All-Black

All-Black the Necrosword was the first symbiote created by Knull. After beheading a Celestial, the dark god continued forging the blade inside the decapitated skull—which would later become Knowhere. The primordial flames and thunderous hammer-blows imprinted upon her deepest memory, birthing the inherent fear of fire and sound wave that would plague all symbiotes for eons.