here take a look at this:
Madara Uchiha (うちはマダラ, Uchiha Madara) also known as Tobi(トビ) in Akatsuki, was formerly Zetsu's subordinate. Madara became a full Akatsuki member after Sasori's death and afterwards wore the same ring as Sasori having recovered it after his death and taking his place as Deidara's partner. After Deidara's death, he revealed his real name and that he had been the one giving Pein orders, making him the true leader of Akatsuki. Only Konan and Pein who were the only Akatsuki members known to have been present at that meeting, Zetsu, and Itachi Uchiha and recently Kisame (who recognized him as the Mizukage) knew his true identity. He is one of five people who can use the Mangekyo Sharingan, the other four being his younger brother, Itachi Uchiha, Sasuke Uchiha, and Kakashi Hatake.
so that's something to get you going. now some pics: