High Quality Content by WIKIPEDIA articles! Forerunners is the translated name for an ancient race of sentient beings which ceased to exist 100,000 years before the events of the Halo video game series began. They are known for their advanced technologies, enabling them to build mega-structures like the Halo installations, The Ark and the Shield Worlds. All that is known about the Forerunners was learned from the various artifacts of their creation, found on the planets Reach, Earth, Sigma Octanus IV, Harvest, Arcadia, Sanghelios, Kholo, and Janjur Qom. They were the preceded by another extinct race known as Precursors. While they took the responsibility of preserving every life form in the galaxy, they were ultimately threatened by the parasitic Flood. Through the use of the Halo weapons array, they were able to all but defeat the Flood, seemingly at the cost of their own existence and much of the life in the ancient Milky Way galaxy.