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{{Era|TF|H1|H2|H3}}
{{Status|Canon}}
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{{disambig header|the Forerunner artifact|the campaign level|Sacred Icon}}
{{Forerunner infobox
|image= [[File:H2-ActivationIndex.png|200px|The Activation Index of [[Installation 05]].]]
|role=
|length= {{Convert|30.2|cm|in|sp=us}}{{Ref/Reuse|library}}
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{{Quote|We must collect the Index before we can activate the installation.|[[343 Guilty Spark]]}}
The '''Activation Index''', often simply referred to as the '''Index''' and known as the '''Sacred Icon''' by the [[Covenant]], is an object found in every [[Halo Array|Halo installation]]'s [[Library]]. The Activation Index is the key needed to operate the installation's most critical systems, the most notable of which is its main weapon, an energy pulse that will kill all [[Sentience|sentient]] life within the ring's effective range. Its secondary purpose is to simultaneously initiate the [[Conservation Measure]], the repopulation process of the worlds sterilized by the Halo's pulse.<ref name="library">'''Halo: Combat Evolved Anniversary''' - ''[[Library (feature)|Library]]'', ''"Activation Index"''</ref>{{Ref/Site|URL=https://www.halowaypoint.com/news/the-new-halo-encyclopedia-is-out-today|Site=Halo Waypoint|Page=The New Halo Encyclopedia is Out Today|D=11|M=03|Y=2023}} An Index cannot be used to activate any Halo besides the one to which it is assigned.<ref name="h3h">'''Halo 3''', campaign level ''[[Halo (Halo 3 level)|Halo]]''</ref>


<center>''Looking for the level, [[Sacred Icon (Level)|Sacred Icon]]?''</center>
==Overview==
[[File:CortanaIndex-large.jpg|thumb|250px|left|[[Cortana]] producing a [[Holography|hologram]] of [[Installation 04]]'s activation index from her memory banks.]]
The Index is vaguely T-shaped, with a faint green or blue glow emanating from a stripe on each side. The object seems to be merely a digital storage device containing the software or access codes needed to activate the rings, as shown when Cortana extracted the Index's data and stored it within her memory, and when she activated the [[Installation 08|second Installation 04]] with the stored Index.<ref name="twobetrayers">'''Halo: Combat Evolved''', campaign level ''[[Two Betrayals]]''</ref>{{Ref/Reuse|h3h}} Each Index is stored safely within an [[Index chamber]], a large room that is located at the core of every [[Library]] on each Halo installation and guarded by waves of [[Sentinel]]s.<ref name="h1l">'''Halo: Combat Evolved''', campaign level ''[[The Library]]''</ref><ref name="quarantine">'''Halo 2''', campaign level ''[[Quarantine Zone]]''</ref>


The '''Activation Index''', '''The Key''' or '''Sacred Icon''' as the [[Covenant]] call it, is an object found in every [[Halo]]'s [[Library]]. It is the key needed to activate the [[Installation]], causing a reaction that will purge the galaxy of all sentient life. When inserted into [[The Core]] of the [[Halo]], the Index activates the [[Halo]]'s main [[weapon]]. It is confirmed that an Index cannot be used to activate any Halo besides the one it is found on.<ref>[[Halo (Halo 3 Level)]]</ref> The reason [[Alpha Halo]]'s Index worked on the replacement was because they were both [[Installation 04]].
According to [[containment protocol]]s followed by the [[monitor]]s of each Installation, only a [[Reclaimer]] is allowed to retrieve the Index from the Library. Immediately after this, however, the Index will be taken by the monitor for safekeeping to ensure it does not fall in the hands of the Flood in the event the Reclaimer is infected.{{Ref/Reuse|h1l}} Once safely in the installation's [[Control Room]], however, the monitor must hand the Index over to the Reclaimer, as monitors are not allowed to activate their Installations by themselves.{{Ref/Reuse|twobetrayers}}


The Index is the key to [[Halo]]'s main weapon. It is needed to start the activation of [[Halo]]'s final weapon sequence. [[Spartan-117]] noted in his debriefing of the [[Halo]] incident that, if not for [[Cortana]]'s intervention, he would have accidentally activated the weapon and destroyed all life in the galaxy. [[Halo]]’s main weapon exists primarily in case the [[Flood]] manage to escape containment and spread their infection to other planets, and has been activated once already.
When inserted into [[the Core]] inside a Halo's Control Room, the Index immediately initiates the charging sequence of the ring's main weapon. The activation process may be aborted by physically removing the Index before the firing; however, doing so sends out a signal which places the entire Array into standby mode, ready for activation from [[Installation 00|the Ark]].<ref name="the great journey">'''Halo 2''', campaign level ''[[The Great Journey]]''</ref> An AI construct inside the Core is able to prevent the initiation of the ring's firing sequence even if the Index is inserted, as demonstrated when Cortana prevented [[John-117]] from activating Installation 04. While inside the Core, Cortana also had complete control over the Index itself, as she was able to remove the Index's data and store it within her system.{{Ref/Reuse|twobetrayers}}


== Summary ==
However, it is also possible to insert the Index into the Core without triggering the ring's main weapon and instead use the authorization provided by the Index to manage the Halo's custodial systems.<ref name="he10">'''Halo: Escalation''', ''[[Halo: Escalation Issue 10|Issue #10]]''</ref>


The purpose of the [[Halo]] Rings is to destroy the Galaxy of all life so that [[the Flood]] could starve to death. The Index is vaguely ''''T''''-shaped, with a faint green glow emanating from a stripe on each side. (In Halo 2 the index not only glows green, but it also glows a blue color.) The object seems to be merely a digital storage device containing the software or access codes needed to activate the rings, as shown when [[Cortana]] activates the replacement for [[Installation 04]] with the Index stored in her memory. The "Sacred Icon" is first seen in [[Halo: Combat Evolved]] where, with the help of [[343 Guilty Spark (Monitor)|343 Guilty Spark]], [[SPARTAN-117]] locates and attempts to activate Halo, but he is stopped just before turning the key by Cortana. Cortana then begins to argue with 343 Guilty Spark over the Index. After [[John-117]] broke up their argument, [[Cortana]], explained to him the true function of Halo.
John-117 noted in his debriefing of the [[Battle of Installation 04|Halo event]] that, if not for Cortana's intervention, he would have accidentally activated the weapon and destroyed all life in the galaxy. Halo's main weapon exists primarily in case the [[Flood]] manage to escape containment and spread their infection to other planets. Only one firing of the rings occurred, at the close of the [[Forerunner-Flood war]]. Immediately following the activation, the secondary purpose of the Index also came into play, triggering the re-seeding of life on the worlds whose sentient species were indexed in the records of each Installation's Library in addition to the archives on the Ark.{{Ref/Reuse|library}}


The Index appears again in [[Halo 2]], although it is for [[Installation 05]], when it is taken by [[Commander]] [[Miranda Keyes]], but she and [[Sergeant Johnson]] lose it to [[Tartarus]] and his [[Brutes]] when they are ambushed. [[Tartarus]] then takes Keyes to [[Delta Halo]]'s Control Room where he tries to force her to activate the ring, but fails and activates it himself (by forcing Miranda's hand) when the [[Arbiter (character)|Arbiter]] and [[Johnson]] arrive. The Index is finally reclaimed by Miranda Keyes, who snatches it from the main platform after the Arbiter, kills the [[Tartarus|Brute Chieftain]].
==History==
===Installation 04===
[[File:HCE-RetrievingActivationIndex-screen2.png|thumb|250px|John-117 about to take the index in Alpha Halo's Library.]]
The activation index of [[Installation 04]] was retrieved by [[John-117]] at the guidance of [[monitor]] [[343 Guilty Spark]] in accordance with the proper [[containment protocol]]s after the [[Flood]] was released during the [[Battle of Installation 04]] on [[2552#September|September 21, 2552]]. Following protocol to the letter, the monitor led the Spartan through the [[Library]] until every security barrier protecting the index could be lifted. Upon reaching the facility's top floor, the Master Chief descended on the [[Index Chamber]]'s central [[elevator]] back to the bottom, where the index lay suspended over the main chasm.{{Ref/Reuse|h1l}} John obtained the index from its storage casket but Guilty Spark immediately took custody of the artifact in accordance with protocol. After the two [[Slipspace translocation|teleported]] to the [[Control Room (Installation 04)|control room]], the monitor relinquished the index back to the [[Reclaimer]] as only he was allowed to reunify the index with [[the Core]]. The Master Chief inserted the index to the Core, but [[Cortana]] immediately prevented the installation's activation, having been informed of Halo's true purpose.{{Ref/Reuse|twobetrayers}} Cortana downloaded the index's data into her systems and it remained in her possession over the coming months. On [[2552#December|December 11, 2552]], Cortana used the digital index to activate [[Installation 08|Installation 04's replacement]] constructed by [[Installation 00|the Ark]].{{Ref/Reuse|h3h}}


The Index of [[Installation 04]] was last known to be in the possession of [[Cortana]], while the Index of [[Installation 05]] was last known to be in the possession of [[Commander Miranda Keyes]].
Cortana still possessed at least fragments of the index by the time of her destruction. In [[2560#May|May 2560]], [[the Weapon]] noted that the framework that she had used to lock down Cortana contained these fragments and, in order to keep them out of the hands of the [[Banished]], the Master Chief allowed her to absorb the framework and the index fragments into herself.{{Ref/Level|Hi|[[Foundation]]}}{{Ref/Note|It is unclear at this moment whether Cortana obtained the Index from Zeta Halo or retained a copy or fragments of the Index from [[Installation 04]]. However taking into account that the Weapon utilised the Index in the framework to trap Cortana, it is possible that fragments of the Alpha Halo Index were retained.}}


It is called "The Key" by [[Gravemind]] in his lecture of the Chief and the Arbiter: "There is still time to stop the Key from turning", although with his manner of speech, it is not clear whether he was directly referring to the Index as "the Key", or just using a metaphor.
===Installation 05===
[[File:H2A-Miranda.jpg|thumb|left|250px|Commander Miranda Keyes reaches out to retrieve the index from its secure casing.]]
During the [[Battle of Installation 05]], [[Installation 05]]'s activation index quickly became a coveted prize to the [[UNSC]] and [[Covenant]] forces clashing on the ringworld. The Covenant sought to acquire the index to initiate their "[[Great Journey]]" by firing the installation while the UNSC forces operating from the {{UNSCShip|In Amber Clad}} attempted to gain possession of the index to prevent galactic genocide. Both groups racing to the Library, the UNSC reached the Halo's damaged Index Chamber first and [[Miranda Keyes|Commander Miranda Keyes]] successfully obtained the index from its container hovering over the Library's central pit. However, Keyes and her escorts were attacked by [[Arbiter]] [[Thel 'Vadam]]ee, who was then quickly betrayed by [[Tartarus]] at the [[Prophet of Truth]]'s behest.{{Ref/Reuse|quarantine}} Tartarus took the index to the [[Hierarchs]] who then enthusiastically announced the recovery of the "Sacred Icon" to the rest of the Covenant amidst the burgeoning [[Great Schism]]. Truth entrusted Tartarus with the index once again as he departed for [[Earth]] to journey to the Ark, with Tartarus slated to activate Installation 05. In the [[Control Room (Installation 05)|control room]], however, the [[Chieftain of the Jiralhanae|Jiralhanae Chieftain]] was confronted by the Arbiter and his newfound human ally, [[Avery Johnson|Sergeant Major Johnson]]. Despite being informed of the truth about the Halos, Tartarus forced the captive Commander Keyes to insert the index into the Core, initiating the ring's activation sequence. However, 'Vadamee managed to kill Tartarus before the ring could fire and Keyes rushed to remove the index from the energy stream in the control room's center, halting the installation's firing sequence but priming the rest of the Array for remote activation from the Ark.{{Ref/Reuse|the great journey}} The current status of the Index following these events remain unknown.<ref name="HOSFM84">''[[Halo: Official Spartan Field Manual]]'', ''page 99''</ref>
{{Clear}}


== Other Purposes ==
===Installation 03===
[[File:Escalation - Chief index.jpg|thumb|250px|In a plan to stop the [[Ur-Didact]], John-117 connects Gamma Halo's Index to the [[Control Room (Installation 03)|control room's]] [[The Core|core]].]]
ONI pioneer teams retrieved [[Installation 03]]'s activation index weeks after the UNSC discovered the ring.<ref>[https://www.halowaypoint.com/en-us/universe/locations/gamma-halo '''Halo Waypoint''': ''Gamma Halo'']</ref> It was stored in a laboratory aboard the orbiting [[Ivanoff Station]] by [[2557#July|July 2557]].<ref>'''Halo 4''', campaign level ''[[Composer (level)|Composer]]''</ref> The index came into the [[Ur-Didact]]'s possession after he returned to Gamma Halo following his defeat in the [[New Phoenix Incident]]. The index fell from the Didact's hands when he was incapacitated and translocated away by [[859 Static Carillon]] and was subsequently obtained by John-117, who took it to the [[Control Room (Installation 03)|installation's control room]] not to fire the ring, but to disable the Halo's safety protocols. This allowed Static Carillon to detach the entire plate section of the Halo housing the control room and plunge it on the [[Composer's Forge]] in order to vanquish the Didact.{{Ref/Reuse|he10}} Following Carillon's relocation of the installation elsewhere, the Index was apparently recovered from the Forge, and eventually secured by ONI at an undisclosed location.<ref name="HOSFM84">''[[Halo: Official Spartan Field Manual]]'', ''page 99''</ref><ref name="HE10">'''Halo: Escalation''', ''[[Halo: Escalation Issue 10|Issue #10]]''</ref>
{{Clear}}


The Terminals scattered within [[Halo 3]]'s campaign levels entail that the Index may, apart from activating the Halos', be a record or copy of the life-forms that existed at the time of the Halos' first activation. The Librarian states that she is in the process of Indexing all life forms, and that she is close to "saving them all".  This could be taken as meaning the Index contains of copy of all sentient life forms' DNA, which would, in a sense, save the individual by preserving them beyond their death. This could also explain why an Index takes time to fabricate: the DNA of all sentient life-forms may need to be re-collected for a new Index to be made, which would take much time. However, it would likely take a fraction of the original indexing time as the location of all sentient life is already known, making collection of samples rapid and efficient.
==Trivia==
 
*The Index of Installation 04 was considered a Class 9B asset by the UNSC. Cortana's failure to disclose her possession of the index constituted a severe violation of Article 2477-6 of the [[UNSC Charter for Xenoarcheological Artifact Recovery and Quarantine]].<ref name="DD">'''[[Halo Legendary Crate]]''', ''[[Halo Legendary Crate/Data Drops|Data Drop #9]]''</ref>
It could also be speculated that the Index must therefore be used to correctly fire the Halos' as it contains a record of all the species which Halo must target. The Monitors state that the Flood can only be stopped by starving them of sentient hosts; the Index, with its compilation of all sentient life in the galaxy, could instruct Halo to target them in the event of activation.
*The Index resembles common depictions of [[Wikipedia:Mjölnir|Mjölnir]], the hammer of the god [[Wikipedia:Thor|Thor]] in Norse mythology and the namesake of the [[MJOLNIR Powered Assault Armor]].
 
*In the beginning cutscene of the [[campaign]] level ''[[The Library]]'', the container holding the Activation Index unlocks, revealing it for two seconds before the animation by what is seen appears to have restarted since the Index seems to disappear as if the container was never even opened. This might have been caused by a scripting error.
*The Index could also be used for telling the Installations who not to fire on. But if the Installation was fired without the Index, it could ether kill every sentient species, or would cause several errors to form and then shut down some systems before rebooting. This could explain the survival of all of the sentient creatures on [[Earth]].
*On the level ''[[Composer (level)|Composer]]'' in ''Halo 4'', [[Installation 03]]'s Index can be seen within a display case in a [[Mgalekgolo|Hunter]]-occupied laboratory on ''[[Ivanoff Station]]''. The item is accompanied by a [[Halo 4 audio logs#Activation Index|short researcher log]].
 
== Trivia ==
*The Index looks very similar to a symbol of Norse mythology called "Thor's Hammer" the symbol is also called '''Mjolnir''' which is the same name of the armor a Spartan wears.
 
== Images ==


==Gallery==
<gallery>
<gallery>
Image:H2 Index.jpg|[[Miranda]] reaches for the Index, floating in its container in the [[Library]].
File:H3-ActivationIndex.png|The Activation Index of Installation 04 in [[Holography|holographic form]].
Image:Truth with Index.jpg|The [[Prophet of Truth]] displays the Index to the Covenant.
File:HCE-RetrievingActivationIndex-screen1.png|John-117 approaching the Index of Installation 04.
Image:The_Index_Chmbr.jpg|The Index from [[Halo: Combat Evolved]].
File:HCE-HoldingActivationIndex-screen.png|John-117 holding the Activation Index in his hand.
Image:Retrivetheindex.jpg|[[Master_Chief|Master Chief]] retrieving the index from its holding device. It is an interesting note that Master Chief is really standing on nothing, he's just in midair but the green aura around him may be a type of grav lift.
File:Chief Index.jpg|John-117 with Alpha Halo's Index in his hand.
File:H2_Miranda_Index.jpg|Miranda Keyes inspecting a hologram of an Index.
File:Miranda and the Index.png|Miranda Keyes reaches for the Index, in its floating container in the Installation 05's [[Library]].
File:Mercy Discussing Index.png|The [[Prophet of Mercy]] looking at a holographic projection of the Index.
File:Truth with Index.jpg|The Prophet of Truth displays the Index to the Covenant.
File:H3-Index and Cortana.jpg|Cortana presenting the Index in holographic form.
File:H2ATruth2.png|The Prophet of Truth announces the Index's retrieval to the Covenant in ''Halo 2: Anniversary''.
File:H4-ActivationIndex-Closeup-Screen.jpg|The Activation Index of Installation 03 aboard [[Ivanoff Station]].
File:H2A - Index - concept art.jpg|Concept art of the index in ''Halo 2: Anniversary''.
File:HINF Weapon Fragment.png|Framework also containing fragments of the Activation Index.
</gallery>
</gallery>


== Sources ==
==List of appearances==
 
*''[[Halo: Combat Evolved]]'' {{1st}}
<references/>
*''[[Halo: The Flood]]''
*''[[Halo 2]]''
*''[[Halo 3]]''
*''[[Halo: Evolutions - Essential Tales of the Halo Universe]]''
**''[[Human Weakness]]''
*''[[Halo: Combat Evolved Anniversary]]''
*''[[Halo 4]]''
*''[[Halo: Silentium]]'' {{Mo}}
*''[[Halo: Escalation]]''
*''[[Halo: Broken Circle]]'' {{Mo}}
*''[[Halo 2: Anniversary]]''
*''[[Halo: Hunters in the Dark]]'' {{Mo}}
*''[[Halo: Last Light]]'' {{Mo}}
*''[[Halo: Official Spartan Field Manual]]''
*''[[Halo: Outpost Discovery]]''
*''[[Halo Infinite]]'' {{Mo}}


== Related Links ==
==Notes==
{{Ref/Notes}}


*[[Library]]
==Sources==
*[[Halo]]
{{Ref/Sources}}


{{Forerunner2}}
{{Forerunner|artifacts}}


[[Category:The Forerunner]]
[[Category:Forerunner artifacts]]
[[Category:Technology]]
[[Category:Forerunner technology]]
[[Category:Halo 3]]

Latest revision as of 16:26, May 5, 2023

This article is about the Forerunner artifact. For the campaign level, see Sacred Icon.
Activation index
The Activation Index of Installation 05.
Overview

Length:

30.2 centimeters (11.9 in)[1]

 

"We must collect the Index before we can activate the installation."
— 343 Guilty Spark

The Activation Index, often simply referred to as the Index and known as the Sacred Icon by the Covenant, is an object found in every Halo installation's Library. The Activation Index is the key needed to operate the installation's most critical systems, the most notable of which is its main weapon, an energy pulse that will kill all sentient life within the ring's effective range. Its secondary purpose is to simultaneously initiate the Conservation Measure, the repopulation process of the worlds sterilized by the Halo's pulse.[1][2] An Index cannot be used to activate any Halo besides the one to which it is assigned.[3]

Overview[edit]

Cortana producing a hologram of Installation 04's activation index from her memory banks.

The Index is vaguely T-shaped, with a faint green or blue glow emanating from a stripe on each side. The object seems to be merely a digital storage device containing the software or access codes needed to activate the rings, as shown when Cortana extracted the Index's data and stored it within her memory, and when she activated the second Installation 04 with the stored Index.[4][3] Each Index is stored safely within an Index chamber, a large room that is located at the core of every Library on each Halo installation and guarded by waves of Sentinels.[5][6]

According to containment protocols followed by the monitors of each Installation, only a Reclaimer is allowed to retrieve the Index from the Library. Immediately after this, however, the Index will be taken by the monitor for safekeeping to ensure it does not fall in the hands of the Flood in the event the Reclaimer is infected.[5] Once safely in the installation's Control Room, however, the monitor must hand the Index over to the Reclaimer, as monitors are not allowed to activate their Installations by themselves.[4]

When inserted into the Core inside a Halo's Control Room, the Index immediately initiates the charging sequence of the ring's main weapon. The activation process may be aborted by physically removing the Index before the firing; however, doing so sends out a signal which places the entire Array into standby mode, ready for activation from the Ark.[7] An AI construct inside the Core is able to prevent the initiation of the ring's firing sequence even if the Index is inserted, as demonstrated when Cortana prevented John-117 from activating Installation 04. While inside the Core, Cortana also had complete control over the Index itself, as she was able to remove the Index's data and store it within her system.[4]

However, it is also possible to insert the Index into the Core without triggering the ring's main weapon and instead use the authorization provided by the Index to manage the Halo's custodial systems.[8]

John-117 noted in his debriefing of the Halo event that, if not for Cortana's intervention, he would have accidentally activated the weapon and destroyed all life in the galaxy. Halo's main weapon exists primarily in case the Flood manage to escape containment and spread their infection to other planets. Only one firing of the rings occurred, at the close of the Forerunner-Flood war. Immediately following the activation, the secondary purpose of the Index also came into play, triggering the re-seeding of life on the worlds whose sentient species were indexed in the records of each Installation's Library in addition to the archives on the Ark.[1]

History[edit]

Installation 04[edit]

John-117 about to take the index in Alpha Halo's Library.

The activation index of Installation 04 was retrieved by John-117 at the guidance of monitor 343 Guilty Spark in accordance with the proper containment protocols after the Flood was released during the Battle of Installation 04 on September 21, 2552. Following protocol to the letter, the monitor led the Spartan through the Library until every security barrier protecting the index could be lifted. Upon reaching the facility's top floor, the Master Chief descended on the Index Chamber's central elevator back to the bottom, where the index lay suspended over the main chasm.[5] John obtained the index from its storage casket but Guilty Spark immediately took custody of the artifact in accordance with protocol. After the two teleported to the control room, the monitor relinquished the index back to the Reclaimer as only he was allowed to reunify the index with the Core. The Master Chief inserted the index to the Core, but Cortana immediately prevented the installation's activation, having been informed of Halo's true purpose.[4] Cortana downloaded the index's data into her systems and it remained in her possession over the coming months. On December 11, 2552, Cortana used the digital index to activate Installation 04's replacement constructed by the Ark.[3]

Cortana still possessed at least fragments of the index by the time of her destruction. In May 2560, the Weapon noted that the framework that she had used to lock down Cortana contained these fragments and, in order to keep them out of the hands of the Banished, the Master Chief allowed her to absorb the framework and the index fragments into herself.[9][Note 1]

Installation 05[edit]

Commander Miranda Keyes reaches out to retrieve the index from its secure casing.

During the Battle of Installation 05, Installation 05's activation index quickly became a coveted prize to the UNSC and Covenant forces clashing on the ringworld. The Covenant sought to acquire the index to initiate their "Great Journey" by firing the installation while the UNSC forces operating from the UNSC In Amber Clad attempted to gain possession of the index to prevent galactic genocide. Both groups racing to the Library, the UNSC reached the Halo's damaged Index Chamber first and Commander Miranda Keyes successfully obtained the index from its container hovering over the Library's central pit. However, Keyes and her escorts were attacked by Arbiter Thel 'Vadamee, who was then quickly betrayed by Tartarus at the Prophet of Truth's behest.[6] Tartarus took the index to the Hierarchs who then enthusiastically announced the recovery of the "Sacred Icon" to the rest of the Covenant amidst the burgeoning Great Schism. Truth entrusted Tartarus with the index once again as he departed for Earth to journey to the Ark, with Tartarus slated to activate Installation 05. In the control room, however, the Jiralhanae Chieftain was confronted by the Arbiter and his newfound human ally, Sergeant Major Johnson. Despite being informed of the truth about the Halos, Tartarus forced the captive Commander Keyes to insert the index into the Core, initiating the ring's activation sequence. However, 'Vadamee managed to kill Tartarus before the ring could fire and Keyes rushed to remove the index from the energy stream in the control room's center, halting the installation's firing sequence but priming the rest of the Array for remote activation from the Ark.[7] The current status of the Index following these events remain unknown.[10]

Installation 03[edit]

In a plan to stop the Ur-Didact, John-117 connects Gamma Halo's Index to the control room's core.

ONI pioneer teams retrieved Installation 03's activation index weeks after the UNSC discovered the ring.[11] It was stored in a laboratory aboard the orbiting Ivanoff Station by July 2557.[12] The index came into the Ur-Didact's possession after he returned to Gamma Halo following his defeat in the New Phoenix Incident. The index fell from the Didact's hands when he was incapacitated and translocated away by 859 Static Carillon and was subsequently obtained by John-117, who took it to the installation's control room not to fire the ring, but to disable the Halo's safety protocols. This allowed Static Carillon to detach the entire plate section of the Halo housing the control room and plunge it on the Composer's Forge in order to vanquish the Didact.[8] Following Carillon's relocation of the installation elsewhere, the Index was apparently recovered from the Forge, and eventually secured by ONI at an undisclosed location.[10][13]

Trivia[edit]

Gallery[edit]

  • The Activation Index of Installation 04 in holographic form.

    The Activation Index of Installation 04 in holographic form.

  • John-117 approaching the Index of Installation 04.

    John-117 approaching the Index of Installation 04.

  • John-117 holding the Activation Index in his hand.

    John-117 holding the Activation Index in his hand.

  • John-117 with Alpha Halo's Index in his hand.

    John-117 with Alpha Halo's Index in his hand.

  • Miranda Keyes inspecting a hologram of an Index.

    Miranda Keyes inspecting a hologram of an Index.

  • Miranda Keyes reaches for the Index, in its floating container in the Installation 05's Library.

    Miranda Keyes reaches for the Index, in its floating container in the Installation 05's Library.

  • The Prophet of Mercy looking at a holographic projection of the Index.

    The Prophet of Mercy looking at a holographic projection of the Index.

  • The Prophet of Truth displays the Index to the Covenant.

    The Prophet of Truth displays the Index to the Covenant.

  • Cortana presenting the Index in holographic form.

    Cortana presenting the Index in holographic form.

  • The Prophet of Truth announces the Index's retrieval to the Covenant in Halo 2: Anniversary.

    The Prophet of Truth announces the Index's retrieval to the Covenant in Halo 2: Anniversary.

  • The Activation Index of Installation 03 aboard Ivanoff Station.

    The Activation Index of Installation 03 aboard Ivanoff Station.

  • Concept art of the index in Halo 2: Anniversary.

    Concept art of the index in Halo 2: Anniversary.

  • Framework also containing fragments of the Activation Index.

    Framework also containing fragments of the Activation Index.

List of appearances[edit]

Notes[edit]

  1. ^ It is unclear at this moment whether Cortana obtained the Index from Zeta Halo or retained a copy or fragments of the Index from Installation 04. However taking into account that the Weapon utilised the Index in the framework to trap Cortana, it is possible that fragments of the Alpha Halo Index were retained.

Sources[edit]

  1. ^ a b c Halo: Combat Evolved Anniversary - Library, "Activation Index"
  2. ^ Halo Waypoint, The New Halo Encyclopedia is Out Today (Retrieved on Mar 11, 2023) [archive]
  3. ^ a b c Halo 3, campaign level Halo
  4. ^ a b c d Halo: Combat Evolved, campaign level Two Betrayals
  5. ^ a b c Halo: Combat Evolved, campaign level The Library
  6. ^ a b Halo 2, campaign level Quarantine Zone
  7. ^ a b Halo 2, campaign level The Great Journey
  8. ^ a b Halo: Escalation, Issue #10
  9. ^ Halo Infinite, campaign level Foundation
  10. ^ a b Halo: Official Spartan Field Manual, page 99
  11. ^ Halo Waypoint: Gamma Halo
  12. ^ Halo 4, campaign level Composer
  13. ^ Halo: Escalation, Issue #10
  14. ^ Halo Legendary Crate, Data Drop #9

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