Precursors

The Precursors are an ancient alien race from the Halo Universe. They are said to have traveled millions of galaxies, seeding them with life. Much of their technology is based on neural physics, a precursor philosophy that said the entire universe was living, but in a way that was beyond the comprehension of biological organisms. This made their structures nearly indestructible. They are said to be trans-sentient beings, having the ability to travel among galaxies and accelerate the evolution of intelligent life.

When they arrived in the Milky Way to create life again, they chose humanity for the Mantle, not the Forerunner race. The Forerunners were angry about this and tried to kill the Precursors. The Forerunners were driven out of the Milky Way, but swore to take revenge. They created The Flood to kill all life in the galaxy. The Precursors are highly advanced and are the only Tier 0 race on the Halo Tier scale or at least 4.2 civilization on the Kardashev scale.

See also

Precursors