Francisco Nightingale ( Stardeath )

Francisco Nightingale ( Stardeath ) is the main antagonist of the novels and the self-proclaimed leader of the Dark Guardians and is also the adoptive father of the late tritagonist ( Rookie ) and a veteran of the Great Galactic Surge.

He and his sister Ashley Nightingale created a gigantic citadel which would serve as the headquarters of the evil organisation and the seemingly indestructible fortress.

He also wears a large metal mask to protect his face which is covered in deep cuts and lacerations after he was bested and maimed by Jeff Maxwell.