Arbaal

Most favoured of all of Khorne's many followers is the warlord Arbaal the Undefeated. Countless thousands have fallen beneath his bloodthirsty axe and their skulls pile at the base of the Blood God's mighty throne. A relentless fury of destruction and blood-letting descends on Arbaal whenever he wades through his foes in battle- no one has ever been able to withstand his attacks. He is ever aware of the eyes of Khorne upon him, knowing that should he one day fail in battle, the terrible wrath of his patron deity shall descend upon him. Thus is the punishment for failure.

(6th Edition, Hordes of Chaos)