Hiashi Hyūga

Being an identical twin, Hiashi is a mirror image of his brother Hizashi with the exception of an unmarked forehead. He has long, black hair (sometimes depicted as brown in the anime), and featureless white eyes like all members of his clan. He normally wears very traditional, loose fitting robes with a long-sleeved, brown haori. As part of the Allied Shinobi Forces, he donned the standard uniform of the Konoha shinobi, along with a black forehead protector (bandanna-style in the anime) of the Alliance. Years later, Hiashi began showing noticeable signs of aging. His hairline receded somewhat, and the colour dulled, even starting to grey strands, especially around his temples. He is also somewhat thinner, and has visible wrinkles especially around the corners of his mouth, around the eyes, and a prominent crease across his forehead.

Hiashi was born only seconds before his twin brother Hizashi, making Hiashi the head of the Hyūga clan and Hizashi a member of the branch house, whose only purpose in life would be to protect members of the main house. Years later, when Neji was born, Hizashi became bitter that his son would never be able to reach his full potential like a member of the main house, causing him to be openly resentful of Hiashi and his daughter. Hiashi was also responsible for branding the family's curse seal on Neji's forehead, further straining the relationship between the two brothers. One day during Hinata's training, overwhelmed with resentment and anger, Hizashi gave Hinata a murderous glare, Hiashi sensed the killing intent and activated the curse seal on his younger brother, causing him intense pain. He told Hizashi to leave as he would no longer tolerate incidents like this, telling him to never forget his duties. During a visit to Konoha by a Head Ninja of Kumogakure, who had come to the village to sign a peace treaty, a young Hinata was kidnapped. Hiashi however saved her, quickly killing her would-be kidnapper, only to discover that it was the Kumogakure ambassador. Kumogakure demanded Hiashi's head in return for the life he had taken, or risk resuming open warfare between the two villages. Konoha, wishing to avoid another conflict, was compelled to comply, but was not willing to fulfil Kumogakure's desire of getting to study the Byakugan. Their father suggested that Hizashi be used as a body double, since his cursed seal would seal off his Byakugan upon his death. Although Hiashi tried to find an alternative to this, Hizashi insisted, saying that he would finally get to choose his own fate (to make up for his wrongdoings against Hiashi), and save his brother's life. Before going to his death, he asked Hiashi to someday tell Neji about why he had made his decision. Originally, Hiashi had trained Hinata to become the successor of the Hyūga clan. However, Hinata's lack of confidence ultimately led him to decide she was not worthy. He instead turned his attention to his younger daughter, Hanabi.