Reclaimer - H4.png

OPERATOR-class Mjolnir

From Halopedia, the Halo wiki

This article is about the MJOLNIR armor variant. For the fragment of the AI Melissa, see Operator.
Production overview


Chalybs Defense Solutions (GEN1)[1]
Naphtali Contractor Corporation (GEN2)[2]

Testing site(s):

Beta-5 Division Ordnance Testing Facility (GEN1)(Development)[3]
Chalybs Testing Preserve (GEN1)[1]
Buffalo Breaker Yards (GEN2)[2]





  • Special operations (GEN1)
  • Vehicle operation (GEN2)

OPERATOR refers to two distinct variants of Mjolnir armor. The GEN1 Operator variant, originally designed by Chalybs Defense Solutions,[1] was designed for special forces within Beta-5 Division's Asymmetrical Action Group; while the GEN2 permutation designated Operator, manufactured by the Naphtali Contractor Corporation, is optimized for the operation of vehicles.[4]

GEN1 overview[edit]


The Mark V variant of the armor was designed for use by Spartan operators within the ONI Beta-5 Division's Asymmetrical Action Group (AAG).[1][3] The standard version of the helmet features a B5D-O/Optics suite,[1] which is mounted on the forehead. The UA/HUL variant replaces the standard optics suite with an up-armor plate featuring a Hardened Uplink Module on the left side. Another variant, which is issued to unit commanders,[3] features Command Network Module-Improved on the right side. The Operator systems's shoulder pauldrons are simply armored bands mounted on the user's base shoulder guards, with two string-like attachments descending from the bottom. There is a geometrical pattern emblazoned on the plate as well.

After the first wave of GEN2 systems, based on requests of veteran Spartan-II and Spartan-III operatives, the UNSC Ordnance Commission considered reassessing a refined and upgraded version of the Mark V EVA-class Mjolnir, specifically the customized suit worn by Emile-A239 complete with the death's head engraving on the visor. This led to the creation of the WRATH-class Mjolnir with the left shoulder pad based off the Mark V Operator's shoulders.[5]

Development history[edit]

While the non-Spartan members of the Asymmetrical Action Group wear their own standard-issue armor, the Beta-5 Division contracted Chalybs Defense Solutions to develop a MJOLNIR variant designed to improve the performance of the AAG's Spartan personnel. The armor, which was jointly developed at the Beta-5 Division Ordnance Testing Facility and tested at Chalybs Testing Preserve,[note 1] can provide the wearer with detailed, on-the-fly intelligence through secure transmissions that can bypass most Covenant security networks.[1]

GEN2 compatibility[edit]

Following the Human-Covenant War, the GEN1 Operator helmet has been forced out of its former secrecy within Beta-5. Available in limited numbers with Spartan Operations personnel, the helmet can be requisitioned for use with the Spartans' GEN2 armor.[6]


The Mark IV variant of the armor was worn by Joshua-029 during the Battle of Sigma Octanus IV.[7]

GEN2 overview[edit]


The reactor of the GEN2 version of the OPERATOR armor is a low-set reactor pack. The helmet has a PV-20, which is a set of dual-locked rebreathers generally worn by pilots.[2] The visor has an open visor view-plate for increased range of spectrum, with sensor fusion software that ties the info into the visor to be finalised.[8] The chest has external harness bracers. Twin-release cables on the chest route energy expenditure to reserve systems.[2]

Development history[edit]

Sometime after the Fall of Reach, the Operator armor was taken over by the Naphtali Contractor Corporation, after the abandonment of all CDS facilities on Meridian,[9] and was tested extensively with live fire exercises in the NCC's abandoned shipyards on the outskirts of Abilene.[4] Unlike its predecessor, it optimizes a Spartan for the operation and control of vehicles.[10]


Operator armor has proven itself an adaptable combat ensemble in Spartan service, utilized by both pilots and force reconnaissance operatives.[8]

In-game information[edit]

Halo: Reach[edit]


Developed exclusively for the ONI's Beta-5 Asymmetrical Action Group.
Base cost: 7,000 cR, Sergeant

  • Description: The B5D Facility has been the site of many unique development programs

UA/HUL cost: 2,500 cR, Sergeant

  • Description: Up-armored varient with hardened uplink module for MILINT acquisition.

CNM cost: 1,000 cR, Sergeant

  • Description: Command network module; standard issue to UNSC Special Forces unit commanders.


Cost: 28,000 cR, Commander

  • Description: Developed for the Beta-5 Asymmetrical Action Group at ONI's Ordnance Testing Facility.

Halo 4[edit]

Available skins: Surface (SRFC)
Default unlock: Obtained by achieving Spartan Rank OP-4.
Surface unlock: Obtained by achieving Spartan Rank OP-9.

  • Description: Tested in the NCC's adandoned shipyards on the outskirts of Abilene.

MCC descriptions[edit]

  • Helmet description: Tested in abandoned shipyards on the outskirts of Abilene.
  • Shoulder description: Modular left/right spaulder from Operator-class armor.
  • Chest description: Suits used outside of Beta-5 have some classified features disabled.

Halo 5: Guardians[edit]


Unlock: Rare REQ card

  • Helmet description: Asymmetrical Action Groups are cross-branch special forces teams that deter, disrupt, and defeat novel threats to the UNSC. Forced out of the shadows, the OPERATOR [GEN1] helmets worn by these specialists has become available in limited numbers.


Unlock: Rare REQ card

  • Helmet description: OPERATOR visor plates include hyperspectral optical sensors, though the sensor fusion software that would tie that information into VISR has yet to be finalized.
  • Body description: OPERATOR armor has proven itself an adaptable combat ensemble in Spartan service, utilized by both pilots and force reconnaissance operatives.

In Halo 5: Guardians due to the "Body" having a predefined customisation this armor set permanently has the following parts from Halo 4:


  • The helmet looks very similar to an updated concept of the MJOLNIR armor drawn by Eddie Smith which is featured in The Art of Halo.
  • Although the Operator armor is used solely by the Asymmetrical Action Group, Emile-A239 wore an Operator shoulder piece on his left shoulder.
  • In Halo Online's pre-alpha the PILOT-class Mjolnir used this design for its armor.


Normal gallery[edit]

Halo 4 skins[edit]

Halo 5: Guardians skin[edit]

List of appearances[edit]


  1. ^ According to the Armory in Halo: Reach, the Operator armor was developed at the Beta-5 Division Ordnance Testing Facility. According to Halo: The Essential Visual Guide, the armor was developed by Chalybs Defense Solutions and was tested at Chalybs' Testing Preserve. The article assumes that the two organizations jointly developed the armor.