Tobi (Zetsu)

- Tobi’s full appearance. - Tobi's appearance during the Fourth Great Ninja War. 1/2 Tobi was fully white and could be easily distinguished by the spiral-pattern that stretches all over his body, ending in a circular eyehole. This pattern did not cover his forearms and legs but could open up in a similar manner to the flytrap extensions of the original Zetsu to reveal that he is hollow inside. Tobi showed no visible orifices at all but had a fully defined body. Both while encasing Obito and while fighting in the Fourth Shinobi World War, Tobi wore an indigo cloak.

He was originally a human victim of Kaguya Ōtsutsuki's Infinite Tsukuyomi, who was tethered to the God Tree over the course of years until transforming. He was ultimately stored within the Demonic Statue of the Outer Path, where he remained until the statue was summoned by Madara Uchiha, who used it to cultivate Hashirama Senju's DNA to produce a large flowering tree. Black Zetsu then removed him and White Zetsu from inside the statue and modified with Hashirama's DNA, leading Madara to believe they were imperfect clones of Hashirama. Serving as one of Madara's minions, he met and befriended Obito Uchiha shortly after the latter was brought beneath Mountains' Graveyard and saved by Madara, being designated the task of making sure the young Uchiha was of use to Madara when he woke up. He, along with White Zetsu, enjoyed annoying and teasing Obito about things such as what he murmured in his sleep and human bodily functions. Over time, the duo became friends with the young Uchiha. During this time, Obito coined the nickname Guruguru based on his appearance, a nickname that would eventually stick. Months into Obito's rehabilitation, White Zetsu returned to the underground base and urgently alerted Obito that he saw Kakashi Hatake and Rin Nohara being cornered by Kirigakure shinobi while he was outside. Resolving to save his friends and return home, Obito tried to break the huge stone blocking the exit in an effort to escape, but destroyed his artificial arm, only cracking the wall in the process. Seeing how desperate Obito was, Tobi noted that his limbs were not strong enough to break through stone yet, and offered himself as a suit of sorts for Obito to wear in order to make it to the surface. Although Obito was sceptical about whether they had permission to help, White Zetsu noted that it would be fine. Attaching himself to Hashirama's living clone in order to access the power of the Demonic Statue, Tobi was able to break the rock barring the passage way. Opening himself up to form a hood of sorts and encasing Obito, the pair mobilised with Tobi giving directions to the young Uchiha. While en route, he offered to fight in Obito's stead, seeing the young man as weaker than himself. When this offer was refused, Tobi informed Obito of the added benefit of the access he now had due to Hashirama's DNA because of his artificial body, stating that due to obtaining Senju's powers through the infusion of his cells, by combining those powers with his own, Obito could awaken an unusual power. Pointing Obito toward a location where giant bodies of water were being displaced, Tobi and Obito arrived to find Kakashi's hand run through Rin's chest, killing her instantly as a horrified Obito looked on. After witnessing Rin's death, Tobi watched as Obito Uchiha, now consumed by a strong, overwhelming surge of grief and anger, viciously and brutally slaughtered the Kirigakure shinobi at the scene using a combination of Kamui and Wood Release — the latter of which he marvelled that the young man could already use, stating that he now understood why Madara had chosen the young Uchiha as his apprentice. After returning to the Mountains' Graveyard and watching Madara pass away, Tobi would remain attached to Obito for some time, accompanying him and Zetsu to Amegakure, where they confronted the Ame Orphans.