Kelbor-Hal

Kelbor-Hal was the formal Fabricator General of Mars, the leader of the Adeptus Mechanicus and Majos Mechanicus (spiritual leader) of the Cult of the Machine God during the Great Crusade and the Horus Heresy.

He joined forces with Horus and assisted the renegades with all of the technology available to mankind. He oversaw the construction of the Furious Abyss in the shipyards around Jupiter for the Word Bearers, after which it was used to attempt to destroy the Ultramarines chapter and homeworld, Macragge.