Encyclopedia Barsoomia Wiki
The information in this article comes from Warlord of Mars: Dejah Thoris and is not written by Edgar Rice Burroughs.

The Great Horde of the North was a Green Horde on Barsoom roughly 437 years before the arrival of John Carter on the world. It was led by Kreshid Var, the horde attacked Lesser Helium after Senneth Dor the Jeddak of Yorn betrayed Lesser and Greater Helium and put himself into a vulnerable position. Senneth Dor fused with the Colossus however and defeated the horde, and seemingly destroying it as a whole.