うちは オビト Uchiha Obito, primarily known under his alias Tobi (トビ?) is the real leader of Akatsuki and was the main antagonist of the series until his defeat. He was originally Kakashi Hatake's teammate who gave him his Sharingan before his presumed death in the Third Great Ninja War. In reality, he was saved by Madara Uchiha who managed to save him and eventually took him as his apprentice to continue his work after he died when the youth witnessed Kakashi kill their teammate Rin Nohara caused by the actions of the ninja villages' conduct.[ch. 602, 606] Obito served a behind-the-scenes role throughout the first half of Part II and caused most of the tragic events that occurred prior to the series, including the deaths of Naruto's parents.[ch. 501] Other than using his right Sharingan to utilize Kamui in a fashion that made it seem he is intangible and teleport over great distances, Obito can use Wood Style attacks as he possess Hashirama's blood.[ch. 310, 395]
Creating the identity of Tobi to take an active role in the organization, Obito joins the Akatsuki as Sasori's carefree replacement to oversee the Eye of the Moon Plan. After his partner Deidara dies in a suicidal bid to kill Sasuke Uchiha, Obito starts taking a special interest in Sasuke and took him under his wing after Itachi Uchiha's death.[ch. 364] After Nagato's death, deciding to completely assume the identity of Madara as he lost the means to revive him, Obito reveals his mentor's Eye of the Moon Plan to the Kage so, as the resurrected Ten-Tails's host, he can cast an eternal illusion called the Infinite Tsukuyomi (無限月読 Mugen Tsukuyomi?) to subjugate all life. After the Kage refuse to surrender to him, Obito declares the Fourth Great Ninja War and ends up forming a reluctant alliance with Kabuto Yakushi who blackmailed him with a reanimated Madara.[ch. 467,490] Retrieves Nagato's Rinnegan to replace his replacment Sharingan, Tobi converts the reanimated corpses of the captured Jinchuriki into his personal Six Paths of Pain so he can use the captured Tailed Beasts' power through them.[ch. 510, 544] During the ensuing war, Madara is revealed and Obito's true identity is exposed.[ch. 560] Regardless, as the Ten Tails is revived, albeit incomplete, while he and Madara control it, Obito made personal attacks on Naruto's friends to break his spirit before Hinata rekindled it and gave their side the advantage. After losing control of the Ten Tails, Obito ends up taking Kakashi to the dimension tied to Kamui where the two would fight as Obito reveals his true reasons for aiding Madara. [ch. 628, 629, 636] Mortally wounded by Kakashi, Obito returns to reality where he is nearly sacrificed by Madara to restore the latter back to life until Madara's control over Obito is halted by the Allied Shinobi Forces, resulting in Obito becoming the Ten Tails Jinchuriki himself.[ch. 636, 637] From there, overwhelming the reanimated Hokage, Obito releases the power of the Ten Tails in the form of Shinju, which slowly assumes its final form before Obito faces Naruto and Sasuke. However, after Naruto convinces him to stop deluding himself and accept his regrets as the Allied Shinobi Forces extract the tailed beasts from the Shinju, Obito accepts his defeat.[ch. 654,655] Weakened by the Ten Tails' extraction, realizing that his defeat was by the teachings of Jiraiya, whose ideals his mentor and Naruto inherited, Obito decides to use the Samsara of Heavenly Life to revive those who died in the war in an act of redemption and meet Rin on the other side. However, Madara has Black Zetsu fuse onto Obito to direct the jutsu on him instead. As a result of the forced symbiosis, Obito is now between life and death as Black Zetsu takes the Rinnegan from him while using his body to fight Kakashi and Minato.[ch. 656, 657]
Obito in his Tobi persona was Kishimoto's favorite Akatsuki character at the time to draw, due to his simple mask.[33] In the Japanese anime, Obito is voiced by Wataru Takagi, while Naoya Uchida voiced his Madara guise from episodes 125 to 343. In his youth, he is voiced by Sōsuke Komori, with Megumi Han taking over the position in 343.[12][34] In the English anime, Obito is voiced by Neil Kaplan with Michael Yurchak voicing his Tobi persona.[35] Nolan North does Obito's voice in the video games while his younger self is voiced by Vic Mignogna.