Because he wasn’t scary enough before.
The Flood, though? Oh yes.
Halo: Combat Evolved introduced the Flood as a plot twist partway through, and suddenly this wasn’t just a game about shooting aliens anymore. It got a lot creepier.
On the surface, the Flood is Halo’s version of zombies. Infected creatures twist and mutate into undead monstrosities. But as the series progressed and the lore expanded, they became more. They are not zombies.
The Flood is a Lovecraftian nightmare.
After the first game’s implications that the Flood became so dangerous the Forerunners had to wipe out the galaxy to stop it, Halo 2 introduced the Gravemind: an intelligent, sinister manipulator in control of the Flood hive mind. His cryptic verses and sinister presentation were damaged by his rather plant-like appearance, even if he was still intimidating, so the Master Chief Collection altered his design to more closely resemble his canonical description as a massive conglomeration of corpses. Thanks for that, 343.
Meanwhile, the first game’s Anniversary Edition (also present in the MCC) incorporated the best parts of the first game’s novelization to demonstrate what even a Proto-Gravemind can do.
It gets worse. The Flood can infect AI.
This is demonstrated most notably in the corruption of Mendicant Bias and the Gravemind’s interrogation of Cortana, but the Forerunners considered it a plague. Infected AI could spread it to others.
To go back to the zombie comparison, imagine if the zombies created a computer virus that made your electronics do what they wanted. And since the Flood are intelligent, suddenly you have Gravemind messages appearing on your phone, with all his usual psychological torment and manipulation.
It gets worse.
The Flood we saw in the original Halo trilogy was comparatively weak to what it was in the Forerunners’ time. Graveminds are only the second-highest known form of the Flood. If they spread enough, the Flood form Key Minds, essentially Graveminds on a planetary scale.
Remember, they’re telepathic and/or a hive mind. Key Minds controlled military strategy. They coordinated ship attacks. Fleets of Flood-infected ships surrounded Forerunners and invaded their systems! These are far from mere zombies.
And it gets worse.
The Forerunner Saga was epic, especially the third book, Silentium. And while it tells the story of the Forerunners’ final days, the Didact and the Librarian, and even 343 Guilty Spark, it’s really about the origin of the Flood.
These three books toy with the reader as they slowly uncover parts of the truth.
First, they reveal that the Forerunners destroyed their creators, the Precursors.
Then, they explain how humanity found an ancient powder that caused disease and mutations… with the strong implication that the Precursors developed the Flood as a biological weapon.
Then Silentium brings it all together and reveals the terrible truth:
Some adopted new strategies for survival; they went dormant. Others became dust that could regenerate our past forms; time rendered this dust defective. It brought only disease and misery; but that was good, we saw the misery and found it good.”
Yes, in a failed attempt to protect themselves from the Forerunners’ genocide, the Precursors turned themselves into the Flood.
I’m pretty sure it’s no coincidence the wording of that chapter echoes the Book of Genesis. The Precursors are essentially gods. They created the Forerunners and countless other species, and when they decided to pass the Mantle (in general terms, responsibility for all life) to humanity instead, the Forerunners opposed them.
We are the last of those who gave you breath and form, millions of years ago.
We are the last of those your kind defied and ruthlessly destroyed.
We are the last Precursors.
And now, we are legion.
Forerunner technology is far beyond what humans the Covenant are capable of, but Precursor technology borders on incomprehensible even to the Forerunners. For example, Silentium shows us the Star Roads, roads the Precursors used to bridge planets and possibly move stars. The Flood weaponizes the Star Roads and uses them to surround enemies, crush planets, and prevent slipspace travel.
All Precursor technology operates on the principle of “neural physics,” which believes the universe itself is a living organism beyond our limited understanding of life.
That’s pretty cool, until you remember what the Flood does. The Didact suggests the Flood is capable of infecting the universe itself. Whether or not that’s true, it’s at least implied they can manipulate space and time with tech like the Star Roads.
As for the Didact, a good part of his Halo 4 insanity came from a “conversation” with the Gravemind. (The other part came from being locked in silence for millennia, because while he should have been in contact with the Domain, the firing of the Halos destroyed the Domain because it was secretly a Precursor construct.)
That all sounds Lovecraftian, but there’s one big difference from the sorts of horrors H.P. Lovecraft wrote about. Lovecraft’s cosmic horrors often aren’t actively malicious. We’re just like bugs to them. Insignificant. They’ll destroy us and drive us mad, but not because they hate us.
The fallen Precursors, on the other hand, have a single hate-filled goal: that “all creation will tailor to failure and pain, that never again shall the offspring of the eternal Fount rise up against their creators” (175).
So, what sort of enemy do we have in the Flood?
Twisted gods whose only goal is pain and destruction and revenge, who share a collective consciousness and collective memory, who have the power to subvert human and machine alike and possess technology beyond our understanding.
Yikes.
I believe the Flood will return, if not in Halo 5 then in a future game. When they do, we might finally see them at their full strength.
And that will be terrifying.
