
343 always thought he was smarter and more responsible than humans. A wild idea, but consider what monitors are: very advanced AIs. A teaser for Halo 6, or a future Halo 5.X update, extra campaign.Ģ) my more speculative answer is that we are witnessing Cortana arriving at the ring, but the humming is a huge clue that the projection we have been watching is either not Cortan but 343 masquerading as Cortana or in some fashion similar to the Gravemind mind games, 343 has succeeded in corrupting Cortana. This leads me to one simple conclusion, but also a second more speculative answer:ġ) the humming we hear is indeed 343 Guilty Spark, he has found a Halo installation (possibly where the Librarian is hidden) and he is happily settling in and reactivating it. Halo: Primordium ends with a revived 343 Guilty Spark having come to the conclusion that the Librarian is still alive in 2557, so it takes over the USNC Rubicon, puts the crew to sleep, and disappears with the ship.

To understand the ending Halo 5 Guardians requires including not only the stories and characters from previous games, but also Greg Bear's Forerunner Saga trilogy. But most likely its just paralleling the first Halo. I also have a small theory which I'm sure is extremely not true but does make you wonder: Maybe the Monitor from the first Halo actually gained control of Cortana, and that's why she's humming the same song when you see the Halo ring at the end. And it looks like she plans to cleanse the universe of all humanity and start fresh. Only this time instead of the Flood being the problem trying to consume the universe she believes humanity is. And the fact that she said she would wake the Chief in 10,000 years, can only mean Cortana is now recreating exactly what happened the first time around. And of course Lasky's scene does parallel the first Halo.įrom what I gather with everything Cortana said and how she talks. At the end when you see the new Halo ring you hear Cortana humming the same thing the Monitor from the first Halo hums when floating around. So the ships dropped the DNA on their respective planets and civilizations evolved all over again. Hence why in Halo 4 the Knights actually had human remnants in them from a human civilization from before.

And once the Halos were activated they wiped out everything including the Forerunners.

So they collected the DNA of every species and put them in the same ships we see the Master Chief on at the end of Halo 2. But the Forerunners had to cleanse the universe of the Flood in order to be able to save it. Humans had developed technology similar to what they have now in the Halo universe. Only the humans were somewhat locked in battle with the Forerunners against the Flood. If you remember the story the consoles tell in Halo 4, they show that the universe was once populated with both humans, Forerunners, and other species the same.
