The Culexus Assassin is the most unsettling of the Officio Assassinorum's killers, a pariah born without a soul, a void in the warp that every psyker and daemon can feel as a wound in reality. Where others recoil from these blank, emotionless figures, the Officio harnesses them, forging soulless anti-psykers into weapons against the Imperium's most powerful foes.
To stand near a Culexus is to feel dread with no source, a creeping wrongness that gnaws at the mind. Their very presence chokes psychic power, snuffing out sorcery and severing daemons from the warp. Sheathed in the Etherium, a device that amplifies their soulless nature into raw terror, they wield the animus speculum, a weapon that turns the psychic energy of their enemies into searing bolts of annihilation.
Deployed through the same secretive apparatus that fields the Imperium's other Imperial Agents, the Culexus is reserved for the gravest threats: rogue psykers, witch-covens and the daemon-touched, foes no ordinary killer could ever hope to slay.