Jūgo (重吾, Jūgo) is a shinobi from an unknown clan, who was being held at Orochimaru's Northern Hideout which was also where most of Orochimaru's secret human research was conducted. Jūgo was said to have gone to Orochimaru of his own free will, hoping that Orochimaru would cure him from his rages. He was later recruited as a member of Sasuke Uchiha's group Taka, which was initially called "Hebi" at the time of its creation. While it is unknown if Jūgo ever received any formal shinobi training, he is still a very dangerous individual, enough to warrant the attention of other powerful ninja such as Orochimaru and Sasuke, with both of them searching Jūgo to join them at separate times. After adapting their DNA and abilities, Kabuto also indirectly praised Jūgo when noting the quality of Sasuke's former team. Jūgo is able to understand and communicate with animals, such as birds, and is able to request them to help him accomplish tasks, such as acting as scouts or gathering information they have already witnessed. These informations are shared in a great speed, allowing Jūgo to know about things that happened in a far away distance. He is physically very strong and through the abilities he inherited from his clan he can passively absorb natural energy and use it to transform his body and boost his physical and ninjutsu abilities.
Like other members of his clan, Jūgo possesses the ability known as Sage Transformation which allows him to use the natural energy he absorbs to transform his body or parts of his body at will to fit his situation. He can change what form he takes almost instantly and can isolate the transformation to specific parts of his body. Also due to this, Jūgo's possesses massive reserves of powerful chakra. However, because he absorbs natural energy constantly, he and his clansmen are prey to sporadic and involuntary surges of rage. Aside from his shape-shifting powers, Jūgo's physical abilities, such as his speed, strength and endurance are also enhanced in proportion to the level of the transformation. If he fully transforms, Jūgo gains a massive power boost but loses his mind to his murderous side, signified by a change in his voice. Because he is constantly passively gathering natural energy, he is very strong against Genjutsu, being resistant to illusions C-Rank and below.
- User needs to be S-Class Ninja and a member for at least 4 months
- Jugo bios cannot have EIG, Sage Mode or Cursed Marks.
- User cannot have a special bio in his second bio slot.
- User must have mastered at least 1 Elemental Ninjutsu Release as well as Taijutsu.