Hizashi was a mirror image of his brother Hiashi with the exception of having been branded with the Hyūga Main Family Juinjutsu on his forehead. He had long, black hair and featureless, white eyes — the latter trait shared by all members of his clan. He wore a simple black outfit with mesh armour underneath, his black forehead protector, and an obi around his waist.
According to Guy, thirteen years ago there was nearly a war between Konohagakure and Kumogakure over the Konoha's Hyūga clan and their Byakugan. However Hizashi sacrificed himself to stop the war protecting both his clans and the two villages, resulting his death.
- Hizashi's name means 'sunlight', or 'rays of the sun'.