ORBITAL-class Mjolnir

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ORBITAL-class Mjolnir is a variant of the MJOLNIR Powered Assault Armor [GEN2] manufactured by Naphtali Contractor Corporation.

Specifications
The helmet includes a Buffalo A-29 comm suite, which works flawlessly with the ad-hoc and anarchic telecommunication networks found in many colonies. Some models of the helmet have the "Mark of the Breaker" skull emblazoned on the visor.

The suit has momentum-governing collar mounts, a valence-fading blast shield, L4-0 braced generators, and tow-grip isolation packs for quick yet stable mobility in zero-g settings.

Development history
Developed by the Naphtali Contractor Corporation, the Orbital variant was tested and was the first to survive the Buffalo Breaker Yards testing site. This granted some models of the helmet a distinct skull emblem, known as the "Mark of the Breaker", on the visor.

The suit is a modified variant following the same production lines as the EVA-class Mjolnir, though it was developed specifically for orbital and suborbital combat, where conditions similar to space often converge with harsh atmosphere and gravity-borne challenges.

It was also field-tested during the battles in the skyhooks and space elevators on Earth and Luna during the Battle of Earth. This test was a success, leading to the Orbital-class armor's adoption by Spartan-IVs.

Usage
Adoption of this set has not overtaken the EVA variant, although War Games has repeatedly proven the Orbital armor's viability.

Patrolling Spartans equipped with ORBITAL-class Mjolnir armor are a common sight near Earth's orbital tethers and military space stations.

Halo 4
Available skins: Aeon (AEON) and Swift (SWFT) Default unlock: Spartan Rank 41. Aeon unlock: Complete the Covenant Destroyer - Master commendation. Swift unlock: Enter the final classified code on the Xbox 360's Halo Waypoint app.
 * Description: Used along Luna's Skyhooks and tethers during the Covenant's assault on Sol.

MCC descriptions

 * Helmet description: Prototypes were rushed into use during the Covenant's assault on Sol.
 * Shoulder description: Modular left/right spaulder from Orbital-class armor.
 * Chest description: The collar features integral momentum-governors.

Halo 5: Guardians
Available skins: Aphelion, Equinox, and Perihelion Default unlock: Uncommon REQ card Perihelion unlock: Rare REQ card Aphelion unlock: Ultra Rare REQ card Equinox unlock: Legendary REQ card
 * Helmet description: The Buffalo A-29 comm suite in the ORBITAL helmet works flawlessly with the ad-hoc and anarchic telecommunication networks found in many colonies.
 * Body description: Patrolling Spartans equipped with ORBITAL-class Mjolnir armor are a common sight near Earth's orbital tethers and military space stations.

In Halo 5: Guardians due to the "Body" having a predefined customisation this armor set permanently has the following parts from Halo 4:
 * Body: Orbital
 * Shoulders: Orbital
 * Forearms: Twin-plated
 * Legs: Recruit

Trivia

 * The Orbital helmet's human skull painted onto the visor in Halo 4 is similar to Emile-A239's EVA [C] helmet.
 * The skins in Halo 5: Guardians all refer to positions of planets in relation to the sun. Perihelion is closest, aphelion is farthest, and an equinox is when day and night are equal in length.

List of appearances

 * Halo 4
 * Infinity Briefing Packet
 * Halo 5: Guardians
 * Halo Mythos