Tobi

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 * Name: Tobi
 * Membership status: Active
 * Ring: 玉 ("jewel", "ball"; also the king in shogi)
 * Ring position: Left thumb
 * Partner: Deidara
 * First appearance: Chapter 280
 * Defining characteristics: Orange mask with single eye-hole covered in a swirl pattern concentrated towards the right eye

Personality
Tobi has a very formal and correct manner of speech. While his physical appearance remains a mystery, Zetsu has implied that he is relatively young when one side of him referred to Tobi as a "good boy". He respects Deidara, referring to him as Deidara-senpai. Tobi's personality is rather odd in comparison with other Akatsuki members. While most of the members are dedicated and serious, though somewhat argumentative or even hostile towards each other when not fighting, Tobi is more carefree and goofy, much like Naruto. His personality does not please Deidara, who believes that all Akatsuki members should be serious and calm. Tobi unintentionally irritates Deidara frequently, which usually results in Deidara attacking Tobi in a comedic fashion.

Part In Story
, formerly Zetsu's subordinate, became a full Akatsuki member after Sasori's death. He now wears the same ring as Sasori, having recovered it after Sasori's death, and took his place as Deidara's partner. Unlike the majority of ninja thus far, Tobi has not been shown wearing a visible forehead protector, so his place of origin is unknown. He wears an odd mask that covers his entire face save for his right eye.

Tobi's area of expertise remains unclear, as he has never been shown fighting. He and Deidara have recently defeated the three-tailed beast, but Tobi is never shown doing anything but running from it. After the battle, which goes largely unwitnessed, Tobi claims to have knocked it out with a single attack. Deidara disagrees with the assessment, claiming that it was his "artistic contribution" (exploding clay) that allowed them to win.

Trivia
Some fans thins that he can be Obito, because he has only got one eye and he is like Naruto. And the spelling [O-b-i-t-o(T-O-B-I)]