The Head Crushaz were an Ork klan led by Warboss Gorgutz until the their defeat on Kronus, which led to their extinction. These Orks had originated on Lorn V before the Dark Crusade. It is common for Ork klanz to become part of other Ork tribes if their Warboss is killed by another Ork leader. Warlord Gorgutz used this method to quickly build a massive Ork invasion on three separate occasions; first on Lorn V, then Kronus and finally a massive assault was launched by these Greenskins upon the Kaurava System. However this also led to an easily fractured alliance amongst the tribes.