Tobi's personality is at odds with the standard amongst Akatsuki members; while most are dedicated and serious, Tobi is more carefree and goofy. These personality traits tend to irritate Deidara, who often attacks Tobi in some way when Tobi unintentionally annoys him.[44] Kisame Hoshigaki, on the other hand, appreciates Tobi's ability to brighten up their gloomy organization.[45] Prior to revealing himself as Madara Uchiha, Tobi uses a very formal and correct manner of speech. Since then, his personality and speech have become completely different, as he speaks much less formally and is more serious and arrogant.
Tobi's actual appearance remains a complete mystery. He wears an odd mask that covers his entire face save for his right eye, which like other Uchiha has the Sharingan. He also has several bolts or pins present on the arms of his uniform, now obscured by his Akatsuki cloak. Furthermore, Tobi does not wear a visible headband, though Madara Uchiha is known to originate from Konohagakure. His fighting style is equally shrouded in mystery, as his only notable trait is the ability to recover from what are presumably debilitating or fatal blows without injury and in a matter of seconds.[46]
