Canon

HELLJUMPER-class Mjolnir

From Halopedia, the Halo wiki

This article is about the armor variant. For other articles including "ODST", see ODST (disambiguation).
Helljumper
GEN3
Icon of the "Helljumper" bundle.
GEN2
A render of Edward Buck.
Production overview

Manufacturer(s):

Cascade Stronghold Technologies[1]

Type:

 

HELLJUMPER-class Mjolnir is a variant of the MJOLNIR Powered Assault Armor derived from ODST armor. It is manufactured by Cascade Stronghold Technologies.[1][2]

Overview[edit]

Development history[edit]

The armor is considered to be the pet project of Cascade Stronghold Technologies' current chief executive officer, a former Orbital Drop Shock Trooper.[1]

The armor's helmet was initially created for service in the UNSC Marine Corps, though development delays kept it from consideration by the branch. However, only minor modifications were required to make the HELLJUMPER-class armor's helmet fully compatible with GEN2 Mjolnir armor.[1]

Usage[edit]

A small number of HELLJUMPER-class prototypes have been commissioned and entered service into the Spartan branch under a research partnership between the United Nations Space Command and Cascade Stronghold Technologies. Spartans Edward Buck, Kojo Agu, and Michael Crespo used this armor during Operation: COALPEPPER in August 2555.[3] Edward Buck would continue using the armor up to the Battle of Genesis in October 2558.[1][4]

In-game information[edit]

Halo 5: Guardians[edit]

Helljumper was introduced in Halo 5: Guardians as an armor permutation unlockable via the Requisition system. Like Copperhead, Hunter, and Technician, the armor acts as a pseudo-recreation of Edward Buck's armor within Halo 5's campaign; only lacking the uniquely designed techsuit Buck's variant possesses. It features one solitary skin: Feet First.

Armor Description Rarity Introduced in Unlock requirements
REQ icon for the Helljumper armor.
Helljumper (helmet) 		Though development delays kept it from consideration by the UNSC Marine Corps, only minor modifications were needed to make the HELLJUMPER helmet fully compatible with GEN2 Mjolnir. Mythic Introduced on launch. Purchase a Gold REQ pack for REQ Points 10,000 REQ points.
REQ icon for the Helljumper armor.
Helljumper Feet First (helmet skin)
REQ icon for the Helljumper armor.
Helljumper (body) 		Pet project of Cascade's CEO, a former ODST. A small number of HELLJUMPER prototypes have entered Spartan service under a research partnership between the UNSC and Cascade Stronghold Technology.
REQ icon for the Helljumper armor.
Helljumper Feet First (body skin)

Halo Infinite[edit]

Helljumper would later make a return in an updated form in Halo Infinite, added during the Fall Update's Haloween II Operation on October 28, 2025 in celebration of Halo 5: Guardians' 10th anniversary. It is available both through the Shop and The Exchange. The Helljumper helmet and its associated armor parts are primarily available for the Mark VII armor core.[5]

Visually, the Helljumper helmet is largely identical to its GEN2 iteration in Halo 5: Guardians, with the only difference being that the AI data crystal chip port at the back no longer appears as a bulge.

Armor Manufacturer Lore Rarity Introduced In Unlock Requirements
Field upgrades allow stocks of testbed HELLJUMPER armor to be upgraded for use on GEN3 Mjolnir. (Cascade Stronghold Technologies/Legendary)
Helljumper 		Cascade Stronghold Technologies Field upgrades allow stocks of testbed HELLJUMPER armor to be upgraded for use on GEN3 Mjolnir. Legendary Haloween II

Purchase either:

  • "Helljumper" for 2,000 cR (Shop) or 150,000 SP (The Exchange)
  • "Vault of Osiris" for 3,900 cR
Not cutting edge, but reliable even in degraded signal environments. (Cascade Stronghold Technologies/Legendary)
HUL[4X]/BNR/STONEDOG 		Not cutting edge, but reliable even in degraded signal environments.
Bravery should never outrun discretion. (Cascade Stronghold Technologies/Legendary)
Helljumper Harness 		Bravery should never outrun discretion.
Supplemental deltoid/shoulder armor. (Cascade Stronghold Technologies/Legendary)Supplemental deltoid/shoulder armor. (Cascade Stronghold Technologies/Legendary)
UA/Edla 		Supplemental deltoid/shoulder armor.
Drop-rated. (Cascade Stronghold Technologies/Legendary)
UA/Type 22 Wristguard 		Drop-rated.
Reinforced hardpoint. (Cascade Stronghold Technologies/Legendary)
Connection Lock 		Reinforced hardpoint.
Supplemental leg armor. (Cascade Stronghold Technologies/Legendary)
UA/Type BA 		Supplemental leg armor.

Attachments[edit]

The following attachments are not exclusive to Helljumper, and are compatible with various other helmets across various armor cores.

Gallery[edit]

Main-Superintendent.png Browse more images in this article's gallery page.

Concept art and illustrations[edit]

  • Concept art of Buck's Helljumper armor for Halo 5: Guardians.

    Concept art of Buck's Helljumper armor for Halo 5: Guardians.

  • Buck, Romeo, and Mickey in Helljumper during Operation: COALPEPPER in Halo Mythos.

    Buck, Romeo, and Mickey in Helljumper during Operation: COALPEPPER in Halo Mythos.

  • Edward Buck wearing Helljumper armor in Halo: Bad Blood.

    Edward Buck wearing Helljumper armor in Halo: Bad Blood.

  • Several variations of the Helljumper armor used by Alpha-Nine.

    Several variations of the Helljumper armor used by Alpha-Nine.

Screenshots[edit]

Halo 5: Guardians skins[edit]

  • Default

    Default

  • Back view of the default skin.

    Back view of the default skin.

  • Feet First skin.

    Feet First skin.

  • Back view of the Feet First skin.

    Back view of the Feet First skin.

List of appearances[edit]

Sources[edit]

  1. ^ a b c d e Halo Waypoint, Canon Fodder - Conventional Warfare (Retrieved on Oct 30, 2021) [archive]
  2. ^ Halo 5: Guardians, Armory description
  3. ^ Halo Mythos, page 157
  4. ^ Halo 5: Guardians, campaign
  5. ^ Happy 10th Birthday Halo 5 (Retrieved on Oct 28, 2025) [archive]

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List of armor permutations by game title

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List of armor permutations in Halo 5: Guardians
Achilles • Air Assault • Anubis • Argonaut • Argus • Athlon • Atlas • Aviator • Breaker • Buccaneer • CQB • Centurion • Challenger • Cinder • CIO • Commando • Copperhead • Cyclops • Cypher • Deadeye • Decimator • Defender • Dynast • EOD • Enforcer • Engineer • EVA (GEN1 and GEN2) • Fenrir • Foehammer • FOTUS • Freebooter • Goblin • GUNGNIR • Helioskrill • Hellcat • Helljumper • Hermes • Hunter • Icarus • Indomitable • Infiltrator • Interceptor • Intruder • Jumpmaster • Legionnaire • Locus • Mako • Marauder • Mark IV • Mark V (Alpha and Delta) • Mark VI (GEN1 and GEN2) • Maverick • Military Police • Nightfall • NOBLE • Nomad • Olive • Operator (GEN1 and GEN2) • Orbital • Pathfinder • Pioneer • Pilot • Protector • Raider • Raijin • Ranger • Reaper • Recluse • Recon (GEN1 and GEN2) • Recruit • Rogue • Scanner • Scout • Security (GEN1 and GEN2) • Seeker • Shinobi • Soldier • Stalker • Stinger • Strider • Teishin • Technician • Timmy • Tracer • Tracker • Valkyrie • Vector • Venator • Venture • Vigilant • Viper • Void Dancer • Warrior • War Master • Wetwork • Wrath
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List of armor permutations in Halo Infinite
Spartan armor
Mark VII Achilles • Agitator • Anubis • Armet • Argus • Aviator • Barrister • Brawler • Camazotz • Cavallino • Celox • Cestus • Champion • Cohort • Copperhead • Courier • Deadeye • Dirgesinger • Dokkaebi • Dominar • Eclipse • Emissary • Enigma • Firefall • Fire Serpent • Flanker • FOTUS• Hawker • Hayabusa • Helioskrill • Helljumper • Helsinger • Hermes • Hunter • ISR • Kai-125 • Linebreaker • Magister • Mark V Zeta • Mark VI • Mark VI MOD • Mark VII • Mark VII [H] • Menachite • Mercury • Prefect • Raider • Rampart • Renegade • Riz-028 • Rockeye • Scanner • SECOPS • Security GEN1 • Security GEN3 • Shinobi • Soldier • Sovereign • Spartanstein • Stormfall • Talon • Thremaleon • Trailblazer • Trendlock • Tribune • Trooper • Torchbearer • Tormenter • Vannak-134 • Venator • Vindicator • Volant • War Master • Warmonger • Wetwork • Winterknight • XM55 AICH • Zvezda
Mark V [B] Air Assault • Commando • CQB • CQC • EOD • EOD GEN1 • EVA • EVA GEN1 • Grenadier • GUNGNIR • HAZOP • JFO • Liberator • Mark V • Mark V [B] • Mark VI • Military Police • ODST • ODST Hardshell • Operator • Pilot • Recon • Rogue • Scarred Comet • Scout • Scout GEN1 • Security
Rakshasa AKIS II-GRD • Artaius • Assailer • Bunyip • Cambion • Conqueror • Cutthroat • Direwolf • Echo Nine • Firbolg • Lechuza • Locus • Morrigan • Negotiator • Rakshasa • Rasetsu • Scorn • Shikari • Stribog • Taskmaster • Ullr • Viper
Mirage IIC Athlon • Balor • Belus • Bruma • Erinyes • Extender • Hermes IIC • Inciter • Infractor • Mirage IIC • Neith • Nexus • Orion IIC • Responder • Savage • Skymarcher • Squire • Street Viper • Tyro • Veles • Whisper
HAZMAT Ashmaw • Burrowlens • Exo • Farkas • Gourdian Knight • Mark VI CBRN • Notus • Oberon • OSTEO • Ogun • Project CORSAC • Serket • Skarbnik • Steelheart • Temfor • Voidspear
Mark IV Ardent • Emil • Heartguard • Hellcat • Isidor • Lancer • Mark IV • Orcus • Paladin • Theodor • Ulrich • Valiant • Wilhelm • Xantippe • Ypsilon • Zacharias • Ärger • Ökonom
Spartan armor accessories
AAP • FC • FCI • SAP • TAC (Assault) • UA (Collar • Type FJ) • UTIL (HP)
Other
Fractures Spartan armor
Yoroi Azechi • Chonmage • Hakushika • Hikeshi • Ikari • Jingasa • Kabuto • Kawari • Kendo • Otomosho • Yokai
Eaglestrike Boggart • Brodie • Eaglestrike • Kerberos • Lancejack • Leadbelcher • M199X • Sky Marshal
Chimera Abatur • Aristos • Chimera • Deltajock • Flenser • Fomorian • Geist • Grendel • Grimghast • Merrow • Mimir • Peaceweaver • Rectifier • Strigoi • Sundered Star • Thresher • Wendigo
For a complete list, check out our armor category.

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List of armor permutations by generation

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MJOLNIR Powered Assault Armor
Mainline armor generations
Mark I • Mark II • Mark III • GEN1 (Mark IV • Mark V • Black • Mark VI • Mark VII) • GEN2 • GEN3
Armor components
Competing and related projects
ARTAIUS • Buccaneer • COBALT • HAYABUSA • HRUNTING • MELAENO • Mirage • OSTEO • Rakshasa • Orcus • Shinobi • SPI • YGGDRASIL
Armor permutations (by generation)
Supplemental equipment
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GEN2
Mark variants
Mark IV (GEN2) • Mark V (GEN2 • Alpha • Delta) • Mark VI (GEN1 • GEN2 • MOD) • Mark VII (GEN2)
Variants originating from GEN1
Air Assault • Argus • Commando • Centurion • EOD • EVA • GUNGNIR • HAZOP • ODST • Operator • Orbital • Raider • Ranger • Recon • Rogue • Scout • Security • Strider • Venator
Variants based on GEN1
New variants
Achilles • Anubis • Argonaut • Athlon • Atlas • Aviator • Barvo • Breaker • Challenger • Cinder • CIO • Copperhead • Cyclops • Cypher • Deadeye • Decimator • Defender • Dynast • Enforcer • Engineer • Fenrir • Foehammer • FOTUS • Freebooter • Goblin • Helioskrill • Hellcat • Helljumper • Hermes • Hunter • Icarus • Infiltrator • Interceptor • Jumpmaster • KEYSTONE • Legionnaire • Locus • Mako • Marauder • Maverick • Mirmillion • Nightfall • Nomad • Oceanic • Oppressor • Pathfinder • Pioneer • Prefect • Protector • Raijin • Reaper • Recluse • Recruit • Ricochet • Scanner • Seeker • Soldier • Stalker • Stinger • Teishin • Technician • Tracer • Tracker • Valkyrie • Vanguard • Vector • Venture • Viper • Void Dancer • Warrior • War Master • Wetwork
Forearms/Legs
Other
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GEN3
Mark variants
Mark V (Zeta) • Mark VI (GEN3 • MOD) • Mark VII (GEN3)
Variants based on GEN1
Variants based on GEN2
New variants
For a complete list, check out our MJOLNIR armor category.
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