Hellebron

Crone Hellebron is the leader of the Cult of Khaine and ruler of Har Ganeth. She is the second oldest Hag Queen after Morathi, her archnemesis. Unlike Morathi, who has access to the first and true Cauldron of Blood, she is not completely rejuvenated by her own. Every passing year Hellebron requires more sacrifices to fill it, but every year the Cauldron's effects last less and less. Thus, Hellbron must endure many months as an ugly, old, decrepit crone.

Despite appearances Hellebron remains immensely powerful. She alone is the greatest of the Hag Queens, her mastery of the many ways of murder is without equal. As Blood Queen of Har Ganeth she may call upon legions of Witch Elves, Executioners, Assassins and other Khainites to do her bidding. The master assassin Shadowblade is at least ostensibly loyal to the old Crone.

Sources

Warhammer Armies: Dark Elves (8th) -- p. 55
Warhammer Armies: Dark Elves (7th) -- p. 66
Warhammer Armies: Dark Elves (6th) -- p. 52