The history of the Mag’har is rooted in an alternate past. In this timeline, the bronze dragon Kairozdormu helped Garrosh Hellscream travel back to a Draenor that had not yet fallen to the Burning Legion. Garrosh stopped his father, Grommash Hellscream, from drinking the demon blood and instead united the independent orc clans into a technologically advanced, industrial army known as the Iron Horde.

After the Iron Horde was defeated by surface champions and the Legion was thrown down, the orcs lived in peace on Draenor for decades, uniting under the name Mag'har. However, the native Draenei—driven by a fanatical devotion to the Light—began a violent, forceful crusade to convert or purge the orcs. Facing total extinction, the Mag’har used a shard of the Vision of Time to escape their dying world, crossing over into Azeroth to pledge their undying loyalty to the Horde that saved them.

Named in honor of the great Hellscream bloodline, Grom'gar is the fortified capital of the Mag'har Orcs on Azeroth. Nestled safely within the rugged, sun-baked canyons of Durotar, this imposing fortress combines the raw, black-iron technology of the Iron Horde with traditional, spike-laden orcish longhouses, standing as a defiant monument to an uncorrupted lineage.

Because the alternate Draenor is completely sealed off to them, Grom'gar serves as their primary military outpost and cultural sanctuary on Azeroth. The base functions as a direct command center housing their clan banners, heavy siege engines, and active portal networks that hook directly into the main upper tiers of Orgrimmar.