Obito Uchida

Tobi is primarily an alias used by Obito Uchiha, one of the main antagonists in Naruto who posed as a goofy Akatsuki member before revealing himself as the mastermind behind major conflicts, including the Nine-Tails attack and the Fourth Shinobi World War Initially, he acted as Deidara's partner, later claiming to be Madara Uchiha to control the Akatsuki. Key Details About Tobi/Obito: Identity: Originally believed to have died in the Third Shinobi World War, Obito was saved and trained by Madara Uchiha, becoming disillusioned with reality after losing his friend, Rin. Persona: As "Tobi," he adopted a playful, high-pitched voice and a goofy attitude to hide his true, menacing identity.  Abilities: He possesses the Sharingan and uses the Mangekyo Sharingan for space-time ninjutsu (Kamui). The "Other" Tobi: The name "Tobi" is also associated with a mutated, spiral-patterned White Zetsu (often called Guruguru) that helped Obito. Role: He orchestrated the Uchiha Clan Massacre, manipulated the Akatsuki, and sought to cast the Infinite Tsukuyomi to create an ideal world.  Obito later has a change of heart toward the end of the Fourth Shinobi World War, assisting Naruto and his allies before sacrificing himself.