Editing Bastion

{{Status|Canon}}
{{Megastructure infobox
|image=[[File:Enc22 Bastion.jpg|275px]]
|description=
|location=[[Orion complex]] {{C|Formerly}}
|anchor=
|type=[[Shield world]]
|function=Librarian's laboratory
|caretaker=[[343 Guilty Spark|Spark]]
|constructed=
|destroyed=
|diameter=
|surface width=
|surface width-title=
|gravity=
|surface temperature=
|atmosphere=
}}
{{Quote|Bastion is absent. Not destroyed; simply missing. No other facility is near enough. A new course of action is required.|[[Keeper-of-Tools]]}}
{{Quote|"We have fully emerged into Bastion’s atmosphere. Aya. I am dumbstruck. I know what I behold even though it seems impossible. Of all the designs and models and world inspirations the Librarian could have selected… and she chose Earth as her template.|[[343 Guilty Spark|Spark]] to [[Rion Forge]]}}
'''Bastion''', also known as '''Shield World 0983''', is a [[shield world]] built to resemble [[Earth]] that acted as the [[Librarian]]'s secret laboratory.

==History==
Driven by her own ''[[geas]]'' from the [[Precursors]] to fix the path and set right what the Forerunners did wrong, the [[Librarian]] located the specimens left behind by two deceased Precursors while in [[Path Kethona]] searching out the origins of the [[Flood]]. Returning home with the specimens, the Librarian kept her discovery out of her report to the Ecumene Council and enlisted the help of the crew of the ''[[Audacity]]'' to transform a small [[shield world]] in its construction phase into Bastion and make it what it needed to be to nurture this eventual new species. The Librarian had the starship ''[[Eden (spaceship)|Eden]]'' built to carry the Precursor seeds and blooms to a world outside of the Milky Way galaxy that is ideal for planting and growth and where they can't be reached by the Flood. There, in some distant future, life on the planet will emerge and grow sentient, following the complete genetic code of the Precursors and rebirthing the race. However, they will be utterly free of genetic memory and will be able to build a new civilization with a clean slate. Bastion became the Librarian's secret laboratory away from the Ecumene Council and their rules and regulations containing the Librarian's most dangerous research and experiments. This included studies and experimentation on [[ancient humanity]], the [[Forerunners]] and the Precursors, ingenious observation and trials, studies with [[Living Time]], working [[Composer]]s, [[Cryptum]]s and other endless mysteries.{{Ref/Novel|Id=POL|PoL}}

In the final days of the [[Forerunner-Flood war]], [[Keeper-of-Tools]], [[Birth-to-Light]], [[Dawn-over-Fields]] and [[Clearance-of-Old-Forests]] were sent to be the caretakers of Bastion, but the Flood's advancement through Forerunner space changed things and caused the Forerunners' arrival to be delayed. Knowing that their work on Bastion was too dangerous to fall into Flood hands, the four uploaded their essences into the [[Domain]] until the war was over and the way to Bastion could be achieved in secrecy and safety. 

However, the firing of the [[Halo Array]] nearly destroyed the Domain, trapping and separating the four and possibly destroying the imprints of Birth, Dawn and Clearance.{{Ref/Novel|Id=POL294|PoL|Page=294}}

On [[2557#September|September 1, 2557]], [[343 Guilty Spark|Spark]] met with a personality imprint of the Librarian in [[Kilimanjaro Forerunner complex|a Forerunner complex]] beneath [[Mount Kilimanjaro]]. In the complex, 343 Guilty Spark suggested that after humanity is given the tools to achieve the [[Mantle of Responsibility]], there will be "Bastion". He could tell that the Librarian did not believe that she would ever make it there or to anywhere else where she would find rest and peace at last. With Spark choosing to remain with his friends aboard the ''[[Ace of Spades]]'',  the Librarian offered him a small etched box that she called [[coordinate key|a key]] with which he was to "''find what's missing. Fix the path. Right what my kind has turned wrong''".{{Ref/Novel|Ren|Chapter=48}}

Following [[Cortana]]'s accessing of the Domain on [[Genesis]], Keeper emerged from the Domain on the planet and left audio logs scattered across Genesis as he attempted to find his way to Bastion.{{Ref/Level|Id=Intel Reunion|H5|[[Reunion]]|Detail=[[Mission Intel]]}} Keeper determined that Bastion had been moved from its original location at some point even after slipspace had been destabilized by the deployment of the [[Halo Array]], though Keeper believed such an act would require a nearly impossible act of [[Slipspace#Reconciliation|causal reconciliation]].{{Ref/Reuse|Intel Reunion}} Bastion was important enough that Keeper was willing to lose corporeal existence and resort to existing within a [[durance]] and connecting to the [[Domain]] to reach it, but was unable to find it due to it being moved, and instead became trapped on Genesis.{{Ref/Level|Id=Intel Breaking|H5|[[The Breaking]]|Detail=[[Mission Intel]]}} In [[2558|late 2558]], the Builder accessed the Domain while [[Cortana]] and the [[Warden Eternal]] were distracted, and managed to finally confirm Bastion still existed.{{Ref/Level|Id=Intel|H5|[[Genesis (level)|Genesis]]|Detail=[[Mission Intel]]}} Keeper subsequently surmised that Bastion's safety measure had been activated at some point in the past, leading to it being moved.{{Ref/Reuse|POL294}}

At the same time, Spark and [[Rion Forge]] managed to locate Bastion in the [[Orion complex]] after passing a test given by the [[Precept]]. Their arrival momentarily opened Bastion's shields and transmitted a signal that Keeper was able to lock onto and use to transport himself into a [[monitor]] body on Bastion which was taken care of by monitors made out of indirect imprints of Birth, Dawn and Clearance. 

With the danger of the [[Guardian Custode|Guardians]] chasing him to Bastion, Keeper decided to send the shield world into a [[slipspace portal]] to an unknown location, but he first enlisted Rion and Spark's help to launch ''Eden'' to complete the Librarian's mission of ensuring the rebirth of the Precursors. Spark decided to remain behind on Bastion to act as its caretaker while Rion departed in the ''[[Ace of Spades]]''. Bastion made it through the portal without being followed and Spark initiated another jump to ensure that the shield world would be far from any Guardian's reach while he began going through the data left behind by the Librarian.{{Ref/Reuse|POL}}

==Trivia==
In a line of dialogue cut from ''[[Halo 5: Guardians]]'', Bastion is identified as "[[Shield world|Shield World]] 0983".<ref name="cut intel">https://files.catbox.moe/g4qgs6.mp3</ref>

==List of appearances==
*''[[Halo 5: Guardians]]'' {{Fm}}
*''[[Halo: Renegades]]'' {{Mo}}
*''[[Halo: Point of Light]]'' {{1st}}

==Sources==
{{Ref/Sources|array}}
{{Forerunner}}
[[Category:Shield worlds]]