Kelbor-Hal

Kelbor-Hal — Fabricator General of Mars, the political and spiritual head of the Mechanicum and of the Cult Mechanicus at the end of the Great Crusade. He swore allegiance to Horus in exchange for the lifting of the Imperial bans on forbidden research, becoming the first leader of the “Dark Mechanicum”. He unleashed the Schism of Mars — a civil war on the Red Planet, from which his Dark Mechanicum emerged victorious, after which Mars was blockaded by the Imperial Fists.