Captain Paran described him as a huge warrior, "bestial, bedecked in the withered, hair-matted skins of deboned human heads [… wearing a] hauberk of overlapping coins". He used a spiked mace as his weapon of choice and also a symbol of his rank.
Cafal claimed his father could crush a man's chest with his embrace, wield hook-swords in both hands, and slay ten warriors in seconds. He also said his father was most feared for his intelligence, which had been inherited by Hetan.
Humbrall Taur sought to unite the White Face clans under his leadership. He sent his children, Hetan, Cafal, and Netok, to Capustan to demand the return of the bones of their ancestors. The barrows of the Founding Families, whose spirits were now worshipped by the Barghast, had been destroyed by the city's founders. Whoever freed the mortal remains of the Barghast spirit-gods could potentially unite the fractious clans under one rule. Facing certain extinction at the hands of the Pannion Domin, the Mask Council finally relented.
His death led to the installation of his son-in-law, Onos T'oolan, as head of the White Face Barghast.