- "The flow of slaves to the Dark Lands of the Chaos Dwarfs feeds two great needs; the sprawling mine pits and the bloody hunger of the Bull Centaurs. Only by force of arms do we stop these plagues from draining our kingdom dry."
- —Gerlach Wurnst, Captain of Arms in the Border Princedoms[2a]
Bull Centaurs or Bull Centaur Renders as they are sometimes called are, as their name suggests, twisted amalgams of Chaos Dwarf and ferocious bull in aspect, the unnatural fusion creating hulking, monstrous beasts far larger than either and filled with cannibalistic appetites. Many centuries ago, during the Time of Chaos, a fraction of those that survived the onslaught became horrifically mutated, their stubborn Dwarf resistance to the warping taint was overwhelmed utterly by the awful energies to which they were subjected, and so the first Bull Centaurs were born. They came to serve their wider kin as shock troops and temple guardians, and to them was entrusted the protection of the sacred fanes of Hashut, as they more than any other had been twisted into the closest semblance of the Father of Darkness' image.[1a]
Into each successive generation of Chaos Dwarfs a handful of new 'blessed' kin has been born - usually to the death of their unfortunate dams, and such children are given over immediately to the Sorcerers to serve in turn. This number however has not proven enough, and Hashut's inventive priesthood have wielded their dark arts to make more, tampering with their offspring using horrific magic, and even fusiing them into frameworks of metal and Daemon-tainted flesh to swell the ranks of their temple guardians. As well as serving as temple guardians, the Bull Centaurs are also entrusted with dangerous tasks by their masters who trust them implicitly. They are hulking, savage creatures whose strength and endurance far exceeds that of a Chaos Dwarf, and thanks to their strange forms, they are far swifter in battle.[1a]
As they age, their flesh hardens and distorts almost to the consistency of a living metal, and rather than heal naturally from injuries, they must instead rely upon their Sorcerer-masters to repair their wounds with poultices of molten mercury, steel sutures and brazen splints. Although as keen-witted and intelligent as their Chaos Dwarf brethren, and utterly devoted to the worship of Hashut, their Father of Darkness, they are even swifter to anger, and are often otherwise preoccupied with a great hunger for flesh. A good number of the slave-sacrifices bound for Hashut's temples will actually be rent apart, limb-from-limb at the Bull Centaurs' holy feasts, as while slave meat is a common fare for the Chaos Dwarfs, the Bull Centaurs prefer their meals both alive and screaming.[1a]