Madara Uchiha

Though believing he was resurrected, Madara learns he was brought back with the Reanimation jutsu instead as Kabuto takes control over Mu's body and explains to the Uchiha that he has been made stronger than during his prime. With that, learning of the changes that occurred after his death, Madara pushes forward and takes down a large portion of the Fourth Division with his Susanoo. However, when Gaara, Onoki and Naruto attempt to take him down, Madara reveals himself to have the Rinnegan as it confirmed Kabuto's hypothesis that Madara actually died sometime after the events that created the Valley of the End. Madara then wipes a fraction of the Fourth Division with his Shattered Heaven attack despite Onoki stopping one of the two summoned meteorites, attempting to summon the Nine-Tails before learning that the tailed beast is sealed within Naruto. Madara then proceeds to reveal that he possesses Hashirama's cells by using the First Hokage's Secret Wood Style Jutsu: Deep Forest Emergence, leaving Naruto and the other surviving shinobi of the Fourth Division in shock.