If you are referring to the antagonists from Halo Wars 2 and Halo Infinite :
: Community members often joke about how a single fire or a lack of tools can spiral an entire town into a death loop. The Faction: "The Banished" (Halo) banished
: The Banished are a mercenary splinter group of the Covenant led by the Brute chieftain Atriox. If you are referring to the antagonists from