The MJOLNIR Powered Assault Armor System is a technologically advanced combat exoskeleton system designed to vastly improve the strength, speed, agility, reflexes, and durability of a Spartan supersoldier.

The MJOLNIR Powered Assault Armor/Mark VII is the fourth and most recent major iteration of the MJOLNIR Powered Assault Armor [GEN1]. The armor's cost led it to be supplanted by the MJOLNIR [GEN2] line.

The MJOLNIR Powered Assault Armor/Mark VI was the third major version of the MJOLNIR Powered Assault Armor. The last mainline MJOLNIR GEN1 suit to be widely issued, the Mark VI was issued to the few surviving Spartan-II supersoldiers in October...

Developed parallel to the SPARTAN-II program by the Office of Naval Intelligence's Materials Group, the MJOLNIR powered assault armor was a radical redesign from previous large, bulky exoskeletons, streamlining their design into a compact suit of armor practical for use in the field.

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 supersoldiers.

The MJOLNIR Powered Assault Armor [GEN3] is the third system-wide generation of the MJOLNIR Powered Assault Armor. As of 2560, Generation 3 MJOLNIR has been adopted by nearly all active Spartans serving in the United Nations Space Command.

SCOUT-class Mjolnir, also designated as the MJOLNIR Powered Assault Armor/S variant, is a variant of the MJOLNIR Powered Assault Armor that was developed by the Materials Group.

The MJOLNIR Powered Assault Armor/B variant refers to three distinct sub-models of MJOLNIR Powered Assault Armor, created for the Mark IV, Mark V, and Mark VII generations. The second iteration of the [B] variant served as the initial production model …

AIR ASSAULT-class Mjolnir, also designated as the MJOLNIR Powered Assault Armor/AA variant, is a MJOLNIR armor variant originally designed by Ushuaia Armory, with the GEN2 version being manufactured by the Naphtali Contractor Corporation.

GUNGNIR-class Mjolnir, also designated as the MJOLNIR Powered Assault Armor/G variant on the Mark V platform, is a MJOLNIR armor variant originally designed by Misriah Armory, with the GEN2 version being manufactured by Hannibal Weapon Systems, and the GEN3 version being manufactured by Meyer e.V..