EOD-class Mjolnir

The MJOLNIR Powered Assault Armor/EOD variant, more commonly known as Explosive Ordnance Disposal Armor, and abbreviated as EOD Armor, is a variant of the Mark IV, Mark V, Mark VI and GEN2 MJOLNIR Powered Assault Armor systems.

GEN1
The MJOLNIR/EOD variant was originally created at the UNSC Damascus Materials Testing Facility on Chi Ceti 4. The EOD variant is speculated to have been developed in response to the death of Samuel-034 (the first Spartan killed in action) in November 2525. The helmet was designed to channel the pressure wave of a nearby detonation around the user's head, significantly reducing the likelihood of decapitation in the event of an explosion. The MJOLNIR/EOD variant's pauldrons and chest plate were designed specifically to reduce the number of grabbing edges on the armor, decreasing the likelihood of dismemberment and protecting Spartans during operations that involve the handling of explosive ordnance (e.g., clearing/planting land mines, demolishing enemy structures/material and, or planting/defusing bombs).

GEN2
In 2554, Abilene's Naphtali Contractor Corporation took control over the EOD armor's production. It was tested at the Buffalo Breaker Yards in Abilene, Texas.

Helmet
Unlock: Unlock the Campaign Complete: Legendary achievement.
 * Description: The Mjolnir/EOD variant was created at UNSC facilities on Chi Ceti 4. The helmet was designed specifically to channel the pressure wave around the user's head, significantly reducing the likelihood of decapitation.

Shoulder pauldron
Unlock: Complete The Ark on Legendary difficulty.
 * Description: Developed at the UNSC Damascus Materials Testing Facility on Chi Ceti 4, the Mjolnir/EOD variant was designed specifically to reduce the number of grabbing edges on the armor, decreasing the likelihood of dismemberment.

Chest
Unlock: Complete Tsavo Highway on Legendary difficulty.
 * Description: This variant was designed specifically to protect Spartans during operations involving the handling of explosive ordnance (e.g., cleaning/planting land mines, demolishing enemy structures/materiel).

Halo: Reach(Mark V Variant)
Developed at the Damascus Materials Testing Facility on X Ceti 4; entered service in 2531. Base Price: 15,000 cR, Sergeant CNM Price: 5000 cR, Sergeant UA/HUL: 3000 cR, Sergeant
 * Description: Designed specifically to reduce likelihood of decapitation.
 * Description: Command network module; standard issue to UNSC Special Forces unit commanders.
 * Description: Up-armored variant with hardened uplink module for MILINT acquisition.

Halo 4 (Gen 2)
Unlock: Achieve Spartan Rank 45 Available skins: SHDW(Shadow)
 * Description: Abilene's NCC took over production of this Mjolnir kit in 2554.
 * The SHDW skin is obtainable by completing the Regicide Victory - Master commendation.

Trivia

 * Bungie Armor is a slight variation of the EOD chestplate. Bungie Armor lacks the three mid-level lights and has an effect that causes flames to appear around the helmet.
 * The EOD chest plate bears a very striking resemblance to the armor design of the MJOLNIR Mark V armor's chest plate from Halo: Combat Evolved. Because of this, many players use it in conjunction with the Mark V helmet and Mark VI shoulders to create an improvised version of the original Mark V armor from Halo: Combat Evolved.
 * The EOD chestplate in Halo 3 somewhat resembles the Default chestplate seen in Halo: Reach.
 * The UA/HUL attachment makes the helmet look similar to the Rogue helmet seen in Halo 3, by removing the air filters.
 * According to a Bungie poll, EOD is currently the 5th most popular helmet variation in Halo Reach.
 * The rebreathers featured on this helmet are similar to the CBRN attachements available for the Security and GUNGNIR helmets.
 * The Caduceus emblem that appears on the Mark V EOD helmet also appears on med packs, Army medics, and the Tactical/Trauma Kit armor permutation. This suggests that the EOD may also have an intended secondary role to provide medical assistance to wounded allies in dangerous situations. It's possible that there may be a non-MJOLNIR variant of the helmet for use by UNSC medical personnel, likely in toxic environments where the distinctive CBRN would aid in operations.

List of appearances

 * Halo 3
 * Halo: Reach
 * Halo: Fall of Reach
 * Covenant
 * Invasion
 * Halo 4
 * Halo Online