Dark Knight Clan (Bloodline of Darkness)

A Demon Clan that Sparda once became the greatest Demon Knight of his time, his brother however became the Head of the Family and gained power beyond any normal Demon's imagination, usually the Head of the Clan's main Family's successor do not have the Platinum hair but instead different colour hair.

First War with the Human World
Sparda originally fought his brother for the right to descide the fate of the Human World, Sparda defeated his brother and aged father whom after losing his wife no longer had a reason to cease his ageing, later he fought his brother once again however their father extraced his soul hence destroying his personality in the process before sending his spiritual essence into his eldest son's body causing Seth to be reborn as the Head of the Family causing the defeat of Sparda shortly afterwards.

Seth continued to defeat Sparta time and again through gaining the power of Darkness, the power that all demons born their power from and their own physical forms, Sparta had no choice but to seal off the Demon World as a means of stopping Seth from destroying the Human World. However the Clan still managed to enter into the Human World in small amounts allowing the Birth of Nero, through the relationship between Nero's father and a Earth Spirit of impressive power, causing an imbalance in the barrier between the Clan's part of the Demon World and the Human World.