Hizashi Hyūga

Hizashi was a mirror image of his brother Hiashi with the exception of having been branded with the Hyūga Main Family's Juinjutsu on his forehead. He had long, black hair and featureless, white eyes — the latter trait shared by all members of his clan. During his lifetime, he was seen wearing several outfits. While not on duty, he wore a long-sleeved, loose-fitting kimono held closed by an obi, which seemed the common attire of the clan. While on duty, he wore a simple black outfit with mesh armour underneath, his black forehead protector, and an obi around his waist. After he assumed his brother's identity, he donned a similar outfit to him consisting of a simple, white kimono, held closed by a dark-coloured sash along with a brown, long-sleeved haori. In the anime, as a character of Jiraiya's novel in Tsunade's Infinite Tsukuyomi dream, Hizashi donned an orange swirl mask and simple black kimono.

Hizashi was born mere seconds after his twin brother, Hiashi. For this reason only however, Hiashi was made the successor to the Hyūga clan, whereas Hizashi was made a member of a branch house. At some point in Hizashi's life, he was branded with the clan's curse seal that would ensure his lifelong service to the main branch and that would seal his Byakugan when he died. Hizashi was unhappy with this fate but felt that there was nothing he could do and put up with it. Hizashi eventually fathered a son: Neji. Several years after Neji's birth, Hiashi's daughter, Hinata, turned three. As was customary to do on the next heir's third birthday, Neji was given his own curse seal. Hizashi was upset that his son was being locked into the same fate that he was, and briefly put up with this as well. But as time went by, Neji's natural genius with the Hyūga clan's techniques became obvious to Hizashi. At the same time, Hinata was proving to be ill-suited as the Hyūga's next leader. Angry that Neji was being denied his full-potential because of his birth, Hizashi became more open with his disapproval of the main house, eventually manifesting as killing intent. Sensing this, Hiashi activated Hizashi's curse seal as punishment, causing Hizashi great pain and giving Neji reason to doubt the main house for the first time. Some time later, in an event that would become known as the Hyūga Affair, Hiashi killed the Head Ninja of Kumogakure to save Hinata. Kumogakure demanded Hiashi's body as restitution; in reality, they wanted to obtain the secrets of the Byakugan. The Hyūga elders and Konoha's leadership proposed that Hizashi be used instead; as Hiashi's body double. In addition to protecting Hiashi - the Hyūga's leader - doing so would keep the Byakugan's secrets from being discovered; Hizashi agreed. When Hiashi tried to protest, Hizashi immobilised him with a single blow. He then explained that he was not doing this to preserve the Hyūga's structure, but to save the life of his brother, to prevent war, and to choose his own fate for the first time in his life. Before going to his death, Hizashi asked Hiashi to tell Neji of his reason for his decision, regretting that he had only shown Neji his bitterness in life.