BORN: Before 9,000,000 BCE
The Primordial was an ancient being discovered by ancient humans near the edge of the Milky Way galaxy during the Human-Forerunner Wars, circa 106,538 BCE. The Primordial was taken to the human world of Charum Hakkor, where it remained in stasis, with very limited contact with humanity. Though ancient humans were able to extract a small amount of information from the Primordial, they lost the war with the Forerunners and the Primordial was left in stasis on Charum Hakkor for centuries afterwards.
Thousands of years after the end of the Human-Forerunner War, but prior to the Forerunner-Flood War, the Forerunner Master Builder, tested a Halo at Charum Hakkor, releasing the Primordial from stasis. The Primordial proceeded to escape onto the Halo being tested, later known as Installation 07 or Zeta Halo, and corrupted the Forerunner ancilla on the ring, Mendicant Bias. Using the corrupted Mendicant Bias, the Primordial attacked the Forerunner capital Maethrillian, successfully firing a halo and killing everyone on the capital world.
Following the Attack on Maethrillian, the Primordial and Mendicant Bias used Installation 07 to test the Flood infection on the humans living on the ring’s surface. Soon after, the IsoDidact, a copy of the original Ur-Didact, arrived and used a reverse stasis chamber to artificially age the Primordial and destroyed it. Later during the Forerunner-Flood War, however, it was discovered that the memories of the Primordial had been transferred to the Gravemind, and it had not been destroyed after all. The status of the Primordial is not known following the firing of the Halo Array by the Forerunners, though it is assumed that its consciousness remains so long as the Flood exists.