Armor customization (Halo Infinite)/Mark IV/Helmet

Helmets v • d • e
Helmet	Manufacturer	Lore	Quality	Introduced in	Unlock requirements
Ardent	UNSC	As the crew of the Spirit of Fire discovered, a combination of Ark-forged components and traditional UNSC minifacturing can create highly effective combat gear, including the "home grown" ARDENT.	Legendary	Spirit of Fire	Purchase either: "Ardent" for 1,800 "Omega Team" for 3,800
Ärger	Materials Group	Created to consolidate thousands of design improvements added to Mark IV MJOLNIR technology over three decades of service, the Mk. IV/Ä introduced many technologies and features which informed the Mark V and Mark VI helmets.	Epic	Spirit of Fire	Reach Spirit of Fire operation pass level 20
Isidor	Materials Group	The Mk. IV/I design originated with technical schematics crafted by the prodigal Spartan-II combat engineers of Yellow Team. It improved on the baseline Mark IV specifications in every way, though resource shortages limited the number produced.	Epic	Spirit of Fire	Purchase the "Isidor" bundle from the Shop for 2,000
Mark IV	Materials Group	The Halsey-refit Mark IV helmets are masterpieces of military engineering. Each is a refurbished Covenant War-era relic, stripped down and packed with the latest Mjolnir technology.	Common	Spirit of Fire	Unlocked by default as of Content Update 29.
Paladin	Watershed Division	The PALADIN is one of Dr. Halsey's side projects that revisits her original Mjolnir work, but it benefits from a clear focus on improving Spartan combat effectiveness and integration of GEN3 Mjolnir technologies.	Legendary	Spirit of Fire	Purchase either: "Paladin" for 1,800 "Omega Team" for 3,800
Ulrich	Materials Group	MJOLNIR Mk. IV/U variants were among the first to feature programmable datacores dedicated to supporting modular equipment packages.	Epic	Spirit of Fire	Purchase the "Ulrich" bundle from the Shop for 1,800
Valiant	Emerson Tactical Systems	Each VALIANT helmet is an expression of Emerson's power, prestige, and premium manufacturing techniques.	Legendary	Spirit of Fire	Purchase either: "Valiant" for 1,800 "Omega Team" for 3,800
Wilhelm	Materials Group	Built at the legendary Damascus Materials Testing Facility, the Mk. IV/W was the result of a still-classified challenge given to Materials Group designers by Dr. Catherine Halsey, architect of Project: MJOLNIR.	Epic	Spirit of Fire	Purchase the "Wilhelm" bundle from the Shop for 1,800
Ypsilon	Materials Group	Each Mk. IV/Y helmet is fitted with a low-profile VISR prototype; some of which would later be recommended for integration with Mark V and Mark VI helmets after extensive field testing and feedback from Spartans.	Epic	Spirit of Fire	Purchase the "Ypsilon" bundle from the Shop for 1,800
Zacharias	Materials Group	Mk. IV/Z suits were field tested by the first Headhunter deep strike teams, proving the deployment concept which would prove highly effective during the Covenant War.	Epic	Spirit of Fire	Purchase the "Zacharias" bundle from the Shop for 1,600
Emil	Materials Group	Hardened to withstand an extended range of environmental conditions, the Mk. IV/E was the prototype for all hazardous environment Mjolnir variants which appeared later.	Epic	The Yappening II	Purchase the "Emil" bundle from the Shop for 1,600
Theodor	Materials Group	The MJOLNIR Mk. IV/T variant was developed at the Seongnam Special Warfare Centre, where it inspired many follow-on armor systems.	Epic	The Yappening II	Purchase the "Theodor" bundle from the Shop for 2,000
Hellcat	Watershed Division	HELLCAT helmets are an amalgamation of recovered ancient craftsmanship and breakthroughs in materials engineering procured with Project ARC DREAM. Though derived from non-Forerunner technology, the helmets and their black-box neural interfaces have proven to be remarkably compatible with Spartan physiology.	Legendary	Frontlines	Either: Reach Frontlines operation pass level 50 (Premium) Purchase the "Hellcat" bundle from the Shop for 2,200
Orcus	Cascade Stronghold Technologies	The ORCUS exoskeleton program remains in development limbo due to ODST prioritization of tactical initiatives, but several of its subassemblies have found a new purpose among Spartans as drop-in upgrade packages for older Mjolnir ensembles.	Legendary	Frontlines	Either: Reach Frontlines operation pass level 14 (Premium) Purchase the "ODST Orcus" bundle from the Shop for 2,000
Xantippe	Materials Group	The Mk. IV/X variant was created to meet rigorous MJOLNIR cost reduction guidelines proposed by UNSC HighCom in 2524. However, implementation of a less-capable powered assault armor was sabotaged by Dr. Halsey, and the final design ended up meeting her exacting specifications.	Epic	Legacy	Purchase the "Wintergeist"/"Xantippe" bundle for either: 1,800 (Wintergeist) 1,600 (Xantippe)
Hearthguard	Beweglichkeitsrüstungsysteme	No esoteric technologies were used for the HEARTHGUARD armor, just solid engineering and decades of experience building armor for front-line Spartan warriors.	Epic	Warpath	Purchase either: "Hearthguard" for 2,000 "Ancestral Inspiration" for 3,000
Lancer	Materials Group	The results of ANVIL research efforts continue to be a fertile source of new Mjolnir designs.	Legendary	Warpath	Either: Reach Warpath operation pass level 20 Purchase from The Exchange for 10,000
Deimos	Fractures	In the Covenant's catechisms of fear, humanity's champion was a wrathful 'Demon.' And now, a demon wearing DEIMOS will be the instrument of their absolution.	Legendary	Infinite	Purchase either: "Fiendbane" for 2,200 "Defiant" for 3,200
Phoenix	Meyer e.V.	A collection of technicians, visionaries, artists, and engineering iconoclasts, Meyer e.V. builds what it wants, when it wants, to its own specifications. PHOENIX is both an artistic expression and a bold vision of their holistic approach to warfighting technology.	Epic	Infinite	Reach Infinite operation pass level 75 (Premium)