Many years ago, a race known as the Precursors assumed the Mantle of Responsibility - the guardianship of life in the galaxy. The Precursors chose an ancient form of humanity as their successors, over a race known as the Forerunners. In retaliation, the Forerunners drove the Precursors into extinction. Instead of fighting back, the Precursors let themselves die, with some turning into dust intended to spread and later transform into themselves once again. This dust eventually became defective, infecting and contorting organisms into a new parasitic species, connected by a hivemind to the minds of the last Precursors: the Flood. The Forerunners sent the humans to Earth, reverting them to a primitive civilization based in Africa, and fought the Flood, which spread through an infestation of sentient life and overran much of the Milky Way Galaxy. Exhausting all other strategies, the Forerunners conceived the Halo Array — ring-shaped megastructures and weapons of last resort that would destroy all sentient life in the galaxy to stop the Flood. A civil war began between the Forerunners' commander, known as the Ur-Didact, who wanted to, who created the Ark.* In the 22nd century, two superpowers had mastered Element-based technology (referred to as Tek) - the United Republic of Earth (URE) and the Terran Federation * you are a male Gun soldier and your name Is 3000 ol gamma or tech sarg for short and you have a pet trex who you ride on to stop evil* alongside your crew but when your past haunts you forever theres nothing you can do it about it*