LOCUS-class Mjolnir

LOCUS-class Mjolnir is a variant of the MJOLNIR Powered Assault Armor [GEN2] manufactured by Lethbridge Industrial.

Design details
The LOCUS helmet has a heavily armored case-locked visor system that relies on multiple visual feeds. It also has an interlocking helmet soft-mesh loosely based on Covenant armor technology, and R4-100 dial audio sensors used for noise tracking.

Development history
The Locus variant was manufactured by Lethbridge Industrial. Tested at the Lethbridge Combat Fields, the armor system is a contemporary stealth kit conceived specifically for tactical and strategic infiltration with focus on survivability and durability. Despite its exotic design, the primary differential from similar systems is its incredible durability in the field.

Lethbridge also tested the armor for both resiliency and its attention to stealth and anti-security measures outside the megacity of Lethbridge on Concord in a number of heavily secured facilities lying across Corsica's hardscrabble northern outskirts. These tests confirmed that Locus was fully able to survive extreme opposition and firepower.

Usage
Most operators choose this suit due to its resiliency.

Halo 4
Unlock: The helmet was a pre-order bonus through MightyApe.co.nz or HMV.com. It is also available in the Halo 4 Game of the Year Edition.
 * Description: Despite its exotic design, most operators select this armor based on its resiliency.

MCC descriptions

 * Helmet description: Exotic and resilient. Often leveraged by Headhunter units.

Halo 5: Guardians
Available skins: Edge Default unlock: Legendary REQ card Edge unlock: Legendary REQ card
 * Helmet description: The LOCUS' passive cyberintrusion package and battlenet cache allows the user to stay aware of the strategic situation while remaining invisible to any hackers in the network.
 * Body description: Designed to provide an answer to threats arising during assaults on heavily defended tactical nodes, the grim visage of LOCUS armor is a common sight among Spartan boarding parties and special responses teams.

In Halo 5: Guardians due to the "Body" having a predefined customisation this armor set permanently has the following parts from Halo 4:
 * Body: Aviator
 * Shoulders: Aviator
 * Forearms: GV-09 Locking
 * Legs: Contoured

Trivia

 * In Halo 4, Locus is one of four helmet-only armor sets alongside the Deadeye, Scanner, and Strider helmets.
 * In Halo 4's full body renders, and Halo: The Master Chief Collection, the Locus armor is the same as the Recruit armor.
 * The body of the Locus armor in Halo 5: Guardians is the same as the Aviator armor.
 * The head of a Hive Thrall (an enemy from Bungie's game Destiny), bears a striking resemblance to the Locus armor's helmet.
 * The Locus helmet is used as the base for the Yokai helmet on the "Fractures: Tenrai" event in Halo Infinite.

List of appearances

 * Halo 4
 * Halo 5: Guardians
 * Halo Mythos: A Guide to the Story of Halo