Zephro Carnelian: The enigmatic Harlequin Man. A human psyker from the planet Hurrah, Zephro's world was isolated by a warp-storm, and slowly fell to the worship of Slaanesh. Rescued from a daemonic invasion of his homeworld by eldar from Ulthwe, Carnelian became an eldar agent of sorts, and was one of the instigators of the Hydra Conspiracy.
Carnelian also has an unusual power, in that he can enter the Emperor's Tarot cards of Inquisitor Draco - a suprising feat, since the cards are supposed to be connected directly to The Emperor himself.
Source: Draco by Ian Watson, Harlequin by Ian Watson, Chaos Child by Ian Watson
Submitter: Simguinus and IBBoard