Halo is a multi-billion dollar video game franchise owned by Microsoft Studios, centering on an interstellar war between humanity and the Covenant, a theocratic alien alliance. Many of the games feature a cybernetically-enhanced human super-soldier, Master Chief John-117, and his AI companion, ...

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What are the Flood?

I know that the Flood are like the Precursors but what are they? Are they an animal or a synthetic war machine like the forerunner Promethean's?
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Why did the Gravemind not kill Master Chief as he was walking through High Charity in Halo 3?

I understand that people have argued that the Gravemind was waiting for Cortana's solution to the Flood to be revealed. But then the Gravemind doesn't kill Master Chief when he could have easily ...
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1answer
52 views

How did the Gravemind get to The Ark in Halo 3?

1) Cortana says that the Gravemind did not know about the portal to The Ark, or to where it led. How would the Gravemind even know where to go, assuming it could slipspace High Charity at least ...
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0answers
97 views

What did the Prophets hope to accomplish by activating the Halo array?

This question will be spoiling key plot points from the prequel novel Halo: Contact Harvest, as well as some story elements from the Halo video game trilogy. First, a little background. The premise ...
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483 views

In the Halo universe, what is Fletcher's Syndrome?

In the animated film Halo: Fall of Reach "Fletcher's Syndrome" is mentioned as a potential side-effect of the augmentation process. Is there any source or material that says what this syndrome is, ...
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1answer
93 views

Could an AI overcome its rampancy?

In the Halo video game series and associated novels, when an AI reaches the end of its service life, it typically becomes rampant. Rampancy appears to resemble dementia in the way it affects the AI ...
3
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1answer
231 views

Why are members of Fireteam Osiris different from previous spartans?

I have been playing some Halo 5, and noticed that the spartans of fireteam Osiris have normal names and normal eyes. I thought all spartans were taken during childhood and given codenames, like 117 ...
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1answer
119 views

How to know when to exit Slipspace?

We know that UNSC ships use particle accelerators to punch a hole through normal Space/Time to enter into Slipspace. However, how do the ships know when to exit Slipspace when approaching the ...
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1answer
456 views

Where are the other Spartans in the first Halo Trilogy?

In Halo CE, 2 and 3 (Also on ODST) we never got to see any other Spartan Soldiers, but later on Halo 4 and the clips from 5 we see a lot of them. Where are them on the first trilogy?
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1answer
124 views

Why did Truth try to activate the Halo array?

The Prophet of Truth is depicted as a highly religious individual. During Halo 2 he captured 343 Guilty Spark, who told him how to activate the Halo rings. But I have no doubt that Spark would also ...
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0answers
154 views

Are the Spartan-IVs depicted in the Halo 5 opening cinematic true to the previous lore?

In this intro cinematic to Halo 5 a team of 4 Spartan-IVs, part of Fireteam Osiris, are seen skydiving, jumping and running down a mountain and wiping out a bunch of ...
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0answers
112 views

All Halo Books List [closed]

As a fan of the Halo games and its lore I was thinking about getting all of the books or comics that are a part of the Halo lore. I was wondering if anyone had a full list of all the books related ...
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2answers
124 views

Who is in charge of the UNSC?

Who is in charge of the United Nations Space Command, in Halo? 'Lord Terrance Hood' or maybe president of the UEG seem like options to be Commander-in-chief, but I see no canon evidence to support ...
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1answer
154 views

Halo Reach Mystery Marines

In the final "level" of Halo: Reach, Lone Wolf, Noble Six is fighting, supposably in/around the breaking yards. Around him (/her) there are many dead marines. Now, where did they all come from? I get ...
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1answer
236 views

How fast can ships in Halo travel at sublight?

Specifically talking about the Spirit of Fire, but not restricted to that if there's other examples. Can they travel fast enough that time dilation would be noticeable, or would Serina's life be over ...
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2answers
18k views

Halo reading order: can I start with the Kilo-Five trilogy?

I have Halo: Glasslands which is a part of the Kilo-Five trilogy.I know that Glasslands is set after the events of Halo 3 and Halo: Ghosts of Onyx, but is not a direct sequel to Ghosts of Onyx. I ...
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1answer
489 views

How did Regret get the coordinates of Earth?

In the beginning of Halo 2, Regret invaded the Earth to grab a human (because only humans could activate Halo weapon array as per designs of Forerunner). In Halo: Combat Evolved, Covenant didn't know ...
3
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1answer
372 views

Why do Elites let Grunts sleep at their posts?

In the Halo novel "First Strike", there's a part from the perspective of a Grunt: If his masters learned he'd been asleep at his post, they might ... give him to the Jackals. Yet in the Halo games, ...
2
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1answer
258 views

Is the Gravemind “logic-virus” an actual virus?

In The forerunner saga of the Halo books, the Gravemind uses something described as a "logic-virus" to turn machines to his side. The Halo Nation wiki article describes this as "altering every ...
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1answer
4k views

What is the meaning behind “Pillar of Autumn”?

Bungie are well known for putting a lot of meaning into their games - from their complex ARGs to the use of the number 7 in names and numbers. I know that the Covenant battlecruiser Truth and ...
2
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0answers
252 views

Ancient-Humanity true purpose in the Human-Forerunner war

I just watched the Halo 4 terminals and one of them call my attention, I think the name is "Charum Hakkor" where the Lord of Admirals attacks a Forerunner planet because there was a flood infestation, ...
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5answers
7k views

Where's the arbiter and the allied Elites after Halo 3?

When Halo 3 ends, we can see a great alliance form by the UNSC and the Elites supporting the Arbiter. The next game after it, is Halo:ODST; I played a long time ago but I do recall that there was no ...
3
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1answer
207 views

Lucky Master Chief?

In the final mission of Halo 3 (Halo) the Chief prematurely fires Installation 04B, destroying the Halo, the Ark, etc. shouldn't he have died, though, immediately after firing the ring? How did he ...
3
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1answer
748 views

Which books influenced the game Halo?

I read this post about the Ringworld series, but am curious about the main influences. I just started reading the Forever War and am reminded a lot about Halo, also, I read once that Starship troopers ...
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2answers
283 views

Does the Halo universe have any aquatic vehicles?

I've played most of the games but not read the books or anything so I can't speak for those. I've noticed that the vehicle sets in the games seem to only include land and air. However, there are ...
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2answers
3k views

Master Chief John-117 real face?

In the Short TV series, Halo: Forward Unto Dawn, the end of last episode shows faces of two cybernetically enhanced soldiers but Master Chief John-117 is shown with his helmet. In the Halo Universe ...
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2answers
926 views

Why didn't the UNSC use Chemical and Biological Warfare on the Covenant?

I know that the UNSC had use nuclear weapons against the Covenant, but why not chemical or biological warfare, or both? They would've been extremely effective, because none of the aliens (presumably) ...
4
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1answer
228 views

In what three engagements were the Covenant defeated?

In the novel The Fall of Reach, Captain Keyes notes after the Battle of Sigma Octanus IV, that: There had been only three small engagements in which the UNSC fleet had decisively defeated the ...
3
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1answer
817 views

What happened to the other Forerunners?

MAJOR SPOILERS In the recent novel HALO: Silentium, it was revealed that Also, at the end of Silentium, the Librarian is on Earth, creating the Portal discovered in HALO 3, but Halo.wikia says: ...
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0answers
317 views

How was Cortana going to detonate In Amber Clad's reactor?

In the beginning of the High Charity level of Halo 2: Cortana: "That structure, at the center of the city... it's a Forerunner Ship! And Truth is heading straight for it! If he leads the ...
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3answers
4k views

Why isn't the Master Chief a Commissioned Officer?

In the Halo universe, the main character is John-117, commonly referred to as "the Master Chief", a non-commissioned officer even though he had a lifelong military education. Why hasn't he become a ...
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1answer
582 views

Why did 343 Guilty Spark help Miranda to stop Halo Delta?

The prime task of the Forerunner monitors was to ensure defense against the Flood. After a significant infection level, they were even willing to break the protocols (e.g. 343 Guilty Spark tried to ...
6
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2answers
1k views

How does a non-sentient life being do intelligent things?

The Flood is a non-sentient life form. That's why the Halo array is unable to kill it directly (the Flood is starved to death which is passive killing by Halo). What I see about the Flood in the ...
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2answers
5k views

How much did Larry Niven's Ringworld inspire the Halo game franchise?

I have heard that the First Person Shooter Halo game franchise was inspired by Larry Niven's Ringworld. How Ringworldie is it? Is there more to the connection between Niven's classic Ringworld and the ...
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2answers
344 views

What are the legal/ethical statuses of 'Smart' AIs in HALO?

After seeing this and this question, I wondered, what about so-called 'Smart' AIs in the HALO universe (i.e. Cortana, Kalmiya)? Do these AIs have 'rights'? Apparently Dr. Halsey broke numerous laws ...
3
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1answer
671 views

How does Halo's defense system destroy sentient life selectively?

Halo's defense system is designed to wipe out all sentient life in the galaxy. How does this work? It can't be like nuclear bomb, otherwise it'd also destroy non-sentient life (viz. the Flood). It ...
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3answers
7k views

In the Halo universe, what would be the effect of a MAC round hitting a planet?

In the Halo games and books, Human forces use a MAC (Magnetic Accelerator Cannon) to defend itself against enemy forces. They work on the principle of using magnetic fields to accelerate a large, ...
5
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2answers
373 views

How were the Flood captured?

If all sentient life (including humans) in the galaxy was intact, it means that Halo array was silent for long which means the Flood wasn't a threat to galaxy for long. Its only possible for alive ...
5
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1answer
305 views

When do we find out who Miranda Keyes' Mother is?

In the Halo universe, it is well know that Miranda is the daughter of Captain Jacob Keyes. In the recent Halo: Glasslands it is made obvious that her mother is: However, when was it mentioned ...
4
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1answer
447 views

Where does Master Chief find himself at the end of Halo 3?

At the end of the Halo 3 credits, the ship Master Chief escaped on seems to land across a planet. Is anything known about this planet, and whether or not this landing leads into Halo 4?
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3answers
2k views

In Halo Reach, why is the AI carried in a large canister?

As the identity of the AI I'm asking about is a major plot point in the game Halo: Reach and as I've just recently finished it, I've decided to keep the identity of the AI a secret using spoiler code ...
15
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3answers
2k views

In the Halo universe, why are Master Chief (and some others) called “Reclaimers”?

When 343 Guilty Spark and Master Chief met, 343 called Master Chief a "Reclaimer". The word is also used several times in the books. What does it mean? Did the Forerunners leave the artifacts all over ...
11
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1answer
339 views

Why the discrepancy in Halo's jet propulsion technologies, between e.g. a Sabre and the Pillar of Autumn

The Sabre goes into orbit through the use of a seven-stage rocket whose technology seems similar to standard tech existing today, while other crafts or vehicles such as the Pillar of Autumn or ...
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8answers
8k views

What explains the plot conflicts between Halo: Fall of Reach (book), and Halo Reach (game)?

I'm assuming that both of these works are canon, but there are a few plot conflicts that I'm having trouble resolving. Is there anything that explains these differences in plot? Does the game ...