MJOLNIR Powered Assault Armor/Mark V[B]

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SPARTAN-B312 wearing the standard Mark V[B] helmet.

The MJOLNIR Powered Assault Armor/Mark V[B] is a variant of the Mark V MJOLNIR Powered Assault Armor.


Along with the Mark V[M] and Mark VI[A] variants, the Mark V[B] is designed and manufactured by private organizations hired by the UNSC rather than developed by the UNSC specifically, due to numerous problems with funding. On November 24, 2551, the initial Mark V model entered service; the Mark V[B] was given exclusively to members of SPECWAR Group Three. Thom-293 of NOBLE Team wore a full set of Mark V[B] armor.[1]

The Mark V[B] helmet's external design can be traced back to a variant of the first-generation Mark IV. Fred-104 wore such a helmet during the Battle of Circinius IV in 2526.[2] Similarly, the original Mark IV helmet was later modified for the second-generation Mark V and another Mark IV variant served as the basis of the Mark VI.

Gameplay characteristics[edit]

The helmet is the only component of the Mark V[B] that has been named and identified in the armory. The rest of the default suit of armor is the first generation of the Mark V with the second and final generation of the Mark V seen in Halo: Combat Evolved.[3]


Price: N/A (Default)
The Mark V[B] helmet is similar to the standard Mark V MJOLNIR Powered Assault Armor, with a few key differences. The helmet has a sleeker design, resembling both the standard Mark V helmet and the ODST helmet, and seems to be somewhat of a combination of the two. Whilst the rear of the helmet is similar to the Mark V, the front strongly resembles the ODST helmet's triangular jaw guard and rounded top, with a flatter visor shape.

This helmet is the starting helmet for all players, and is purchased and equipped by default. Currently, there are two upgrades available for the Mark V[B] helmet; the UA (up-armored) upgrade for 750 cR (This is a combination of both of the Beta upgrades); and the UA/HUL, for 1500 cR, which adds an External Hardened Uplink to the right side of the helmet, redesigned from the Beta.


  • In the Halo: Reach Multiplayer Beta, there were two upgrades available for the Mark V[B] helmet. An External Command Network Module or "CNM", standard issue to Special Forces unit commanders (1000 cR), and an External Hardened Uplink or "HUL", required for sensitive operations (5000 cR).[4] The CNM and HUL attachments as seen in the Beta were merged into a single attachment, the UA upgrade, for the final game. The HUL is now an additional camera/sensor-like attachment on the side of the helmet, rather than being located on the top.
  • While both the Mark V[B] and FJ/PARA shoulder pauldrons were present in the Halo: Reach Multiplayer Beta, the Mark V[B] shoulders were changed to the FJ/PARA variant in the final game. Currently, the Mark V[B] has no shoulder pauldron permutations.[5][6]
  • The UA attachment from the beta strongly resembles the classic MJOLNIR sun visor, seen on both the Mark V and Mark VI helmets.
  • In the marketing campaign for Halo: Reach, an exclusive armor piece would be given to players who pre-ordered the game. During this time the armor piece was known as the "UA/Multi-Threat Mark V[B]." Any relation of this armor piece to the Mark V [B] is absent in the game.
  • In Halo 4: Forward Unto Dawn, Fred-104's helmet resembles the Mark V[B]'s. In the real world, this is because the production team reused Thom-293's Mark V[B] helmet from the Deliver Hope short.


List of appearances[edit]


  1. ^ In Halo 4: Forward Unto Dawn, Kelly and Fred's Mk. IV MJOLNIR suits appear to be repurposed from the Mk. V MJOLNIR props used in the Deliver Hope short; Kelly appears to be wearing a modified and repainted version of Kat's AA helmet, whereas Fred appears to be wearing Thom's Mk. V [B] helmet. These design choices are likely examples of artistic license and/or budget constraints.


  1. ^ Deliver Hope
  2. ^ Halo 4: Forward Unto Dawn
  3. ^ Halo: The Essential Visual Guide, page 119
  4. ^ Halo: Reach Multiplayer Beta, Armory
  5. ^ YouTube: Halo: Reach - The Armory Montage