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This article is about the MJOLNIR variant. For other articles including "ODST", see ODST (disambiguation).
GEN1 Mark VI
HTMCC H3 ODST Crop.png
GEN1 Mark V
B-class Mjolnir with ODST helmet, chest piece, and shoulders from Halo: Reach armor permutation in Halo: The Master Chief Collection menu.
Production overview


Cascade Stronghold Technologies[1]

Testing site(s):

Mindoro, Lhopat, Cascade[1]



MJOLNIR (GEN3) (Compatible)[5]


Special forces gear

Technical specifications



ODST MJOLNIR armor is a MJOLNIR Powered Assault Armor variant based on the venerable ODST armor, updated for compatibility with various powered armor systems.

GEN1 overview[edit]

Design details[edit]

On the GEN1 platform, ODST usage with MJOLNIR largely consists of standard shoulder pauldrons and chest plate on top of the default MJOLNIR Mark V (B) MJOLNIR.[2] The ODST helmet, however, is compatible with both the Mark V[2] and Mark VI systems, seeing the use of many technologies initially developed for the MJOLNIR program.[3] The ODST helmet on the Mark V (B) platform can support the AN/PCK-221 FARNDALE and AN/PZY-6011Y TYPHON Command Network Modules, a MK55 CBRN module or a Type O5 UA module.[2] As late as 2560, GEN1 ODST could still be requisitioned by Spartans, upgraded to be roughly equivalent to GEN3.[6][5]

GEN2 overview[edit]

Design details[edit]

For MJOLNIR Powered Assault Armor (GEN2), the ODST armor was given extensive treatment by Cascade Stronghold Technologies at their test site at Mindoro, Lhopat, Cascade.[1] Almost inevitably due to the high numbers of former-ODST personnel within the Spartan Operations branch, the first-generation MJOLNIR/ODST variant was updated for compatibility with MJOLNIR (GEN2). Despite considerable differences from the standard version of the armor, the system contains many features expected of Special Forces gear, making it desirable for use by former ODSTs.[7]

The GEN2/ODST variant shares several design elements with its predecessor, though it also sports several changes. It still uses the standard helmet and shoulder pauldrons; it also features upgraded versions of the Mark 117 chestplate and the M/LBE Hard Case. However, the chestplate covers more of the torso below the thoracic cavity. The rest of the armor, including the greaves and cuisses, gauntlets, and boots, is more closely derived from the regular MJOLNIR (GEN2) milieu.[4]


A number of similar armor systems based on the ODST set exist on the GEN2 platform;

GEN3 overview[edit]


At least one ODST derived helmet exists on the GEN3 platform;

  • FIREFALL-class Mjolnir - The first component in an ensemble that aims to eliminate the need for drop pods in Spartan orbital insertions.

In-game information[edit]

The MJOLNIR Mark VI with the ODST helmet in Halo 3.

Halo 3 - Mark VI[edit]

The ODST helmet is available as an armor permutation in Halo 3 multiplayer. The Spartan version of the helmet differs from the standard version in the polarization color of its visor; regular ODST helmets have bluish-silver polarization, while the MJOLNIR ODST helmet retains the gold electroplating possessed by most MJOLNIR armor.[3] In The Master Chief Collection, the ODST helmet (like all helmets) can use any of the visor colours introduced in Season 3.

Helmet Description Unlock requirements (Halo 3) Unlock requirements (Halo: MCC)
HTMCC H3 ODST Menu Render.png
Helmet: Many technologies initially developed for Project: MJOLNIR have gained widespread adoption; the use of CTCs for body armor and helmet-integrated neural interfaces being the most visible. Reach the rank of H3 Rank Private Icon.svg Private (Spartan Graduate) Unlocked by default.
MCC: Many technologies initially developed for Project: MJOLNIR have gained widespread adoption.

Halo: Reach - Mark V[edit]

"The ODST helmet is one of the most recognizable faces of the UNSC's Special Forces."

In Halo: Reach, two upgrades are available for the helmet. The first, (UA/CNM), adds an up-armor plate with a Command Network Module on the left side, and the second, (CBRN/HUL), adds a Chemical, Biological, Radiological, and Nuclear Module with a Hardened Uplink Module on the right side. The shoulder pauldrons, breastplate, and helmet of the ODST armor are also available for purchase in the Armory. Unlike in Halo 3, the ODST armor can be used in all game modes.

Armor Description Unlock requirements (Halo: Reach) Unlock requirements (Halo: MCC)
HR ODST Helmet Icon.png
Many technologies initially developed for MJOLNIR have gained widespread adoption. Halo: Reach rank icon Recruit, 2,000 cR Series 1, Tier 19 (Spartan Point 1)
HR ODST UACNM Helmet Icon.png
Up-armored variant with Command network module. Halo: Reach rank icon Corporal, 1,000 cR Series 1, Tier 19 (Spartan Point 1)
HR ODST CBRNHUL Helmet Icon.png
For operations in hazard zones; hardened uplink module. Halo: Reach rank icon Sergeant, 500 cR Series 1, Tier 38 (Spartan Point 1)
HR ODST LShoulder Icon.pngHR ODST RShoulder Icon.png
ODST shoulders
Many technologies initially developed for MJOLNIR have seen widespread adoption. Halo: Reach rank icon Captain, 25,000 cR Series 1, Tier 46 (Spartan Point 1)
HR ODST Chest Icon.png
ODST chest
Many technologies initially developed for MJOLNIR have seen widespread adoption. Halo: Reach rank icon Warrant Officer, 750 cR Series 1, Tier 41 (Spartan Point 1)

Halo 4 - GEN2[edit]

Piece Description Unlock requirements (Halo 4) Unlock requirements (Halo: MCC)
HTMCC H4 ODST Helmet Icon.png
Description (H4 and MCC):Quite possibly one of the most thoroughly tested armor systems across the entire UNSC.

MANUFACTURER: Cascade Stronghold Technologies

Purchase the Infinity Armor Pack. Series 7 Tier 68, Spartan Point 1
HTMCC H4 ODST Chest Icon.png
Series 7 Tier 80, Spartan Point 1
HTMCC H4 ODST RShoulder Icon.pngHTMCC H4 ODST LShoulder Icon.png
Series 7 Tier 97, Spartan Point 1
HTMCC H4 ODST Forearm Icon.png
Series 7 Tier 88, Spartan Point 1
HTMCC H4 ODST Leg Icon.png
Series 7 Tier 94, Spartan Point 1

Halo Infinite - Upgraded GEN1 and Rakshasa[edit]

The Mark V ODST helmet and its attachments are available for multiplayer Spartan armor customization on the Mark V [B] armor core in Halo Infinite. The ODST chest is available under the UA series of chest attachments. The ODST shoulders are available under the SAP series of shoulder pads. A different kind of salvaged ODST chest piece is available under the Rakshasa core.

Helmet Manufacturer Lore Rarity Unlock Requirements
Season Pass Icon
Cascade Stronghold Technologies Initially developed for use on MJOLNIR powered assault armor, the ODST-pattern of helmet was widely adopted by UNSC special forces, albeit in a cost-reduced form. Epic Season 01: Heroes of Reach Battle Pass level 65 (Premium)
Season Pass Icon
Cascade Stronghold Technologies Even MJOLNIR armor can do with a bit of reinforcement from time-to-time. Rare Season 01: Heroes of Reach Battle Pass level 67 (Premium)
Season Pass IconSeason Pass Icon
Cascade Stronghold Technologies These armor pieces were created for MJOLNIR, but eventually became viable for mass production and deployment to other UNSC forces. Rare
  • Left: Season 01: Heroes of Reach Battle Pass level 62 (Premium)
  • Right: Season 01: Heroes of Reach Battle Pass level 63 (Premium)
Icon of the UA/SACRIFICE chest
UNSC In desperate times, intact wargear of fallen friends and allies must be turned to the immediate needs of survival and victory. Rare Purchase "UA/SACRIFICE" Bundle from the Shop for 200 cR



Halo 3[edit]

Halo: Reach[edit]

Halo 4[edit]

Halo Infinite[edit]

List of appearances[edit]