The greatest warrior of the species known as the Primordials who lived 12,000,000 years ago, he was one of the first to attune himself to combat when the great war against the Hollow began. Creatures from an unknown point in space, the Hollow were chaotic monstrosities who's massive ships were purposefully manipulating the gravity fields of stars and causing them to collapse for unknown reasons. Their numbers seemed unfathomable and before the Primordials began to attune themselves to warfare their empire seemed doomed. Pazuru created weapons and invented forms of combat to fight their enemies, leading his kind in a gargantuan counter assault against the Hollow fleets, destroying billions.
After decades of warfare the enemy fell back and seemed to leave the galaxy entirely, but by then Pazuru had changed completely, reforming his body and essence to that of a true weapon. He looked at his actions as a necessary sacrifice for his species, but when war had left them the Primordial leaders looked upon Pazuru as a monster, even more frightening than the creatures he had saved them from.
After being exiled from entering the newly constructed homeworld and falling into a deeper and darker hatred he was entombed in a sub dimensional prison thought to be inescapable. The loyal weapon cast away and forgotten once its necessity had passed.
Only after hundreds of thousands of years was he able to slowly force a manifestation of his consciousness back into the physical world.