At some point early into his crusade against the Light brought into the universe by the Celestials, Knull learned he could manifest massive wyvern-like monsters out of the living abyss he commanded. Powerful enough to kill most gods, these symbiote dragons were used as everything from mounts to weapons of mass destruction capable of annihilating entire civilizations; their constituent living abyss could be used to smother entire planets or infect gods and mortals alike, turning them into soldiers for Knull's army.
