Editing MJOLNIR Powered Assault Armor (GEN2)

{{Title|MJOLNIR Powered Assault Armor [GEN2]}}
{{Status|Canon}}
{{New content|[[Halo: Official Spartan Field Manual]]}}
{{Quote|[[SPARTAN-IV program|They]] were outfitted with Mjolnir GEN2 armor, the next evolution of the armor [[Catherine Halsey|Halsey]] had fashioned decades earlier.|[[Curator]] on GEN2 MJOLNIR<ref name="Mythos128">'''[[Halo Mythos]]''', ''page 128''</ref>}}
{{Armor infobox
|image= [[File:H5G - MJOLNIR Recruit render.png|250px|[[RECRUIT-class Mjolnir|Recruit]].]]
|type=[[MJOLNIR Powered Assault Armor]] 
GEN2
|role=General combat
|weight=
|features=Scanner Tool, Energy Shield
}}

The '''MJOLNIR Powered Assault Armor [GEN2]''' is the second system-wide generation of the [[MJOLNIR Powered Assault Armor]]. GEN2 introduces many improvements to the suit's core architecture, specifically tailored for use by the [[SPARTAN-IV program|Spartan-IV supersoldiers]].<ref name="O+A">[http://halo.xbox.com/halo4#!an-epic-universe/ordnance-armor/cbbca9b3-5108-41aa-aa21-9b523de68266 '''Halo 4''': ''ORDNANCE + ARMOR]'' (defunct)</ref><ref name="Game Informer May 2012">'''Game Informer''': ''May 2012''</ref><ref name="frankie">[http://members.shaw.ca/laird2/temp/derp/interview.mp3 Frank O'Connor interview during San Diego Comic-Con 2012 (1:15–2:10)]</ref>

The production of second generation Mjolnir armor uses a spiral-development model, allowing the [[United Nations Space Command]] and its various contracted, corporate partners to create and design armor systems much faster and more efficiently than before.<ref name="universe">[https://www.halowaypoint.com/en-us/universe/tech/mjolnir '''Halo Waypoint''': ''MJOLNIR'']</ref> While MJOLNIR GEN2 would largely be replaced by [[MJOLNIR Powered Assault Armor (GEN3)]] by late [[2559]],{{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}} GEN2 would see continued use for years.{{Ref/Site|Id=CFConcert|URL=https://www.halowaypoint.com/news/canon-fodder-concert-of-words|Site=Halo Waypoint|Page=Canon Fodder - Concert of Worlds|D=25|M=09|Y=2023}}

==History==
===Early history and development===
{{Quote|Spartan Thomas, you will get your armor when you show me you deserve to wear it.|[[Commander]] [[Musa-096]], to Spartan [[Joel Thomas]] and several other Spartan-IV trainees<ref name="hei2">'''[[Halo: Initiation]]''', ''[[Halo: Initiation Issue 2|Issue #2]]''</ref>}}
[[File:H5G-Cinematic-Blue-Team-Fallout.png|thumb|250px|left|Spartan-IIs of Blue Team in GEN2 armor.]]
The GEN2 Mjolnir armor was initially developed and created by the [[Office of Naval Intelligence]]'s [[Materials Group]] as a response to the emerging [[SPARTAN-IV program]], initiated on [[2553#January|January 7, 2553]].<ref name="spartans waypoint">[https://www.halowaypoint.com/en-us/universe/factions/spartans '''Halo Waypoint''': ''Spartans'']</ref> Several early models of the GEN2 Mjolnir armor were field tested by Spartan [[Tedra Grant]].<ref>'''[[Halo 4: The Essential Visual Guide]]''', ''page 24''</ref> Some of the first contemporary models of the GEN2 Mjolnir armor were first tested in combat in [[2553#January|January 2553]] when [[New Colonial Alliance]] forces launched [[Raid on UNSC Infinity|a raid]] on the {{UNSCShip|Infinity}} and the five Spartan-IVs in-training aboard the [[warship]] were forced to don the armor to help combat the insurgents.{{Ref/Reuse|hei2}}

As of [[2558]], GEN2 armor is standard-issue for nearly all active Spartans, having replaced the [[Semi-Powered Infiltration armor]] of the [[SPARTAN-III program|Spartan-IIIs]].<ref name="fifty caliber">[https://www.halowaypoint.com/en-us/news/canon-fodder-fifty-caliber '''Halo Waypoint''': ''Canon Fodder - Fifty Caliber'']</ref> The remaining active [[SPARTAN-II program|Spartan-II]]s, such as those on [[Blue Team]], have since donned GEN2 armor.<ref name="warfare">[https://www.halowaypoint.com/en-us/news/canon-fodder-conventional-warfare '''Halo Waypoint''': ''Canon Fodder - Conventional Warfare'']</ref> Initially, Spartan-II [[Naomi-010]] used [[MJOLNIR Powered Assault Armor/Mark VII|MJOLNIR Mark VII Powered Assault Armor]], the last iteration of the first generation of Mjolnir armor.<ref name="glass291">'''[[Halo: Glasslands]]''', ''page 291''</ref> However, the Mark VII never saw full implementation with the rest of the Spartan-IIs due to its complexity and expense. Eventually, the UNSC determined that continuing to fund the first generation of Mjolnir armor that was only focused on the Spartan-IIs was not worth the costs, particularly given the escalating costs and capabilities of the newer Spartan-IIIs and Spartan-IVs in GEN2 armor.{{Ref/Reuse|universe}} As a result, the Mark VII has largely been phased out of production in favor of the GEN2 Mjolnir, though many technologies developed for the Mark VII have since been incorporated into the GEN2 armor.<ref>[https://www.halowaypoint.com/en-us/news/canon-fodder-reqlamation-begins '''Halo Waypoint''': ''Canon Fodder - Reqlamation Begins'']</ref>

Although the GEN2 armor meant a radical simplification of the Mjolnir platform, to the point it could be mass-produced, by [[2558#October|October 2558]] some operatives in the Spartan Operations branch were dissatisfied with its minimal performance improvement over the old GEN1 systems. With that reason in mind, the UNSC decided to develop and manufacture GEN2's successor, the [[MJOLNIR Powered Assault Armor (GEN3)|MJOLNIR Powered Assault Armor [GEN3]]].<ref>'''Halo: Official Spartan Field Manual''' ''- Page  178''</ref>

===Expansion of contractors===
While the previous iteration of the [[MJOLNIR Powered Assault Armor]] was often—though, not always—created and manufactured by organizations, departments, and branches of the [[United Nations Space Command]], the [[Unified Earth Government]] has contracted numerous corporations to design GEN2 armor variants. For example, [[RKD Group]] was responsible for designing the [[MIRMILLION-class Mjolnir|MIRMILLION-class armor variant]], though the group contracted [[Korolev Heavy Industries]] to produce the armor and licensed the suit's [[MJOLNIR GEN2 BIOS|BIOS]] from [[Applied Heuristics]]. Even major military-industrial concerns, such as [[Beweglichkeitsrüstungsysteme]], no longer control all aspects of their armors' tactical packages and software,<ref name="canon fodder armory">[https://www.halowaypoint.com/en-us/news/canon-fodder-armory-amore '''Halo Waypoint''': ''Canon Fodder - Armory Armore'']</ref> both within the military and among private contractors. Production of some GEN1 variants was shifted between corporate entities, while other contracts were transferred from the military to private industries. In addition to these larger corporations, a major policy shift within the UEG has led to smaller corporations and businesses being given the opportunity to compete in the paramilitary, military, and security markets.<ref>'''Halo 5: Guardians''', ''Foucault visor description''</ref> Many smaller industrial design firms and military subcontractors have used the common GEN2 Mjolnir software and exoskeleton as a springboard for their own innovations.{{Ref/Reuse|canon fodder armory}} Nonetheless, UNSC organizations, such as Materials Group and the [[Watershed Division]], still continue to manufacture several variants of the GEN2 Mjolnir armor.{{Ref/Reuse|warfare}}

In addition to human corporations, select other species have had a role in the development of some iterations of GEN2 Mjolnir armor and its components. Notably, the [[HELIOSKRILL-class Mjolnir]] was designed by a [[Sangheili]] artisan-armorer designer who had managed to reverse-engineer the Mjolnir armor in an effort to test her skills against humanity's best armor manufacturers. This Mjolnir variant is designed by [[Sanghelios]]' [[Kolaar Manufactorum]] and fielded among the Spartan-IVs.<ref>'''Halo 5: Guardians''', ''Helioskrill armor description''</ref> Some VISR designs have been created using high-tier [[Nanolaminate hull plating|nanolaminates]] and scanning elements provided by the Sangheili,<ref>'''Halo 5: Guardians''', ''Dauntless visor description''</ref> while others are even compatible with the [[Combat harness|Sangheili combat harness]].<ref>'''Halo 5: Guardians''', ''Saturnine visor description''</ref> As ties between the [[Swords of Sanghelios]] and UEG strengthen, many Sangheili artisans have gained interests in working with GEN2 armor.{{Ref/Reuse|canon fodder armory}} The "King" VISR utilized by some Spartans was initially created by a bored [[Huragok]] and subsequent attempts to copy the design have been met with varying levels of failure.<ref>'''Halo 5: Guardians''', ''King visor description''</ref> Even [[Forerunner]] technology has been incorporated into the armor.{{Ref/Reuse|fifty caliber}} Additionally, VISR kits with an unknown manufacturer have been found by ONI operatives in the arms markets of the [[Venezian Militia|insurgent]]-controlled [[Venezia]].<ref>'''Halo 5: Guardians''', ''Dianthus visor description''</ref>

==Design details==
===Design and features===
[[File:H5GA-Lockerunning.png|thumb|250px|[[Jameson Locke]] using his armor's thrusters.]]
The armor was designed to compensate for the [[SPARTAN-IV program|Spartan-IVs]]' less extensive [[SPARTAN-IV Augmentation Program|physical augmentations]] in comparison to the previous [[SPARTAN-II program|two]] [[SPARTAN-III program|generations]]. As a result, the armor multiplies the strength of its wearer significantly more than the first-generation suits, granting the Spartan-IVs roughly equal strength as their predecessors while wearing the suit.{{Ref/Reuse|frankie}}<ref>[http://www.gameinformer.com/b/features/archive/2015/06/11/halo-5-guardians-unmasking-the-fireteam-hunting-master-chief.aspx '''GameInformer.com''': ''Halo 5: Guardians - Unmasking The Fireteam Hunting Master Chief'']</ref> The GEN2 suit is also lighter and stronger in construction than the first-generation Mjolnir line,{{Ref/Reuse|O+A}}{{Ref/Reuse|Game Informer May 2012}}{{Ref/Reuse|frankie}} weighing approximately a few hundred kilograms.<ref>'''Halo: New Blood''', ''page 157'' (Google Play edition)</ref> GEN2 Mjolnir integrates the vast majority of the armor's vital hardware systems within the inner techsuit itself, allowing for more streamlined production and easier implementation of specialized subsystems and armatures.{{Ref/Reuse|universe}}

The GEN2 armor incorporates new ''ad hoc'' modification systems which allow the armor to use [[armor abilities]], [[tactical packages]], and [[support upgrades]].<ref name="H4">'''[[Halo 4]]'''</ref> Like its GEN1 predecessors it is backwards compatible—through hardware and firmware upgrades—with previous armor systems, including the [[MJOLNIR Powered Assault Armor/Mark IV|Mark IV]], [[MJOLNIR Powered Assault Armor/Mark V|Mark V]], [[MJOLNIR Powered Assault Armor/Mark VI|Mark VI]], and the MJOLNIR variant of the [[ODST armor|Orbital Drop Shock Troopers' armor]].<ref name="RT13">'''Rooster Teeth Expo 2013'''</ref> In addition, GEN2 armor features integration with [[artificial intelligence]]s, ranging from volitional [[smart AI]]s to simpler, yet still complex, [[dumb AI]]s. The AIs that manage the Mjolnir BIOS and VISR are generally passive helpers that integrate, prioritize, and even subtly alter the torrent of data and sensory overrides fed to the armor's Spartan user, simplifying the chaos of the battlefield and reducing confusion. These AIs also handle mundane administrative tasks by filing munition expenditure forms, battle damage assessments, kill reports, and other paperwork on behalf of the Spartan. The typical suit of Mjolnir armor carries around a dozen or so of these AIs, each specialized in numerous tasks of war and science to aid the Spartan they are attached to. While these AIs are incapable of a human's oversight, they are still a valuable component of the armor.{{Ref/Reuse|canon fodder armory}}

The [[BROKKR Armor Mechanism]] is a Da Vinci multi-axis assembly system used to mount Mjolnir onto a Spartan's techsuit.{{Ref/Reuse|Mythos128}}

===Customization===
{{Quote|That armor was fantastic, but the colors on it never held up. It always came back from every mission scratched, scraped, and dinged to hell. And that was the way we liked it.|Spartan [[Edward Buck]], commenting on the armor's paint<ref name="nb153">'''Halo: New Blood''', ''page 153'' (Google Play edition)</ref>}}
[[File:H5-Mutliplayer-SpartanIVs-GEN2-Armors.jpg|thumb|250px|left|Several variants of the GEN2 Mjolnir armor.]]
Many Spartan-IVs choose to customize their armor in a variety of ways and are typically given the option to choose armor variant, paint color, visor model, and other cosmetic features. Even tech suits can be modified based on the Spartan's mission or need.<ref name="fowl">[https://www.halowaypoint.com/en-us/news/canon-fodder-fowl-play '''Halo Waypoint''': ''Canon Fodder: Fowl Play'']</ref>

An assortment of armor configurations are available for all new Spartan-IV recruits as per [[UNSC Regulation 3A-950]], and Spartans are capable of customizing their individual armor set with modular components from a wide range of special-purpose variants, based on their personal preferences, specialization and mission requirements. Selecting variants for purely cosmetic reasons is discouraged. The UNSC strictly forbids Spartans from attempting to repair or modify their armor on their own; all armor maintenance is only to be performed by qualified Class-61 technicians in dedicated facilities.<ref name="packet">'''[[Halo 4 Limited Edition]]''', ''[[Infinity Briefing Packet]]''</ref> Unlike the generally green coloration of the Spartan-IIs' Mjolnir armor, Spartan-IV armor comes in a profusion of distinct color patterns, with the members of specific teams sometimes (though not always) sporting a consistent coloration.<ref name="spops">'''Halo 4''', ''Spartan Ops''</ref> However, any customization of the armor color must be in accordance to [[UNSC Equipment Code 20.00.62]].{{Ref/Reuse|packet}} The paint used on each GEN2 Mjolnir armor set is known to quickly deteriorate in combat, as little effort was made to invest in stronger quality paint.{{Ref/Reuse|nb153}}

While the suit's primary production model bears less significance than in the previous Mjolnir generations due to GEN2's more distributed design philosophy, the Materials Group's [[WARRIOR-class Mjolnir|Warrior]] variant is officially considered the mainline model of the GEN2 armor. Another prevalent model is the [[RECRUIT-class Mjolnir|Recruit]] variant, which is issued to all Spartan-IVs upon induction<ref>'''Halo 4''', ''Spartan Armor menu descriptions''</ref> and colored gray and gold by default.<ref>'''Halo 4''' campaign level, ''[[Infinity (level)|Infinity]]''</ref>

GEN2 Mjolnir is also able to be hybridized with GEN1 Mjolnir suits. When Douglas-042's Mark IV armor was damaged and {{UNSCShip|Spirit of Fire}} was unable to produce core components during [[Second Ark Conflict]], the ''Spirit'' managed to upgrade the suit into a hybrid version of Mark IV/GEN2, along with the rest of [[Red Team]]'s armor, thanks to amalgamation of modifications made by [[Isabel]] and [[Serina]] and recovery of GEN2 parts from UNSC outposts.<ref>[[MJOLNIR Powered Assault Armor/Mark IV#Red Team.27s hybrid GEN2.2FMARK IV]]</ref>

===BIOS===
The suit also possesses other upgraded features that enhance its wearer's abilities. It has an upgraded heads-up display linked to sensors that project shield strength and an improved motion detecting system in addition to providing other numerous readouts, including allies' vitality and shield status. These features are maintained and initialized by the [[MJOLNIR GEN2 BIOS]] firmware. Numerous versions exist for several different reasons and to simply being an upgrade.

==Armor variants and upgrades==
===Variants===
The following is a list of major variants of the GEN2 platform.{{Ref/Note|To avoid unnecessary clutter caused by redundant citations, all subsequent entries are cited using the ''Halo 4'' and ''Halo 5: Guardians'' Spartan Armor menus.}}
{{Scrollbox|
{{Col-begin}}
{{Col-2}}
*'''[[ACHILLES-class Mjolnir|Achilles]]''' - A variant that features an aggressive AI
*'''[[AIR ASSAULT-class Mjolnir|Air Assault]]''' - A variant utilized primarily by ONI security personnel on [[Earth]]'s and [[Luna]]'s [[space elevator]]s and [[skyhook]]s
*'''[[ANUBIS-class Mjolnir|Anubis]]''' - A variant with enhanced sensor suite
*'''[[ARGONAUT-class Mjolnir|Argonaut]]''' - A variant with move-by-wire reflex enhancers
*'''[[ARGUS-class Mjolnir|Argus]]''' - A variant with an increase in situational and threat awareness
*'''[[ARTAIUS-class Mjolnir|Artaius]]''' - A variant of combat exoframe, compatible with GEN2
*'''[[ATHLON-class Mjolnir|Athlon]]''' - A variant used in [[War Games|combat training exercises]]
*'''[[ATLAS-class Mjolnir|Atlas]]''' - A variant that features modular armor and weapons
*'''[[AVIATOR-class Mjolnir|Aviator]]''' - A variant designed for aircraft piloting. Required for use by Spartan [[F-41 Broadsword]] pilots
*'''[[BARVO-class Mjolnir|Barvo]]''' - A variant used in high-altitude insertion ops and elite threat-detection
*'''[[BREAKER-class Mjolnir|Breaker]]''' - A variant with tactical supremacy and increased endurance
*'''[[BUCCANEER-class Mjolnir|Buccaneer]]''' - An armor that uses off-the-shelf components, compatible with GEN2
*'''[[CENTURION-class Mjolnir|Centurion]]''' - A variant for operational planning and situational awareness, upgraded from GEN1
*'''[[CHALLENGER-class Mjolnir|Challenger]]''' - A variant for high performance in War Games
*'''[[CINDER-class Mjolnir|Cinder]]''' - A variant used for securing biologically and chemically contaminated areas
*'''[[CIO-class Mjolnir|CIO]]''' - A variant for Counter-Intelligence Operators
*'''[[COMMANDO-class Mjolnir|Commando]]''' - A variant for special operations, upgraded from GEN1
*'''[[COPPERHEAD-class Mjolnir|Copperhead]]''' - A variant for covert ops
*'''[[CYCLOPS-class Mjolnir|Cyclops]]''' - A variant with a more powerful fusion pack
*'''[[CYPHER-class Mjolnir|Cypher]]''' - A variant that features a pilot program
*'''[[CQB-class Mjolnir|CQB]]''' - A variant designed for close quarters combat, upgraded from GEN1
*'''[[DEADEYE-class Mjolnir|Deadeye]]''' - A variant designed for snipers
*'''[[DECIMATOR-class Mjolnir|Decimator]]''' - A variant that incorporates technological advances from previous iterations of GEN1, specifically breakthroughs from the [[Mark VII]]
*'''[[DEFENDER-class Mjolnir|Defender]]''' - A variant designed for general area denial and tactical defensive abilities
*'''[[DYNAST-class Mjolnir|Dynast]]''' - A variant designed for close-range combats
*'''[[EOD-class Mjolnir|EOD]]''' - A variant designed to facilitate explosive ordnance disposal, upgraded from GEN1<ref name="LE Contents">[[:File:Halo-4-limited-edition.jpeg|''Halo 4 Limited Edition Contents'']]</ref>
*'''[[ENFORCER-class Mjolnir|Enforcer]]''' - A variant designed for remote security base detail
*'''[[ENGINEER-class Mjolnir|Engineer]]''' - A variant designed for repairing and reconfiguring technology in combat<ref name="The Halo Bulletin: 8.15.12">[http://halo.xbox.com/blogs/Headlines/post/2012/08/15/The-Halo-Bulletin-81512.aspx '''Halo Waypoint''': ''Halo Bulletin 8.15.12''] (defunct, backup link on [https://web.archive.org/web/20120925085732/http://blogs.halo.xbox.com/Headlines/post/2012/08/15/The-Halo-Bulletin-81512.aspx Archive.org])</ref>
*'''[[EVA-class Mjolnir|EVA]]''' - A variant designed for [[extra-vehicular activity]], upgraded from GEN1
*'''[[FENRIR-class Mjolnir|Fenrir]]''' - A variant with an embedded battle management AI
*'''[[FOEHAMMER-class Mjolnir|Foehammer]]''' - A variant designed for better pilot synchronization
*'''[[FOTUS-class Mjolnir|FOTUS]]''' - A variant based on Forerunner stealth technology<ref>[http://halo.xbox.com/blogs/Headlines/post/2012/07/25/The-Halo-Bulletin-72512.aspx : ''The Halo Bulletin 7.25.12'']</ref>
*'''[[FREEBOOTER-class Mjolnir|Freebooter]]''' - A variant with seamless nanofabricated armor panels
*'''[[GOBLIN-class Mjolnir|Goblin]]''' - A variant with sensor-warping technology
*'''[[GUNGNIR-class Mjolnir|GUNGNIR]]''' - A variant based on the alternate system platform from MJOLNIR. Upgrade of GEN1 model developed by [[Project GUNGNIR]]
*'''[[HAZOP-class Mjolnir|HAZOP]]''' - A variant for environments considered too hazardous for standard equipment, upgraded from GEN1
*'''[[HELIOSKRILL-class Mjolnir|Helioskrill]]''' - A variant designed by a [[Sangheili]] prodigy
*'''[[HELLCAT-class Mjolnir|Hellcat]]''' - A variant based on ancient human armor
*'''[[HELLJUMPER-class Mjolnir|Helljumper]]''' - A variant that is a significant redesign and improvement of the ODST armor
*'''[[HERMES-class Mjolnir|Hermes]]''' - A variant used for orbital raids
*'''[[HUNTER-class Mjolnir|Hunter]]''' - A variant for advanced tracking and targeting acquisitions
*'''[[ICARUS-class Mjolnir|Icarus]]''' - A variant for Spartan aerospace pilots
*'''[[INDOMITABLE-class Mjolnir|Indomitable]]''' - A variant for engineering and explosive ordnance disposal; based on the customized armor set worn by [[Jorge-052]]
*'''[[INFILTRATOR-class Mjolnir|Infiltrator]]''' - A variant designed for stealthy infiltration of enemy territory
*'''[[INTERCEPTOR-class Mjolnir|Interceptor]]''' - A variant that features highly configurable settings and a programmable neural interface
*'''[[INTRUDER-class Mjolnir|Intruder]]''' - A variant based on [[Catherine-B320]]'s Mark V Air Assault armor, developed as part of a research initiative into specialized Mjolnir suits
*'''[[JUMPMASTER-class Mjolnir|Jumpmaster]]''' - A variant designed for free-fall combat drops
*'''[[LEGIONNAIRE-class Mjolnir|Legionnaire]]''' - A variant produced by RKD to be licenced to smaller companies
*'''[[LOCUS-class Mjolnir|Locus]]''' - A variant designed for tactical and strategic infiltration. Known for its incredible resiliency
*'''[[MAKO-class Mjolnir|Mako]]''' - A variant designed for multi-environment adaptation
*'''[[MARAUDER-class Mjolnir|Marauder]]''' - a variant designed for general-purpose use
*'''[[MIRMILLION-class Mjolnir|Mirmillion]]''' - A variant with optimized combat flexibility
*'''[[MJOLNIR Powered Assault Armor/Mark IV|Mark IV]]''' - Upgraded to function with the Mjolnir [GEN2] suite
*'''[[MJOLNIR Powered Assault Armor/Mark V|Mark V]]''' - Upgraded to function with the Mjolnir [GEN2] suite
{{Col-2}}
*'''[[Mark V Alpha]]''' - A variant based on the GEN1 Mark V, designed specifically for the [GEN2] suite
*'''[[Mark V Delta]]''' - A variant based on a Mark V helmet compatible with the Mark VI armor. Upgraded from GEN1
*'''[[MJOLNIR Powered Assault Armor/Mark VI|Mark VI]]''' - A variant based on the GEN1 Mark VI, designed specifically for the [GEN2] suite
*'''[[Mark VI MOD]]''' - A modified variant of the Mark VI
*'''[[MP-class Mjolnir|MP]]''' - A variant of the standard-issue CH252 helmet, upgraded from GEN1
*'''[[Nightfall armor|Nightfall]]''' - A variant used on inhospitable worlds, featuring best-in-class life support systems
*'''[[NOBLE-class Mjolnir|NOBLE]]''' - A variant based upon the Mark V Commando armor, with improved [[UNSC battle network|battle network]] management features
*'''[[NOMAD-class Mjolnir|Nomad]]''' - A variant designed for remote expeditions in uncharted space
*'''[[OCEANIC-class Mjolnir|Oceanic]]''' - A variant designed for combat in waterfront areas
*'''[[ODST armor (MJOLNIR)|ODST]]''' - A variant of the ODST armor, upgraded to function with the Mjolnir [GEN2] suite
*'''[[OLIVE-class Mjolnir|Olive]]''' - A variant that helps hide hair. Only available for use in War Games simulations 
*'''[[ORBITAL-class Mjolnir|Orbital]]''' - A variant designed for EVA combat
*'''[[OPERATOR-class Mjolnir|Operator]]''' - A variant designed to optimize vehicle operation, upgraded from GEN1{{Ref/Reuse|The Halo Bulletin: 8.15.12}}
*'''[[PATHFINDER-class Mjolnir|Pathfinder]]''' - A variant designed for missions in intel-poor environments{{Ref/Reuse|LE Contents}}
*'''[[PILOT-class Mjolnir|Pilot]]''' - A variant derived from the helmets used by the Air Force pilots, upgraded from GEN1
*'''[[PIONEER-class Mjolnir|Pioneer]]''' - A variant designed for missions in unfamiliar, hostile environments{{Ref/Reuse|The Halo Bulletin: 8.15.12}}
*'''[[PREFECT-class Mjolnir|Prefect]]''' - A variant based on [[Forerunner personal armor]]{{Ref/Reuse|RT13}} 
*'''[[PROTECTOR-class Mjolnir|Protector]]''' - A variant designed for VIP security
*'''[[RAIDER-class Mjolnir|Raider]]''' - A variant designed with Samurai-like aesthetics for intimidation of hostiles
*'''[[RAIJIN-class Mjolnir|Raijin]]''' - A variant that maximizes short-term combat performance
*'''[[RANGER-class Mjolnir|Ranger]]''' - A variant designed for remote operatives engaging in hostile environmental conditions
*'''[[REAPER-class Mjolnir|Reaper]]''' - A variant based on Forerunner [[combat skin]]s
*'''[[RECLUSE-class Mjolnir|Recluse]]''' - A variant for classified operations
*'''[[RECON-class Mjolnir|Recon]]''' - A variant designed for stealth reconnaissance operations, upgraded from GEN1
*'''[[RECRUIT-class Mjolnir|Recruit]]''' - Issued to all Spartan-IV recruits prior to qualification for specialized models{{Ref/Reuse|LE Contents}}
*'''[[RICOCHET-class Mjolnir|Ricochet]]''' - A variant designed for use in [[Gravball#Ricochet|Ricochet]] combat training exercises{{Ref/Reuse|RT13}}
*'''[[ROGUE-class Mjolnir|Rogue]]''' - A variant designed for extended solo operations, upgraded from GEN1{{Ref/Reuse|The Halo Bulletin: 8.15.12}}
*'''[[SCANNER-class Mjolnir|Scanner]]''' - A variant designed to aid search-and-rescue teams
*'''[[SCOUT-class Mjolnir|Scout]]''' - A variant designed for scouting operations, upgraded from GEN1
*'''[[SECURITY-class Mjolnir|Security]]''' - A variant designed for shipboard and station defense, upgraded from GEN1
*'''[[SEEKER-class Mjolnir|Seeker]]''' - A variant equipped with a full suite of signature masking mechanisms for reconnaissance
*'''[[SHINOBI-class Mjolnir|Shinobi]]''' - An armor with no known manufacturer, compatible with GEN2
*'''[[SOLDIER-class Mjolnir|Soldier]]''' - A variant with extra storage space designed for battlefield support
*'''[[STALKER-class Mjolnir|Stalker]]''' - A variant designed to aid in covert shadowing of a target, derived from [[Jiralhanae Stalker]] stealth harnesses{{Ref/Reuse|The Halo Bulletin: 8.15.12}}
*'''[[STINGER-class Mjolnir|Stinger]]''' - A variant designed for flight and ground combat
*'''[[STRIDER-class Mjolnir|Strider]]''' - A variant for jaunt-combat excursions in isolated theaters
*'''[[TECHNICIAN-class Mjolnir|Technician]]''' - A variant for combat engineers
*'''[[TEISHIN-class Mjolnir|Teishin]]''' -  A variant designed for augmented soldiers serving in paramilitary and clandestine agencies
*'''[[TIMMY-class Mjolnir|Timmy]]''' - An enigmatic War Games only variant
*'''[[TRACER-class Mjolnir|Tracer]]''' - A variant used for intelligence gathering, featuring a Tier-III datacore
*'''[[TRACKER-class Mjolnir|Tracker]]''' - A variant designed to aid in long-range pursuit of targets{{Ref/Reuse|The Halo Bulletin: 8.15.12}}
*'''[[VALKYRIE-class Mjolnir|Valkyrie]]''' - A variant designed for aerospace flight control
*'''[[VANGUARD-class Mjolnir|Vanguard]]''' - A variant designed for face-to-face enemy assaults
*'''[[VECTOR-class Mjolnir|Vector]]'''- A variant designed as a pilot/infantry hybrid for reconnaissance teams
*'''[[MJOLNIR Powered Assault Armor/Venator|Venator]]''' - A variant optimized for single-enemy combat, upgraded from GEN1
*'''[[VENTURE-class Mjolnir|Venture]]''' - A variant designed for survey missions in extreme environments
*'''[[VIGILANT-class Mjolnir|Vigilant]]''' - A variant based on [[Jun-A266]]'s customized Mark V suit, designed for scouting and sniper operations
*'''[[VIPER-class Mjolnir|Viper]]''' - Variant designed with proprietry powerpack and neural interface technology
*'''[[VOID DANCER-class Mjolnir|Void Dancer]]''' - A variant designed for exoatmospheric operations and threat assessment
*'''[[WARRIOR-class Mjolnir|Warrior]]''' - A variant designed for speed and mobility. MJOLNIR's mainline armor kit
*'''[[WAR MASTER-class Mjolnir|War Master]]''' - A variant designed with multi-functional configuration for almost any combat scenario. [[Lethbridge Industrial]]'s most popular and most exotic armor
*'''[[WETWORK-class Mjolnir|Wetwork]]''' - A variant designed for assassination operations{{Ref/Reuse|The Halo Bulletin: 8.15.12}}
*'''[[WRATH-class Mjolnir|Wrath]]''' - A variant based on [[Emile-A239]]'s custom Mark V armor, designed for use by [[Headhunters]]
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}}

===Forearms and legs===
There are several forearms and legs not paired with a specific set that can be used with most GEN2 armor.
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*'''[[Contoured]]:''' This variant is manufactured by [[Lethbridge Industrial]]. The forearms were favored during the hostilities of the [[Thales|Thales Expedition]]. The legs were based on native Sangheili equipment.{{Ref/Reuse|H4}} There is a SHARD skin for this set.

*'''[[GV-09 Locking]]:''' These forearms are manufactured by [[Acheron Security]] on the planet [[Mars]]. These improve comfort through modularity.{{Ref/Reuse|H4}} There is a FOREST skin related to HAZOP armor.

*'''[[Inner-plated]]:''' This variant is manufactured by the [[Materials Group]]. These forearms gained popularity during the revolt on [[Terceira]].{{Ref/Reuse|H4}} There is a WEB skin related to CIO armor.

*'''[[LG-50 Bulk]]:''' This variant is manufactured by [[Imbrium Machine Complex]]. The legs were designed with intentional redundancy to decrease risk of breach.{{Ref/Reuse|H4}} There is a PULSE skin related to GUNGNIR armor.

*'''[[Outer-plated]]:''' The forearms of this variant are manufactured by Lethbridge Industrial. The forearms were originally conceived for engagement operators on Cascade. The legs of this variant are manufactured by the Materials Group. The whole system saw little activity until the Concord incident in [[2554]].{{Ref/Reuse|H4}} The wrists have a RAPTOR skin related to Venator armor. The Legs have a CIRCUIT skin related to Oceanic armor.
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*'''[[Over-locking]]:''' This variant is manufactured by the Imbrium Machine Complex. The legs have seen recent exposure with outworld security personnel.{{Ref/Reuse|H4}} There is a WEB skin related to CIO armor.

*'''[[RG-63 Counter]]:''' This variant is manufactured by Imbrium Machine Complex. These forearms were developed based on intel from the [[Harvest campaign]].{{Ref/Reuse|H4}} There is a PRIME skin related to Recruit armor. There is a FOREST skin related to HAZOP armor.

*'''[[Twin-plated]]:''' This variant is manufactured by [[Naphtali Contractor Corporation]]. These forearms first saw use in [[2556]], but were prototyped during Mjolnir's GEN1 era.{{Ref/Reuse|H4}} There is an AEON skin for this set.

*'''[[XG-89 Narrow]]:''' This variant is manufactured by the Materials Group. The narrow-slat legs excel at shield distribution while reducing ceramic profile.{{Ref/Reuse|H4}} There is a RAPTOR skin related to Venator armor.

*'''[[XV-27 Shifting]]:''' This variant is manufactured by Naphtali Contractor Corporation. These forearms were tested in the [[Buffalo Breaker Yards]].{{Ref/Reuse|H4}} There is a CIRCUIT skin related to Oceanic armor. There is a PULSE skin related to GUNGNIR armor.
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}}

===Attachments===
The armor system is built to support a variety of attachments and equipment which allow it to utilize [[armor abilities]]. Some of them have been reverse-engineered from [[Covenant]] and [[Forerunner]] technology.
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*'''[[Airstrike]]''' - Calls in heavy munitions around the user
*'''[[M2705 regeneration field]]''' - Applies a force to remove hostiles from the presence of the user and then temporarily appropriates armor system functions, targeting biological and combat vitality-oriented armor functions in order to heal the user and repair the armor
*'''[[M805X thruster pack]]''' - A booster pack used to propel the wearer forward or to either side
*'''[[Overshield]]''' - A Covenant-developed technology that strengthens the user's energy shielding system
*'''[[Covenant proximity mine|Proximity mines]]''' - Deploys three mines that lock onto hostiles
*'''[[Repel]]''' - Flash-freezes a small area, causing considerable harm to nearby personnel and equipment
*'''[[Seeker drone]]''' - An explosive homing drone
*'''[[Series 12 jetpack]]''' - Mitigates gravity, allowing mobility over challenging terrain
*'''[[Shock chain]]''' - Creates an energy shield that damages enemies and restores the user's energy shielding
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*'''[[Stun blast]]'''  - Creates a short-range [[electromagnetic pulse]] (EMP) which interferes with all electronic equipment within the radius of the pulse
*'''[[Teleport]]''' -  Allows near-instantaneous transport over short distances
*'''[[Type-27 hologram]]''' - Creates a holographic projection of the user that can draw enemy fire
*'''[[Type-3 active camouflage]]''' - Affords the wearer a brief period of near-invisibility in addition to scrambling nearby motion detectors
*'''[[Z-2500 autosentry]]''' - A Forerunner-created support drone used to suppress enemy combatants 
*'''[[Z-4190 bubble shield]]''' - A stationary shield reverse-engineered from Forerunner technology
*'''[[Z-5080 Promethean vision]]''' - A sonar-like Forerunner visual enhancement system that displays movement through solid objects
*'''[[Z-90 hardlight shield]]''' - A shield made from [[hard light]] reverse-engineered from Forerunner technology
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}}

==Armor components==
[[File:SPARTAN-IV Exo-suit.jpg|thumb|250px|The GEN2 techsuit.]]
*'''[[Biofoam]] injectors''': Allow for physical injuries to be sealed and repaired without the use of external medical kits.
*'''[[Energy shielding]]''': A protective barrier that surrounds the armor and protects the user from harm.<ref name="nb152">'''[[Halo: New Blood]]''', ''pages 152-154'' (Google Play edition)</ref>
*'''Inner skinsuit''': The inner skinsuit is made of a moisture-absorbing synthetic material linked to an environmental control computer and the occupant's neural interface. It controls the suit's temperature and actively changes how the suit fits the user.<ref name="FoR3">'''[[Halo: The Fall of Reach]]''', ''page 71'', (2001) ''page 81'', ''page 90'' (2010)</ref> 
*'''[[Fusion reactor|Compact fusion reactor]]''': The fusion reactor is the most essential part of the MJOLNIR system, as it provides power to all equipment on the armor—the reactor is built into the suit and allows for nearly unlimited movement. [GEN2]'s fusion reactor is installed at the back of the torso carapace.<ref>[https://www.halowaypoint.com/en-us/community/blog-posts/the-halo-bulletin-knowledge-drop '''Halo Waypoint''': ''Halo Bulletin 9.24.14'']</ref>
*'''Magnetic weapon holder strips''': The MJOLNIR armor features very small, yet powerful magnets placed on the legs, waist, and back of the suit that are used to hold any equipment or any weapons with a magnetic property. The suit also contains a magnet system within its boots that allows its wearer to stay attached to a metal surface in zero gravity environments and can be toggled on or off by the wearer.<ref name="VIS">'''[[Halo 4: The Essential Visual Guide]]''', ''page 10''</ref>
*'''[[MJOLNIR power supply control unit|Power supply control unit]]''': Manages the power supply of the armor.
*'''[[MJOLNIR GEN2 BIOS]]''': The basic input/output system, standard firmware interface of the GEN2 suite.<ref>'''[[Halo 4]]''', ''Heads-Up Display''</ref>
*'''[[Visual Intelligence System, Reconnaissance|VISR 4.0]]''': Up to version 4.09, these visor installments are optimized and customized to facilitate specialized tasks.<ref>'''Halo 4''', ''Legendary visor description''</ref> VISR 4.0 is capable of managing a Spartan's disparate sensor feeds, battlenet links, and suit diagnostic messages.<ref>'''Halo 5: Guardians''', ''Recruit visor description''</ref>
*'''[[Force-multiplying circuit]]s''': Allows the user greatly enhanced reflexes and strength, improving mobility and combat effectiveness in close quarters. Notwithstanding the lack of any truly understood limitations, Spartans have been recorded lifting Warthogs, bending steel, and shattering concrete on the battlefield.<ref>'''[[Halo: Official Spartan Field Manual]]''', page 37</ref>
*'''[[Motion tracker]]''': Shows movement of friendly and enemy units within the system's radius.
*'''[[Pressure seal]]''': The pressure seal is a vital component to the MJOLNIR system, it keeps the system airtight, underwater or in space. The seal is very strong and will only break under extreme pressure, such as in a high velocity impact or when the hydrostatic gel has been over pressurized.
*'''[[Support upgrades]]''': These customized and specialized upgrades allow combat advantages by modifying the core and periphery systems of GEN2.{{Ref/Reuse|H4}}
*'''Sprint module''': Unlike previous armor systems, Mjolnir GEN2 has a built-in sprint module that allows the user to run at faster speeds by overriding safety protocols.{{Ref/Reuse|O+A}} It is functionally similar to the version developed by [[Catherine-B320]] of [[NOBLE Team]], which saw widespread deployment across [[Reach]] in the planet's final days.<ref>''Halo: Reach'' game manual</ref>
*'''[[Tactical packages]]''': These customized and specialized packages allow combat advantages by modifying the core and periphery systems of GEN2.{{Ref/Reuse|H4}}
*'''Titanium nanocomposite bodysuit''': Sandwiched between the external armor and the internal padding is a thick armored bodysuit. The bodysuit is made of a nonrigid titanium-based material, making it very strong and yet very flexible. The suit has numerous functions, small but vital to the safety and survival of the wearer. It also serves as another layer of protection against ballistics attacks and is coated with a heat-resistant material to disperse heat from [[plasma weaponry|plasma weapons]]. Many components of the GEN2's titanium bodysuit are conspicuously fashioned after the shape of human musculature; this was less prominent in previous Mjolnir generations. In fact, each techsuit is custom-made for the Spartan that wears it.<ref name="Techsuit info">[https://content.halocdn.com/media/Default/community/blogs/h5_cos_techsuit_female-c418e8df93ef422c97c743046ca8d5c8.jpg ''Halo 5: Guardians'' Female Spartan Techsuit profile]</ref> Some models have portions of the bodysuit share their color with the external armor plating, though completely black bodysuits are still common.{{Ref/Reuse|H4}}<ref name="H5G">'''[[Halo 5: Guardians]]'''</ref> Certain fireteams or individual operatives are outfitted with customized techsuits that contain a host of undisclosed improvements or modifications to fit particular mission parameters or operator need.{{Ref/Reuse|fowl}} These polymuscle exoskeletons cannot be worn by unaugmented personnel, as many of the techsuit's medical and environmental control systems require invasive access to Spartan cybernetic implants. The techsuit is comfortable to wear for extended periods of time and constitutes the base of Spartans' service uniform, though it provides limited ability enhancement without access to external power. When paired with the compact fusion reactor and shield generators in a Mjolnir cuirass the full capabilities of the techsuit are unlocked. It contains channels and distribution webbing for regenerative energy shielding and the exoskeleton musculature can operate at full power, further increasing the wearer's agility and raw strength.{{Ref/Reuse|Techsuit info}}
*'''Integrated thruster system''': GEN2 suits are equipped with an array of shoulder- and back-mounted thrusters, increasing a Spartan's mobility in the field and presumably in vacuum environments.<ref name="h5mpb bts">[https://www.youtube.com/watch?v=k96NK5moXyg '''YouTube''': ''Halo 5: Guardians Multiplayer Beta: Behind the Scenes'']</ref> The system, which was added as part of a series-wide update, partly alleviates the need to use an external thruster unit or jetpack; however, it provides only limited thrust and as such does not fully replace external thrust apparatuses.<ref>[https://www.halowaypoint.com/en-us/universe/tech/jetpack '''Halo Waypoint''': ''UNSC Jet Pack'']</ref> It is still powerful enough to allow the user to hover a few seconds in mid-air when activated in a stabilizing arrangement. Integrated thrusters saw use in combat as early as [[2553]].<ref>'''[[Halo: Lone Wolf Issue 4]]'''</ref>
*'''Auto-repair and bypass nodes''': Any damage that the armor plating suffers can be repaired by built-in, triply-redundant subsystems. These systems are receptive to nanomachines facilitating the repair.<ref name="ScienceOfHalo">[http://www.youtube.com/watch?v=QjswoU39AOY '''YouTube''': ''The Science Behind The Halo Series'']</ref> Additionally, bypass channels allow certain components to function if routing is compromised by extensive damage. Both these systems can fail, resulting in "scarred" armor plating.<ref name="H5GScarred">'''[[Halo 5: Guardians]]''', ''Scarred Mjolnir Mark VI description''</ref>

==Trivia==
*All non-essential Spartan-IV [[NPC]]s in ''Halo 4'' wear the full Recruit armor set and [[Visor color#Halo 4|visor color]]. Steel serves as their suits' primary color and gold is the secondary color. [[Jared Miller]] also wears this configuration in ''[[Spartan Ops]]''.

==Gallery==
{{Linkbox|gallery=yes|gallerypage=Images of MJOLNIR (GEN2)}}
<gallery>
File:H4-Concept-Undersuit-Male.jpg|Concept art of the Mjolnir [GEN2] skinsuit for male wearers for ''Halo 4''.
File:H4-Concept-Undersuit-Female.jpg|Concept art of the female [GEN2] skinsuit.
File:SpartanOpsArmor1.gif|Armoring process for boots and gauntlets (Click to animate).
File:SpartanOpsArmor2.gif|Chest (Click to animate).
File:SpartanOpsArmor3.gif|Shoulders and helmet (Click to animate).
File:H4-Selecting Ordnance Speed 02.jpg|The HUD of the [GEN2] armor.
File:H4-Wraparound-3.jpg|Two [[MJOLNIR Powered Assault Armor/Soldier|Soldier]]-clad Spartan-IVs engaged in an [[War Games]] match on [[Haven]].
File:H4-SpartanOps-WatcherCrawler.jpg|Shields flaring on two [GEN2] suits during the [[Requiem Campaign]].
File:Spartan Ops - GG 2.jpg|A slightly different HUD. Armor bays and technicians can be seen.
File:H4 SOS1E1 Spartan IV Hologram.jpg|[[Fireteam Majestic]] wearing [GEN2] skinsuits.
File:Spartan Ops - GG 1.jpg|Spartan-IVs in their armor bay.
File:Majestic - 2.png|Fireteam Majestic in their [GEN2] armor.
File:AllGEN2.png|All the [GEN2] armor in ''Halo 4'' at launch.
File:SPARTAN-IV - Halo 5 Training Simulation.png|Spartan-IVs utilizing several variants in preparation for War Games in ''Halo 5: Guardians''.
File:H5 Ground Pound.jpg|A red [[MJOLNIR Powered Assault Armor/AA variant|Air Assault]]-clad Spartan-IV attacking a blue [[MJOLNIR Powered Assault Armor/Recruit|Recruit]]-clad Spartan-IV with a [[Spartan abilities|ground pound]] during a War Games match on [[Regret]].
File:H5-Empire-Beta-6.jpg|Integrated thrusters briefly levitating the user. Note the jets emanating downward from thrusters both in the back and the front.
File:H5G ArmourVariants Render.jpg|Renders of GEN2 suits in ''Halo 5: Guardians''.
File:H5-Spartan-Customization.png|A multitude of customized GEN2 suits.
File:H5G-Techsuit male.jpg|The GEN2 male techsuit.
File:H5G-Techsuit female.jpg|The GEN2 female techsuit.
File:H5G - Techsuit hands.jpg|GEN2 techsuit hands.
File:H5G-Shoes.png|GEN2 by October 2558 featured a thruster on each boot.
</gallery>

==List of appearances==
*''[[Halo 3]]'' {{C|''Halo: The Master Chief Collection'' only}}
*''[[Halo 4]]'' {{1st}}
**''[[Spartan Ops]]''
**''[[Infinity Briefing Packet]]''
*''[[Halo: Spartan Assault]]''
*''[[Halo: Initiation]]''
*''[[Halo: Escalation]]''
*''[[Halo 2: Anniversary]]'' {{C|only featured in the cutscene with Agent Locke and the Arbiter}}
*''[[Halo: New Blood]]''
*''[[Hunt the Truth]]''
**''[[All Hail]]''
**''[[The Cost]]''
**''[[Hunt the Signal]]''
**''[[A Hero Falls]]''
**''[[The Hunt Begins]]''
*''[[Halo: Spartan Strike]]''
*''[[Halo: Hunters in the Dark]]''
*''[[Halo: The Fall of Reach - The Animated Series]]''
*''[[Halo 5: Guardians]]''
**''[[Halo 5: Guardians Limited Edition dossiers|Limited Edition dossiers]]''
*''[[Halo Mythos]]''
*''[[Halo Fractures]]''
**''[[Rossbach's World (story)|Rossbach's World]]''
*''[[Halo: Tales from Slipspace]]''
**''[[On the Brink]]''
*''[[Halo Wars 2]]''
*''[[Halo: Envoy]]'' {{Im}}
*''[[Halo: Legacy of Onyx]]''
*''[[Halo: Bad Blood]]''
*''[[Halo: Official Spartan Field Manual]]''
*''[[Halo: Lone Wolf]]''
*''[[Halo: Renegades]]''
*''[[Halo Infinite]]'' {{C|Poster only}}
*''[[Halo: Outcasts]]''

==Notes ==
{{Ref/Notes}}

==Sources==
{{Ref/Sources|2}}

{{Armor|Human}}
{{Navbox/Universe/Mjolnir|Overview|GEN2}}
[[Category:MJOLNIR armor]]