Guardians are Forerunner AI constructs created to enforce Forerunner laws on troublesome worlds and keep them in line. In Halo 5: Guardians, Cortana awakens a number of them to assist her in her goal of claiming the Mantle of Responsability for the Created.



The Guardians were originally created by the Forerunners to oversee worlds they deemed troublesome. The Forerunners also attempted to use the Guardians against The Flood, but only proved to be ineffective against the parasite. The Forerunners later hid the Guardians on numerous planets throughout the galaxy.

Halo 5: Guardians

The Guardians were later awakened by Cortana to enforce the AIs' claim to the Mantle of Responsibility. Guardians soon activated on many human colonies, causing innumerable amounts of damage.

After their activation all of the Guardians moved to the planet Genesis, where from they were deployed to their designates systems. At least some of Guardians used their EMPs to disable any opposition upon arriving in their systems.

Halo Wars 2

When Professor Anders of the Spirit of Fire's crew commandeered a newly built Halo Installation in order to return to civilization, she is intercepted by a Guardian which forces the Halo out of slipspace

Halo 6

The Guardians will presumably return in Halo 6 as major antagonists.

           Halo Villains

The Flood | Huragok | Mgalekgolo | Jiralhanae | Kig-Yar | Sangheili | San Shyuum | Unggoy

Covenant Empire
Covenant High Council: Prophet of Truth | Prophet of Mercy | Prophet of Regret
Covenant Sangheili: Ardo 'Moretumee | Bako 'Ikaporamee | Field Marshal | Harka | Lat 'Ravamee | Luro 'Taralumee | Merg Vol | Ontomee | Re'gish Wamik | Rho 'Barutamee | Ripa 'Moramee | Rtas Vadum | Thel 'Vadam
Covenant Jiralhanae: Lepidus | Parabum | Tartarus

Storm Covenant
The Didact | Jul Mdama | Gek 'Lhar | Parg Vol | Kitun 'Arach

Cortana | Warden Eternal | Guardians | Prometheans

The Banished
Atriox | Decimus | Let 'Volir

Office of Naval Intelligence
Jameson Locke | James Ackerson

Jerald Mulkey Ander | Robert Watts

343 Guilty Spark | Commissioner Kinsler | Gravemind | Heretics (Sesa Refumee)