An ancient race that built the Halo rings and the Ark in order to starve the flood. It is revealed by 343 Guilty Spark that humans are descendants of the Forerunners.
In a sense yes Halo is related. The planet you are on is called Marathon which was the home of the forerunners who built the HALO rings. The UNSC goes there after The Human Covenant War to investigate the motives behind the old Covenant's suicidal beliefs. As well as th fact being the enemies in Marathon look possibly like primitive versions of the all consuming Flood parasite that forced the Forerunners into extinction.
Halo can't die. It is an custom made ring-planet built by the forerunners. So it can only break apart like the way it did in the end of Halo: Combat Evolved.
The Forerunners are an ancient race that made 343 Guilty Spark, Halo and the flood. When the flood started to reproduce dramatically in years before even Halo Wars (2531), the forerunners made mechanical things and oracles like Guilty Spark, and then killed everything on the planet, including themselves and the flood. All that's left of them are a few of their buildings, oracles and sentries, which try to kill you in halos 1-3.
Random journal entrys from the forerunners
The forerunners built it even before our time and before the covenant.
A halo ring is a giant weapon designed by the forerunners to destroy all of the galaxy or in other words a big nuke.
Halo the game: 2003. Halo the ring: the time of the "Forerunners". HALO:CE( THE FIRST HALO GAME), ACTUALLY CAME OUT NOVEMBER 15, 2001. 2003 IS WHEN IT FIRST CAME OUT ON PC.
yes you can look like carter in halo reach.
i don't no but lol me to What does a halo haircut look like? bye
Halo 4, master chief lands on a forerunner planet. which awakens a new breed of enemy derived from the forerunners called, "Promethean"
When the forerunners built the Halo's, they built them with awesome powers. As the history of the halo go's, there are only eighteen in existence. After all the forerunners vanished, the halo's were lost in space, until over a thousand years later. The covenant found 1 ring and found the powers of it. They set a devoted there lives to finding all of them and activating them to have the galaxy all to them.